Advanced XML Advanced XML with PHP 5 with PHP 5 March 14, 2007 - - PowerPoint PPT Presentation
Advanced XML Advanced XML with PHP 5 with PHP 5 March 14, 2007 March 14, 2007 Robert Richards Robert Richards rrichards@ctindustries.net rrichards@ctindustries.net http://www.cdatazone.org/talks/quebec_2007/workshop.zip
http://www.cdatazone.org/talks/quebec_2007/workshop.zip http://www.cdatazone.org/talks/quebec_2007/workshop.zip
Introduction to Terms and Concepts
Introduction to Terms and Concepts
Libxml
Libxml
SimpleXML
SimpleXML
SDO
SDO
DOM
DOM
XMLReader
XMLReader
XMLWriter
XMLWriter
XSL
XSL
An XML Namespace is a collection of names
An XML Namespace is a collection of names identified by a URI. identified by a URI.
They are applicable to elements and attributes.
They are applicable to elements and attributes.
Namespaces may or may not be associated with a
Namespaces may or may not be associated with a prefix. prefix.
xmlns:rob="urn:rob"
xmlns:rob="urn:rob"
xmlns=
xmlns=http://www.example.com/rob http://www.example.com/rob
Attributes never reside within a default namespace.
Attributes never reside within a default namespace.
It is illegal to have two attributes with the same
It is illegal to have two attributes with the same localname and same namespace on the same element. localname and same namespace on the same element.
<order num="1001"> <shipping> <name type="care_of">John Smith</name> <address>123 Here</address> </shipping> <billing> <name type="legal">Jane Doe</name> <address>456 Somewhere else</address> </billing> </order>
<order num="1001" xmlns="urn:order" xmlns:ship="urn:shipping" xmlns:bill="urn:billing"> <ship:shipping> <ship:name type="care_of">John Smith</ship:name> <ship:address>123 Here</ship:address> </ship:shipping> <bill:billing> <bill:name type="legal">Jane Doe</bill:name> <bill:address>456 Somewhere else</bill:address> </bill:billing> </order>
<order num="1001" xmlns="urn:order" <order num="1001" xmlns="urn:order" xmlns:order="urn:order" xmlns:order="urn:order" xmlns:ship="urn:order" xmlns:ship="urn:order"> > <shipping ship:type="fed_ex" type="fed_ex"> <shipping ship:type="fed_ex" type="fed_ex"> <name <name ship:type="care_of" ship:type="care_of"
>John Smith</ship:name> </ship:shipping> </ship:shipping> </order> </order>
Both "type" attributes are bound to same namespace which is not valid!
<order num="1001" xmlns="urn:order" <order num="1001" xmlns="urn:order" xmlns:order="urn:order" xmlns:order="urn:order" xmlns:ship="urn:order"> xmlns:ship="urn:order"> <shipping <shipping ship:type="fed_ex" type="fed_ex" ship:type="fed_ex" type="fed_ex"> > <name ship:type="care_of" <name ship:type="care_of"
</ship:shipping> </ship:shipping> </order> </order> <!-- attributes on shipping element are valid ! --> <!-- attributes on shipping element are valid ! -->
The prefix
The prefix
Prefixes should also not begin with the
Validation insures an XML document
Multiple mechanisms exist to write document
Document Type Definition (DTD)
Document Type Definition (DTD)
XML Schema
XML Schema
RelaxNG
RelaxNG
validation/courses-dtd.xml validation/courses-dtd.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE courses [ <!ELEMENT courses (course+)> <!ELEMENT course (title, description, credits, lastmodified)> <!ATTLIST course cid ID #REQUIRED> <!ELEMENT title (#PCDATA)> <!ELEMENT description (#PCDATA)> <!ELEMENT credits (#PCDATA)> <!ELEMENT lastmodified (#PCDATA)> ]>
<courses> <course cid="c1"> <title>Basic Languages</title> <description>Introduction to Languages</description> <credits>1.5</credits> <lastmodified>2004-09-01T11:13:01</lastmodified> </course> </courses>
validation/course-id.xml validation/course-id.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE courses [ <!ATTLIST course cid ID #REQUIRED> ]> <courses> <course cid="c1"> <title xml:id="t1">Basic Languages</title> <description>Introduction to Languages</description> </course> <course cid="c2"> <title xml:id="t3">French I</title> <description>Introduction to French</description> </course> </courses>
validation/course.xsd validation/course.xsd
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <xsd:element name="courses"> <xsd:complexType> <xsd:sequence> <xsd:element name="course" minOccurs="1" maxOccurs="unbounded"> <xsd:complexType> <xsd:sequence> <xsd:element name="title" type="xsd:string"/> <xsd:element name="description" type="xsd:string"/> <xsd:element name="credits" type="xsd:decimal"/> <xsd:element name="lastmodified" type="xsd:dateTime"/> </xsd:sequence> <xsd:attribute name="cid" type="xsd:ID"/> </xsd:complexType> </xsd:element> </xsd:sequence> </xsd:complexType> </xsd:element> </xsd:schema>
validation/course.rng validation/course.rng
<grammar xmlns="http://relaxng.org/ns/structure/1.0" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes"> <start> <element name="courses"> <oneOrMore> <element name="course"> <attribute name="cid"><data type="ID"/></attribute> <element name="title"><text/></element> <element name="description"><text/></element> <element name="credits"><data type="decimal"/></element> <element name="lastmodified"><data type="dateTime"/></element> </element> </oneOrMore> </element> </start> </grammar>
Language to locate and retrieve information
A foundation for XSLT
An XML document is a tree containing nodes
The XML document is the root node
Locations are addressable similar to the syntax
xpath/courses.xml xpath/courses.xml
<courses xmlns:t="http://www.example.com/title">
<course xml:id="c2"> <t:title>French I</t:title> <description>Introduction to French</description> </course> <course xml:id="c3"> <t:title>French II</t:title> <description>Intermediate French</description> <pre-requisite cref="c2" /> <defns xmlns="urn::default">content</defns> </course>
</courses>
xpath/location.php xpath/location.php /courses/course/description /courses/*/description //description //description[ancestor::course]
<description>Introduction to French</description> <description>Intermediate French</description>
xpath/function.php xpath/function.php
string(/courses/course/pre-requisite[@cref="c2"]/..) string(/courses/course/pre-requisite[@cref="c2"]/..)
French II French II Intermediate French Intermediate French content content
Reference: Reference:
<courses xmlns:t="http://www.example.com/title"> <courses xmlns:t="http://www.example.com/title"> <course xml:id="c3"> <course xml:id="c3"> <!-- additional elements containing the textual content ommitted for brevity --> <!-- additional elements containing the textual content ommitted for brevity --> <pre-requisite cref="c2" /> <pre-requisite cref="c2" /> </course> </course> </courses> </courses>
xpath/namespaces.php xpath/namespaces.php //title Empty NodeSet //defns Empty NodeSet
<defns xmlns="urn:default">content</defns>
//t:title
<t:title>French I</t:title> <t:title>French II</t:title>
//*[local-name()="defns"]
<courses xmlns:t="http://www.example.com/title">
<course xml:id="c2"> <t:title>French I</t:title> </course> <course xml:id="c3"> <t:title>French II</t:title> <defns xmlns="urn::default">content</defns> </course>
</courses>
Reference:
PHP 5 introduced numerous interfaces for
The libxml2 library (http://www.xmlsoft.org/)
The sister library libxslt provides XSLT support
I/O is handled via PHP streams
ext/domxml was removed in favor of ext/dom
ext/libxml
ext/libxml
ext/xml (SAX push parser)
ext/xml (SAX push parser)
ext/dom
ext/dom
ext/simplexml
ext/simplexml
ext/xmlreader (pull parser)
ext/xmlreader (pull parser)
pecl/sdo (SCA_SDO)
pecl/sdo (SCA_SDO)
ext/xmlwriter
ext/xmlwriter
ext/xsl
ext/xsl
ext/wddx
ext/wddx
ext/soap
ext/soap
Contains common functionality shared across
Defines constants to modify parse time
Provides access to streams context.
Allows modification of error handling
Disable network access when loading
LIBXML_NONET
Merge CDATA nodes in Text nodes
LIBXML_NOCDATA
Perform XIncludes during parsing
LIBXML_XINCLUDE
Remove insignificant whitespace on parsing
LIBXML_NOBLANKS
Suppress parser warnings from libxml2
LIBXML_NOWARNING
Suppress parsing errors from libxml2
LIBXML_NOERROR
Loads subsets and perform validation
LIBXML_DTDVALID
Create defaulted attributes defined in DTD
LIBXML_DTDATTR
Load subsets but do not perform validation
LIBXML_DTDLOAD
Substitute entities with replacement content
LIBXML_NOENT
bool libxml_use_internal_errors ([bool use_errors]) bool libxml_use_internal_errors ([bool use_errors]) void libxml_clear_errors ( void ) void libxml_clear_errors ( void ) LibXMLError libxml_get_last_error ( void ) LibXMLError libxml_get_last_error ( void ) array libxml_get_errors ( void ) array libxml_get_errors ( void )
Class: LibXMLError
Properties (Read-Only): (int) level (int) code (int) column (string) message (string) file (int) line
LibXMLError::code Values:
LIBXML_ERR_NONE LIBXML_ERR_WARNING LIBXML_ERR_ERROR LIBXML_ERR_FATAL
libxml/error.php libxml/error.php
<?php /* Regular Error Handling */ $dom = new DOMDocument(); $dom->loadXML('<root>'); /* New Error Handling */ libxml_use_internal_errors(TRUE); if (! $dom->loadXML('root')) { $arrError = libxml_get_errors(); foreach ($arrError AS $xmlError) { var_dump($xmlError); } } else { print "Document Loaded"; } ?>
PHP Warning: DOMDocument::loadXML(): Premature end of data in tag root line 1 PHP Warning: DOMDocument::loadXML(): Premature end of data in tag root line 1 in Entity, line: 1 in /home/rrichards/workshop/libxml/error.php on line 4 in Entity, line: 1 in /home/rrichards/workshop/libxml/error.php on line 4 Warning: DOMDocument::loadXML(): Premature end of data in tag root line 1 in Warning: DOMDocument::loadXML(): Premature end of data in tag root line 1 in Entity, line: 1 in /home/rrichards/workshop/libxml/error.php on line 4 Entity, line: 1 in /home/rrichards/workshop/libxml/error.php on line 4
New Error Handling: New Error Handling:
["level"]=> int(3) ["level"]=> int(3) ["code"]=> int(4) ["code"]=> int(4) ["column"]=> int(1) ["column"]=> int(1) ["message"]=> string(34) "Start tag expected, '<' not found" ["message"]=> string(34) "Start tag expected, '<' not found" ["file"]=> string(0) "" ["file"]=> string(0) "" ["line"]=> int(1) ["line"]=> int(1) } }
$opts = array( $opts = array( 'http' => array( 'http' => array( 'user_agent' => 'PHP libxml2 agent', 'user_agent' => 'PHP libxml2 agent', 'proxy' => 'tcp://localhost:8082', 'proxy' => 'tcp://localhost:8082', 'request_fulluri' => TRUE 'request_fulluri' => TRUE ) ) ); ); $context = stream_context_create($opts); $context = stream_context_create($opts); libxml_set_streams_context($context); libxml_set_streams_context($context); $doc = DOMDocument::load('http://www.example.org/file.xml'); $doc = DOMDocument::load('http://www.example.org/file.xml');
XML extensions are unicode ready for PHP 6
Both the UTF-8 binary strings (existing behavior)
Both the UTF-8 binary strings (existing behavior) AND AND unicode strings. unicode strings.
With Unicode enabled, unicode strings are returned
With Unicode enabled, unicode strings are returned instead of the current UTF-8 binary strings. instead of the current UTF-8 binary strings.
Binary strings are required for Loading and
Insures original encoding is not lost
Insures original encoding is not lost
Does not affect usage with unicode disabled
Does not affect usage with unicode disabled
$xml = $xml = (binary) (binary)"<root>My Document</root>"; "<root>My Document</root>"; $sxe = simplexml_load_string($xml); $sxe = simplexml_load_string($xml); $xml = $xml = b b'<root>MyDocument</root>'; '<root>MyDocument</root>'; $dom = new DOMDocument(); $dom = new DOMDocument(); $dom->loadXML($xml); $dom->loadXML($xml); $sxe = simplexml_load_string($dom->saveXML()); $sxe = simplexml_load_string($dom->saveXML());
Provides simple access to XML documents
Provides simple access to XML documents
Operates only on elements and attributes
Operates only on elements and attributes
Contains XPath support
Contains XPath support
Allows for modifications to the XML
Allows for modifications to the XML
Zero copy interoperability with DOM
Zero copy interoperability with DOM
Examples for PHP 5.1.6+
Examples for PHP 5.1.6+
New in PHP 5.1.3
New in PHP 5.1.3
Elements and attributes can be added using addChild() and
Elements and attributes can be added using addChild() and addAttribute() methods. addAttribute() methods.
Node names can be retrieved by calling getName().
Node names can be retrieved by calling getName().
simplexml/yahoo_websearch_results.xml simplexml/yahoo_websearch_results.xml
<ResultSet <ResultSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
totalResultsReturned totalResultsReturned="3" firstResultPosition="1"> ="3" firstResultPosition="1"> < <Result Result> > < <Title Title>Zend Technologies - PHP 5 . . .</Title> >Zend Technologies - PHP 5 . . .</Title> <Summary>titletext = $dom-&gt;createText. . .</Summary> <Summary>titletext = $dom-&gt;createText. . .</Summary> < <Url Url>http://www.zend.com/php5/articles/php5-x. . .</Url> >http://www.zend.com/php5/articles/php5-x. . .</Url> <ClickUrl>http://uk.wrs.yahoo.com/_ylt=...</ClickUrl> <ClickUrl>http://uk.wrs.yahoo.com/_ylt=...</ClickUrl> <DisplayUrl>www.zend.com/php5/articles/php. . .</DisplayUrl> <DisplayUrl>www.zend.com/php5/articles/php. . .</DisplayUrl> < <ModificationDate ModificationDate>1171872000</ModificationDate> >1171872000</ModificationDate> <MimeType>text/html</MimeType> <MimeType>text/html</MimeType> <!-- Abbreviated Content --> <!-- Abbreviated Content --> </Result> </Result> <!-- Abbreviated Response --> <!-- Abbreviated Response --> </ResultSet> </ResultSet>
simplexml/yahoo_search.php simplexml/yahoo_search.php
/* URL to Web Search service */ /* URL to Web Search service */
$url = 'http://api.search.yahoo.com/WebSearchService/V1/webSearch'; $url = 'http://api.search.yahoo.com/WebSearchService/V1/webSearch';
/* The query is separate here as the terms must be encoded. */ /* The query is separate here as the terms must be encoded. */
$url .= '?query='.rawurlencode('php5 xml'); $url .= '?query='.rawurlencode('php5 xml');
/* Complete the URL adding App ID, limit to 3 results and only English results */ /* Complete the URL adding App ID, limit to 3 results and only English results */
$url .= "&appid=zzz&results=3&language=en"; $url .= "&appid=zzz&results=3&language=en";
$sxe = simplexml_load_file($url); $sxe = simplexml_load_file($url);
/* Check for number of results returned */ /* Check for number of results returned */ if ((int)$sxe['totalResultsReturned'] > 0) { if ((int)$sxe['totalResultsReturned'] > 0) { /* Loop through results and print title, url and modification date */ /* Loop through results and print title, url and modification date */ foreach ($sxe->Result AS $result) { foreach ($sxe->Result AS $result) { print 'Title: '.$result->Title."\n"; print 'Title: '.$result->Title."\n"; print 'Url: '.$result->Url."\n"; print 'Url: '.$result->Url."\n"; print 'Mod Date: '.date ('M d Y', (int)$result->ModificationDate)."\n\n"; print 'Mod Date: '.date ('M d Y', (int)$result->ModificationDate)."\n\n"; } } } }
RESULTS RESULTS
Title: Zend Technologies - PHP 5 In Depth - XML in PHP 5 - What's New? Title: Zend Technologies - PHP 5 In Depth - XML in PHP 5 - What's New? Url: http://www.zend.com/php5/articles/php5-xmlphp.php Url: http://www.zend.com/php5/articles/php5-xmlphp.php Mod Date: Feb 19 2007 Mod Date: Feb 19 2007 Title: Zend Developer Zone | XML in PHP 5 - What's New? Title: Zend Developer Zone | XML in PHP 5 - What's New? Url: http://devzone.zend.com/node/view/id/1713 Url: http://devzone.zend.com/node/view/id/1713 Mod Date: Feb 26 2007 Mod Date: Feb 26 2007 Title: FreshPorts -- textproc/php5-xml Title: FreshPorts -- textproc/php5-xml Url: http://www.freshports.org/textproc/php5-xml Url: http://www.freshports.org/textproc/php5-xml Mod Date: Feb 15 2007 Mod Date: Feb 15 2007
simplexml/sxe_ns_books.php simplexml/sxe_ns_books.php
<books <books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"
xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book">
> <bk:book qty="25"> <bk:book qty="25"> <bk:name>Grapes of Wrath</bk:name> <bk:name>Grapes of Wrath</bk:name> <bk:price>12.99</bk:price> <bk:price>12.99</bk:price> </bk:book> </bk:book> <book qty="33" xmlns="http://www.example.com/ExteralClassics"> <book qty="33" xmlns="http://www.example.com/ExteralClassics"> <name>To Kill a Mockingbird</name> <name>To Kill a Mockingbird</name> <price>10.99</price> <price>10.99</price> </book> </book> </books> </books>
$books = simplexml_load_file('sxe_ns_books.xml'); $books = simplexml_load_file('sxe_ns_books.xml'); foreach ($books->book AS $book) { foreach ($books->book AS $book) { if ($book-> if ($book->name
name)
) print $book->name; print $book->name;
} }
simplexml/sxe_ns_books_prefix.php simplexml/sxe_ns_books_prefix.php
<books <books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"
xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book">
> <bk:book qty="25"> <bk:book qty="25"> <bk:name>Grapes of Wrath</bk:name> <bk:name>Grapes of Wrath</bk:name> <bk:price>12.99</bk:price> <bk:price>12.99</bk:price> </bk:book> </bk:book> <book qty="33" xmlns="http://www.example.com/ExteralClassics"> <book qty="33" xmlns="http://www.example.com/ExteralClassics"> <name>To Kill a Mockingbird</name> <name>To Kill a Mockingbird</name> <price>10.99</price> <price>10.99</price> </book> </book> </books> </books>
$books = simplexml_load_file('sxe_ns_books.xml'); $books = simplexml_load_file('sxe_ns_books.xml'); $children = $books->children("http://www.example.com/book"); $children = $books->children("http://www.example.com/book"); foreach ($children->book AS $book) { foreach ($children->book AS $book) { print $book->name."\n"; print $book->name."\n"; } }
simplexml/sxe_xpath_ns.php simplexml/sxe_xpath_ns.php
<books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"> <books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"> <bk:book qty="25"> <bk:book qty="25"> <bk:name>Grapes of Wrath</bk:name> <bk:name>Grapes of Wrath</bk:name> <bk:price>12.99</bk:price> <bk:price>12.99</bk:price> </bk:book> </bk:book> <book qty="33" xmlns="http://www.example.com/ExteralClassics" xmlns:pc="urn::pricing"> <book qty="33" xmlns="http://www.example.com/ExteralClassics" xmlns:pc="urn::pricing"> <name>To Kill a Mockingbird</name> <name>To Kill a Mockingbird</name> <pc:price>10.99</pc:price> <pc:price>10.99</pc:price> </book> </book> </books> </books>
$sxe = simplexml_load_file(' $sxe = simplexml_load_file('sxe_ns_books.xml sxe_ns_books.xml'); '); $nodelist = $sxe->xpath("//name"); $nodelist = $sxe->xpath("//name"); print "Book Title: ".$nodelist[0]."\n"; print "Book Title: ".$nodelist[0]."\n"; $nodelist = $sxe->xpath("//bk:name"); $nodelist = $sxe->xpath("//bk:name"); print "Book Title: ".$nodelist[0]."\n"; print "Book Title: ".$nodelist[0]."\n";
simplexml/sxe_xpath_ns_def.php simplexml/sxe_xpath_ns_def.php
<books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"> <books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"> <bk:book qty="25"> <bk:book qty="25"> <bk:name>Grapes of Wrath</bk:name> <bk:name>Grapes of Wrath</bk:name> <bk:price>12.99</bk:price> <bk:price>12.99</bk:price> </bk:book> </bk:book> <book qty="33" xmlns="http://www.example.com/ExteralClassics" xmlns:pc="urn::pricing"> <book qty="33" xmlns="http://www.example.com/ExteralClassics" xmlns:pc="urn::pricing"> <name>To Kill a Mockingbird</name> <name>To Kill a Mockingbird</name> <pc:price>10.99</pc:price> <pc:price>10.99</pc:price> </book> </book> </books> </books>
$sxe = simplexml_load_file(' $sxe = simplexml_load_file('sxe_ns_books.xml sxe_ns_books.xml'); '); $sxe->registerXPathNamespace("ec", " $sxe->registerXPathNamespace("ec", "http://www.example.com/ExteralClassics
http://www.example.com/ExteralClassics");
"); $nodelist = $sxe->xpath("//ec:name"); $nodelist = $sxe->xpath("//ec:name"); print "Book Title: ".$nodelist[0]."\n"; print "Book Title: ".$nodelist[0]."\n";
simplexml/sxe_xpath_context.php simplexml/sxe_xpath_context.php
$xml = <<< EOXML $xml = <<< EOXML <books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"> <books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"> <book qty="33" xmlns="http://www.example.com/ExteralClassics" xmlns:pc="urn::pricing"> <book qty="33" xmlns="http://www.example.com/ExteralClassics" xmlns:pc="urn::pricing"> <name>To Kill a Mockingbird</name> <name>To Kill a Mockingbird</name> <pc:price>10.99</pc:price> <pc:price>10.99</pc:price> </book> </book> </books> </books>
EOXML; EOXML;
libxml_use_internal_errors(TRUE); libxml_use_internal_errors(TRUE); $books = simplexml_load_string($xml); $books = simplexml_load_string($xml); $books->registerXPathNamespace("pc", "urn::pricing"); $books->registerXPathNamespace("pc", "urn::pricing"); $nodelist = $books->xpath("//ec:name"); $nodelist = $books->xpath("//ec:name"); $pricing = $books->book->xpath("./pc:price"); $pricing = $books->book->xpath("./pc:price"); print "Book Price: $".$pricing[0]."\n"; print "Book Price: $".$pricing[0]."\n"; RESULTS RESULTS Book Price: $ Book Price: $
simplexml/sxe_xpath_ns_context.php simplexml/sxe_xpath_ns_context.php
$xml = <<< EOXML $xml = <<< EOXML <books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"> <books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"> <book qty="33" xmlns="http://www.example.com/ExteralClassics" xmlns:pc="urn::pricing"> <book qty="33" xmlns="http://www.example.com/ExteralClassics" xmlns:pc="urn::pricing"> <name>To Kill a Mockingbird</name> <name>To Kill a Mockingbird</name> <pc:price>10.99</pc:price> <pc:price>10.99</pc:price> </book> </book> </books> </books>
EOXML; EOXML;
$books = simplexml_load_string($xml); $books = simplexml_load_string($xml); $book = $books->book[0]; $book = $books->book[0]; /* GOTCHA TO BE AWARE OF*/ /* GOTCHA TO BE AWARE OF*/ $book->registerXPathNamespace("pc", "urn::pricing"); $book->registerXPathNamespace("pc", "urn::pricing"); $pricing = $book->xpath("./pc:price"); $pricing = $book->xpath("./pc:price"); print "Book Price: $".$pricing[0]."\n"; print "Book Price: $".$pricing[0]."\n"; RESULTS RESULTS Book Price: $10.99 Book Price: $10.99
$data = "<root><top><![CDATA[ Some text]]></top></root>"; $data = "<root><top><![CDATA[ Some text]]></top></root>"; /* We can even pass libxml parser options */ /* We can even pass libxml parser options */ $sxe = new SimpleXMLElement($data, LIBXML_NOCDATA); $sxe = new SimpleXMLElement($data, LIBXML_NOCDATA); $sxe->child = 'new child'; $sxe->child = 'new child'; $sxe->child2 = 'second child'; $sxe->child2 = 'second child'; print $sxe->asXML(); print $sxe->asXML(); <?xml version="1.0"?> <?xml version="1.0"?> <root><top> Some text</top><child>new <root><top> Some text</top><child>new child</child><child2>second child</child2></root> child</child><child2>second child</child2></root>
$sxe = new SimpleXMLElement("<root />"); $sxe = new SimpleXMLElement("<root />"); foreach ($sxe->childr AS $child) { foreach ($sxe->childr AS $child) { var_dump($child); var_dump($child); } } print $sxe->asXML(); print $sxe->asXML(); ????? RESULTS ????? ????? RESULTS ????? <?xml version="1.0"?> <?xml version="1.0"?> <root><childr/></root> <root><childr/></root>
simplexml/editing.php simplexml/editing.php
$data = array(array('title'=>'Result 1', 'descript'=>'Res1 description'), $data = array(array('title'=>'Result 1', 'descript'=>'Res1 description'), array('title'=>'Result 2', 'descript'=>'description of Res2'), array('title'=>'Result 2', 'descript'=>'description of Res2'), array('title'=>'Result 3', 'descript'=>'This is result 3')); array('title'=>'Result 3', 'descript'=>'This is result 3'));
class webservice extends simpleXMLElement { class webservice extends simpleXMLElement { public function appendElement($name, $value=NULL) { public function appendElement($name, $value=NULL) {
$count = (isset($this->{$name}))?count($this->{$name}):0; $count = (isset($this->{$name}))?count($this->{$name}):0;
if ($count) { if ($count) {
$this->{$name}[$count] = $value; $this->{$name}[$count] = $value;
} else { } else { /* An issue requires first child be created without offset */ /* An issue requires first child be created without offset */
$this->{$name} = $value; $this->{$name} = $value;
} }
return $this->{$name}[$count]; return $this->{$name}[$count];
} } } }
$rest = simplexml_load_string('<results num="0" />', $rest = simplexml_load_string('<results num="0" />', 'webservice' 'webservice'); ); $rest['num'] = count($data); $rest['num'] = count($data); foreach ($data AS $result_item) { foreach ($data AS $result_item) { $result = $rest->appendElement('result'); $result = $rest->appendElement('result'); $result->appendElement('title', $result_item['title']); $result->appendElement('title', $result_item['title']); $result->appendElement('description', $result_item['descript']); $result->appendElement('description', $result_item['descript']); } } print $rest->asXML(); print $rest->asXML();
<?xml version="1.0"?> <?xml version="1.0"?> <results num="3"> <results num="3"> <result> <result> <title>Result 1</title> <title>Result 1</title> <description>Res1 description</description> <description>Res1 description</description> </result> </result> <result> <result> <title>Result 2</title> <title>Result 2</title> <description>description of Res2</description> <description>description of Res2</description> </result> </result> <result> <result> <title>Result 3</title> <title>Result 3</title> <description>This is result 3</description> <description>This is result 3</description> </result> </result> </results> </results>
simplexml/editing_php513.php simplexml/editing_php513.php $data = array(array('title'=>'Result 1', 'descript'=>'Res1 description'), $data = array(array('title'=>'Result 1', 'descript'=>'Res1 description'), array('title'=>'Result 2', 'descript'=>'description of Res2'), array('title'=>'Result 2', 'descript'=>'description of Res2'), array('title'=>'Result 3', 'descript'=>'This is result 3')); array('title'=>'Result 3', 'descript'=>'This is result 3'));
$rest = simplexml_load_string('<results num="0" />'); $rest = simplexml_load_string('<results num="0" />'); $rest['num'] = count($data); $rest['num'] = count($data); foreach ($data AS $result_item) { foreach ($data AS $result_item) { $result = $rest-> $result = $rest->addChild addChild('result'); ('result'); $result-> $result->addChild addChild('title', $result_item['title']); ('title', $result_item['title']); $result-> $result->addChild addChild('description'); ('description'); $result->description = $result_item['descript']; $result->description = $result_item['descript']; } } print $rest->asXML(); print $rest->asXML();
remove_data.php remove_data.php <?php <?php $results = simplexml_load_file('editing_php513.xml'); $results = simplexml_load_file('editing_php513.xml'); /* Delete title from first result element */ /* Delete title from first result element */ unset($results->result->title); unset($results->result->title); /* Delete the 2nd result element - WORKS in PHP 5.1.3+ */ /* Delete the 2nd result element - WORKS in PHP 5.1.3+ */ unset($results->result[1]); unset($results->result[1]); print $results->asXML(); print $results->asXML(); ?> ?>
RESULTS RESULTS <?xml version="1.0"?> <?xml version="1.0"?> <results num="3"> <results num="3"> <result> <result> <description>Res1 description</description> <description>Res1 description</description> </result> </result> <result> <result> <title>Result 3</title> <title>Result 3</title> <description>This is result 3</description> <description>This is result 3</description> </result> </result> </results> </results>
Provides simple access to XML documents
Provides simple access to XML documents
Works in a similar fashion to SimpleXML
Works in a similar fashion to SimpleXML
Operates only on elements and attributes
Operates only on elements and attributes
Contains XPath support
Contains XPath support
Allows for modifications to the XML
Allows for modifications to the XML
Requires XML Schema
Requires XML Schema
Stricter than SimpleXML
Stricter than SimpleXML
Maps XML to Data Types
Maps XML to Data Types
sdo/yahoo_search_results.xml sdo/yahoo_search_results.xml
<ResultSet <ResultSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
totalResultsReturned totalResultsReturned="3" firstResultPosition="1"> ="3" firstResultPosition="1"> < <Result Result> > < <Title Title>Zend Technologies - PHP 5 . . .</Title> >Zend Technologies - PHP 5 . . .</Title> <Summary>titletext = $dom-&gt;createText. . .</Summary> <Summary>titletext = $dom-&gt;createText. . .</Summary> < <Url Url>http://www.zend.com/php5/articles/php5-x. . .</Url> >http://www.zend.com/php5/articles/php5-x. . .</Url> <ClickUrl>http://uk.wrs.yahoo.com/_ylt=...</ClickUrl> <ClickUrl>http://uk.wrs.yahoo.com/_ylt=...</ClickUrl> < <ModificationDate ModificationDate>1171872000</ModificationDate> >1171872000</ModificationDate> <MimeType>text/html</MimeType> <MimeType>text/html</MimeType> <!-- Abbreviated Content --> <!-- Abbreviated Content --> </Result> </Result> <!-- Abbreviated Response --> <!-- Abbreviated Response --> </ResultSet> </ResultSet>
sdo sdo/yahoo_search.php /yahoo_search.php
/* URL to Web Search service */ /* URL to Web Search service */
$url = 'http://search.yahooapis.com/WebSearchService/V1/contextSearch'; $url = 'http://search.yahooapis.com/WebSearchService/V1/contextSearch'; $url .= '?query='.rawurlencode('php5 xml')."&appid=zzz&results=3&language=en&context=internet"; $url .= '?query='.rawurlencode('php5 xml')."&appid=zzz&results=3&language=en&context=internet";
$xsd = "http://search.yahooapis.com/WebSearchService/V1/WebSearchResponse.xsd"; $xsd = "http://search.yahooapis.com/WebSearchService/V1/WebSearchResponse.xsd";
$xmldas = SDO_DAS_XML::create($xsd); $xmldas = SDO_DAS_XML::create($xsd); $document = $xmldas->loadFile($url); $document = $xmldas->loadFile($url); $sxe = $document->getRootDataObject(); $sxe = $document->getRootDataObject();
/* Check for number of results returned */ /* Check for number of results returned */
if ((int)$sxe['totalResultsReturned'] > 0) { if ((int)$sxe['totalResultsReturned'] > 0) { /* Loop through results and print title, url and modification date */ /* Loop through results and print title, url and modification date */ foreach ($sxe->Result AS $result) { foreach ($sxe->Result AS $result) { print 'Title: '.$result->Title."\n"; print 'Title: '.$result->Title."\n"; print 'Url: '.$result->Url."\n"; print 'Url: '.$result->Url."\n"; print 'Mod Date: '.date ('M d Y', (int)$result->ModificationDate)."\n\n"; print 'Mod Date: '.date ('M d Y', (int)$result->ModificationDate)."\n\n";
} } } }
sdo sdo/yahoo_search2.php /yahoo_search2.php
/* URL to Web Search service */ /* URL to Web Search service */
$url = 'http://search.yahooapis.com/WebSearchService/V1/contextSearch'; $url = 'http://search.yahooapis.com/WebSearchService/V1/contextSearch'; $url .= '?query='.rawurlencode('php5 xml')."&appid=zzz&results=3&language=en&context=internet"; $url .= '?query='.rawurlencode('php5 xml')."&appid=zzz&results=3&language=en&context=internet";
$xsd = "http://search.yahooapis.com/WebSearchService/V1/WebSearchResponse.xsd"; $xsd = "http://search.yahooapis.com/WebSearchService/V1/WebSearchResponse.xsd";
$xmldas = SDO_DAS_XML::create($xsd); $xmldas = SDO_DAS_XML::create($xsd); $document = $xmldas->loadFile($url); $document = $xmldas->loadFile($url); $sxe = $document->getRootDataObject(); $sxe = $document->getRootDataObject();
/* Check for number of results returned */ /* Check for number of results returned */
if ( if ($sxe->totalResultsReturned $sxe->totalResultsReturned > 0) { > 0) { /* Loop through results and print title, url and modification date */ /* Loop through results and print title, url and modification date */ foreach ($sxe->Result AS $result) { foreach ($sxe->Result AS $result) { print 'Title: '.$result->Title."\n"; print 'Title: '.$result->Title."\n"; print 'Url: '.$result->Url."\n"; print 'Url: '.$result->Url."\n"; print 'Mod Date: '.date ('M d Y', print 'Mod Date: '.date ('M d Y', $result->ModificationDate $result->ModificationDate)."\n\n"; )."\n\n";
} } } }
RESULTS RESULTS
Title: Zend Technologies - PHP 5 In Depth - XML in PHP 5 - What's New? Title: Zend Technologies - PHP 5 In Depth - XML in PHP 5 - What's New? Url: http://www.zend.com/php5/articles/php5-xmlphp.php Url: http://www.zend.com/php5/articles/php5-xmlphp.php Mod Date: Feb 19 2007 Mod Date: Feb 19 2007 Title: Zend Developer Zone | XML in PHP 5 - What's New? Title: Zend Developer Zone | XML in PHP 5 - What's New? Url: http://devzone.zend.com/node/view/id/1713 Url: http://devzone.zend.com/node/view/id/1713 Mod Date: Feb 26 2007 Mod Date: Feb 26 2007 Title: Parsing XML using PHP5 Title: Parsing XML using PHP5 Url: http://www.developertutorials.com/tutorials/php/parsing-xml-using- Url: http://www.developertutorials.com/tutorials/php/parsing-xml-using- php5-050816/page1.html php5-050816/page1.html Mod Date: Feb 02 2007 Mod Date: Feb 02 2007
sdo/address.xsd sdo/address.xsd
<schema xmlns="http://www.w3.org/2001/XMLSchema" <schema xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:addr="urn::addressNS" targetNamespace="urn::addressNS" xmlns:addr="urn::addressNS" targetNamespace="urn::addressNS" elementFormDefault="qualified"> elementFormDefault="qualified">
<complexType name="AddressType"> <complexType name="AddressType"> <sequence> <sequence> <element name="street" type="string"/> <element name="street" type="string"/> <element name="city" type="string"/> <element name="city" type="string"/> <element name="state" type="string"/> <element name="state" type="string"/> <element name="zip" type="string"/> <element name="zip" type="string"/> </sequence> </sequence> </complexType> </complexType> <element name="address" type="addr:AddressType" /> <element name="address" type="addr:AddressType" /> </schema> </schema>
sdo/editing.php sdo/editing.php
$xmldas = SDO_DAS_XML::create("address.xsd"); $xmldas = SDO_DAS_XML::create("address.xsd"); $xdoc = $xmldas->createDocument(); $xdoc = $xmldas->createDocument(); $address = $xdoc->getRootDataObject(); $address = $xdoc->getRootDataObject(); $address->street = "123 My Street"; $address->street = "123 My Street"; $address->zip = 12345; $address->zip = 12345; $address->state = 'ME'; $address->state = 'ME'; $address->city = 'Portland'; $address->city = 'Portland'; print $xmldas->saveString($xdoc, 5); print $xmldas->saveString($xdoc, 5);
<?xml version="1.0" encoding="UTF-8"?> <?xml version="1.0" encoding="UTF-8"?> <address xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" <address xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tns="urn::addressNS" xmlns="urn::addressNS"> xmlns:tns="urn::addressNS" xmlns="urn::addressNS">
<street>123 My Street</street> <street>123 My Street</street> <city>Portland</city> <city>Portland</city> <state>ME</state> <state>ME</state> <zip>12345</zip> <zip>12345</zip> </address> </address>
sdo/editing_error.php sdo/editing_error.php
try { try { $xmldas = SDO_DAS_XML::create("address.xsd"); $xmldas = SDO_DAS_XML::create("address.xsd"); $xdoc = $xmldas->createDocument(" $xdoc = $xmldas->createDocument("address address"); "); $address = $xdoc->getRootDataObject(); $address = $xdoc->getRootDataObject(); $address->city = "Portland"; $address->city = "Portland"; $address-> $address->company company = "Local Thunder"; = "Local Thunder"; print($xmldas->saveString($xdoc, 5)); print($xmldas->saveString($xdoc, 5)); } catch (SDO_Exception $e) { } catch (SDO_Exception $e) { print "Error: ".$e->getMessage()."\n"; print "Error: ".$e->getMessage()."\n"; } } Error: Cannot find property:company Error: Cannot find property:company
Tree based parser
Tree based parser
Allows for creation and editing of XML documents
Allows for creation and editing of XML documents
W3C Specification with DOM Level 2/3 compliancy
W3C Specification with DOM Level 2/3 compliancy
Provides XPath support
Provides XPath support
Provides XInclude Support
Provides XInclude Support
Ability to work with HTML documents
Ability to work with HTML documents
Zero copy interoperability with SimpleXML
Zero copy interoperability with SimpleXML
Replacement for ext/domxml from PHP 4
Replacement for ext/domxml from PHP 4
DOMDocument
DOMDocument
DOMElement
DOMElement
DOMAttr
DOMAttr
DOMComment
DOMComment
DOMDocumentType
DOMDocumentType
DOMNotation
DOMNotation
DOMEntity
DOMEntity
DOMEntityReference
DOMEntityReference
DOMProcessingInstruction
DOMProcessingInstruction
DOMNameSpaceNode
DOMNameSpaceNode
DOMDocumentFragment
DOMDocumentFragment
DOMCharacterData
DOMCharacterData
DOMText
DOMText
DOMCdataSection
DOMCdataSection
DOMException DOMImplementation DOMNodeList DOMNamedNodeMap DOMXPath
Additional Classes
<courses> <courses> <course cid="c1"> <course cid="c1"> <title>Basic Languages</title> <title>Basic Languages</title> <description>Introduction to Languages</description> <description>Introduction to Languages</description> <credits>1.5</credits> <credits>1.5</credits> <lastmodified>2004-09-01T11:13:01</lastmodified> <lastmodified>2004-09-01T11:13:01</lastmodified> </course> </course> <course cid="c2"> <course cid="c2"> <title>French I</title> <title>French I</title> <description>Introduction to French</description> <description>Introduction to French</description> <credits>3.0</credits> <credits>3.0</credits> <lastmodified>2005-06-01T14:21:37</lastmodified> <lastmodified>2005-06-01T14:21:37</lastmodified> </course> </course> <course cid="c3"> <course cid="c3"> <title>French II</title> <title>French II</title> <description>Intermediate French</description> <description>Intermediate French</description> <credits>3.0</credits> <credits>3.0</credits> <lastmodified>2005-03-12T15:45:44</lastmodified> <lastmodified>2005-03-12T15:45:44</lastmodified> </course> </course> </courses> </courses>
dom/navigate-2.php dom/navigate-2.php
<?php $dom = new DOMDocument(); $dom->load('course.xml'); $nodelist = $dom->getElementsByTagName('description'); foreach ($nodelist AS $key=>$node) { print "#$key: ".$node->nodeValue."\n"; } ?>
Results:
#0: Introduction to Languages #1: Introduction to French #2: Intermediate French
dom/navigate-optimized.php dom/navigate-optimized.php
function locateDescription($node) { function locateDescription($node) { while($node) { while($node) { if ($node->nodeType if ($node->nodeType == XML_ELEMENT_NODE &&
== XML_ELEMENT_NODE &&
$node->nodeName $node->nodeName ==
== 'description') {
'description') { $GLOBALS['arNodeSet'][] = $node; $GLOBALS['arNodeSet'][] = $node; return; return; } } locateDescription($node->firstChild); locateDescription($node->firstChild); $node = $node->nextSibling; $node = $node->nextSibling;
} } } }
$dom = new DOMDocument(); $dom = new DOMDocument(); $dom->load('course.xml'); $dom->load('course.xml'); $root = $dom->documentElement; $root = $dom->documentElement; $arNodeSet = array(); $arNodeSet = array(); locateDescription($root->firstChild); locateDescription($root->firstChild); foreach ($arNodeSet AS $key=>$node) { foreach ($arNodeSet AS $key=>$node) { print "#$key: ".$node->nodeValue."\n"; print "#$key: ".$node->nodeValue."\n"; } }
dom/create_simple_tree.php dom/create_simple_tree.php
$doc = new DOMDocument(); $doc = new DOMDocument(); $root = $doc->createElement("tree"); $root = $doc->createElement("tree"); $doc->appendChild($root); $doc->appendChild($root); $root->setAttribute("att1", "att1 value"); $root->setAttribute("att1", "att1 value"); $attr2 = $doc->createAttribute("att2"); $attr2 = $doc->createAttribute("att2"); $attr2->appendChild($doc->createTextNode("att2 value")); $attr2->appendChild($doc->createTextNode("att2 value")); $root->setAttributeNode($attr2); $root->setAttributeNode($attr2); $child = $root->appendChild(new DOMElement("child")); $child = $root->appendChild(new DOMElement("child")); $comment = $doc->createComment("My first Document"); $comment = $doc->createComment("My first Document"); $doc->insertBefore($comment, $root); $doc->insertBefore($comment, $root); $pi = $doc->createProcessingInstruction("php", 'echo "Hello World!"'); $pi = $doc->createProcessingInstruction("php", 'echo "Hello World!"'); $root->appendChild($pi); $root->appendChild($pi); $cdata = $doc->createCdataSection("special chars: & < > '"); $cdata = $doc->createCdataSection("special chars: & < > '"); $child->appendChild($cdata); $child->appendChild($cdata);
<?xml version="1.0"?> <!--My first Document--> <tree att1="att1 value" att2="att2 value"> <child><![CDATA[special chars: & < > ']]></child> <?php echo "Hello World!"?> </tree>
Load with User Stream Load with User Stream
class MyStreamWrapper { class MyStreamWrapper { protected $stream = ' protected $stream = '<!--My first Document--><tree att1="att1 value" att2="att2 value">
<!--My first Document--><tree att1="att1 value" att2="att2 value"> <child><![CDATA[special chars: & < > ]]></child><?php echo "Hello World!"?></tree>'; <child><![CDATA[special chars: & < > ]]></child><?php echo "Hello World!"?></tree>';
public function stream_open($path, $mode, $options, $opened_path) { public function stream_open($path, $mode, $options, $opened_path) { $this->position = 0; $this->position = 0; $this->len = strlen($this->stream); $this->len = strlen($this->stream); return true; return true;
} }
public function stream_read($count) { public function stream_read($count) { $ret = substr($this->stream, $this->position, $count); $ret = substr($this->stream, $this->position, $count); $this->position += strlen($ret); $this->position += strlen($ret); return $ret; return $ret;
} } public function stream_close() { } public function stream_close() { } public function stream_eof() { return $this->position >= $this->len; } public function stream_eof() { return $this->position >= $this->len; } public function stream_stat() { return $this->len; } public function stream_stat() { return $this->len; } public function url_stat($path) { return array($this->len); } public function url_stat($path) { return array($this->len); } } } stream_wrapper_register('myStream', 'MyStreamWrapper'); stream_wrapper_register('myStream', 'MyStreamWrapper');
dom/modify.php dom/modify.php
<!--My first Document--> <!--My first Document--> <tree att1="att1 value" att2="att2 value"><child><![CDATA[special chars: & < > ]]></child> <tree att1="att1 value" att2="att2 value"><child><![CDATA[special chars: & < > ]]></child> <?php echo "Hello World!"?> <?php echo "Hello World!"?> </tree> </tree>
$doc = new DOMDocument(); $doc = new DOMDocument(); $doc->load('myStream://myData'); $doc->load('myStream://myData'); $tree = $doc->documentElement; $tree = $doc->documentElement; $tree->setAttribute("att1", "new val"); $tree->setAttribute("att1", "new val"); $tree->removeAttribute("att2"); $tree->removeAttribute("att2"); foreach ($tree->childNodes AS $child) { foreach ($tree->childNodes AS $child) { if ($child->nodeName == 'child') { if ($child->nodeName == 'child') { $child->replaceChild(new DOMText("new Content"), $child->firstChild); $child->replaceChild(new DOMText("new Content"), $child->firstChild); break; break; } } } } print $doc->saveXML(); print $doc->saveXML();
<!--My first Document--> <!--My first Document--> <tree att1="new val"> <child>new Content</child><?php echo "Hello World!"?></tree> <tree att1="new val"> <child>new Content</child><?php echo "Hello World!"?></tree>
/* Remove all children of an element */ /* Remove all children of an element */ while ($entry->hasChildNodes()) { while ($entry->hasChildNodes()) { $entry->removeChild($entry->firstChild); $entry->removeChild($entry->firstChild); } } OR OR $node = $entry->lastChild; $node = $entry->lastChild; while($node) { while($node) { $prev = $node->previousSibling; $prev = $node->previousSibling; $entry->removeChild($node); $entry->removeChild($node); $node = $prev; $node = $prev; } } /* This Will Not Work! */ /* This Will Not Work! */ foreach($entry->childNodes AS $node) { foreach($entry->childNodes AS $node) { $entry->removeChild($node); $entry->removeChild($node); } } /* These will work */ $children = $entry->childNodes; $length = $children->length - 1; for ($x=$length; $x >=0; $x--) { $entry->removeChild($children->item($x)); } OR $elem = $entry->cloneNode(FALSE); $entry->parentNode->replaceChild($elem, $entry);
<xsd:complexType <xsd:complexType xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" name="ArrayOfint"> name="ArrayOfint"> <xsd:complexContent> <xsd:complexContent> <xsd:restriction base="soapenc:Array"> <xsd:restriction base="soapenc:Array"> <xsd:attribute ref="soapenc:arrayType" <xsd:attribute ref="soapenc:arrayType" wsdl:arrayType="xsd:int[ ]" wsdl:arrayType="xsd:int[ ]"/> /> </xsd:restriction> </xsd:restriction> </xsd:complexContent> </xsd:complexContent> </xsd:complexType> </xsd:complexType>
dom/namespace.php dom/namespace.php
define("SCHEMA_NS", "http://www.w3.org/2001/XMLSchema"); define("SCHEMA_NS", "http://www.w3.org/2001/XMLSchema"); define("WSDL_NS", "http://schemas.xmlsoap.org/wsdl/"); define("WSDL_NS", "http://schemas.xmlsoap.org/wsdl/"); $dom = new DOMDocument(); $dom = new DOMDocument(); $root = $dom->createElementNS(SCHEMA_NS, "xsd:complexType"); $root = $dom->createElementNS(SCHEMA_NS, "xsd:complexType"); $dom->appendChild($root); $dom->appendChild($root); $root->setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:wsdl", WSDL_NS); $root->setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:wsdl", WSDL_NS); $root->setAttribute("name", "ArrayOfint"); $root->setAttribute("name", "ArrayOfint"); $content = $root->appendChild( $content = $root->appendChild(new DOMElement("xsd:complexContent", NULL, new DOMElement("xsd:complexContent", NULL, SCHEMA_NS) SCHEMA_NS)); ); $restriction = $content->appendChild( $restriction = $content->appendChild(new DOMElement("xsd:restriction", NULL, new DOMElement("xsd:restriction", NULL, SCHEMA_NS) SCHEMA_NS)); ); $restriction->setAttribute("base", "soapenc:Array"); $restriction->setAttribute("base", "soapenc:Array"); $attribute = $restriction->appendChild( $attribute = $restriction->appendChild(new DOMElement("xsd:attribute", NULL, new DOMElement("xsd:attribute", NULL, SCHEMA_NS) SCHEMA_NS)); ); $attribute->setAttribute("ref", "soapenc:arrayType"); $attribute->setAttribute("ref", "soapenc:arrayType"); $attribute->setAttributeNS(WSDL_NS, "wsdl:arrayType", "xsd:int[]"); $attribute->setAttributeNS(WSDL_NS, "wsdl:arrayType", "xsd:int[]");
dom/xpath/dom-xpath.xml dom/xpath/dom-xpath.xml
<books xmlns="http://www.example.com/books" <books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"> xmlns:bk="http://www.example.com/book"> <bk:book qty="25"> <bk:book qty="25"> <bk:name>Grapes of Wrath</bk:name> <bk:name>Grapes of Wrath</bk:name> <bk:price>12.99</bk:price> <bk:price>12.99</bk:price> </bk:book> </bk:book> <book qty="33" xmlns="http://www.example.com/ExteralClassics"> <book qty="33" xmlns="http://www.example.com/ExteralClassics"> <name>To Kill a Mockingbird</name> <name>To Kill a Mockingbird</name> <price>10.99</price> <price>10.99</price> </book> </book> </books> </books>
dom/xpath/dom-xpath.php dom/xpath/dom-xpath.php
<books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"> <books xmlns="http://www.example.com/books" xmlns:bk="http://www.example.com/book"> <bk:book qty="25"> <bk:book qty="25"> <bk:name>Grapes of Wrath</bk:name></bk:book> <bk:name>Grapes of Wrath</bk:name></bk:book> <book qty="33" xmlns="http://www.example.com/ExteralClassics"> <book qty="33" xmlns="http://www.example.com/ExteralClassics"> <name>To Kill a Mockingbird</name></book> <name>To Kill a Mockingbird</name></book> </books> </books>
$xpath = $xpath = new DOMXPath($doc); new DOMXPath($doc); $nodelist = $xpath-> $nodelist = $xpath->query query("//bk:name"); ("//bk:name"); print "Book Title: ".$nodelist->item($nodelist->length - 1)->textContent."\n"; print "Book Title: ".$nodelist->item($nodelist->length - 1)->textContent."\n"; $inventory = $xpath-> $inventory = $xpath->evaluate evaluate("sum(//@qty)"); ("sum(//@qty)"); print "Total Books: ".$inventory."\n"; print "Total Books: ".$inventory."\n"; $xpath->registerNameSpace("ec", "http://www.example.com/ExteralClassics"); $xpath->registerNameSpace("ec", "http://www.example.com/ExteralClassics"); $nodelist = $xpath-> $nodelist = $xpath->query query("//ec:book"); ("//ec:book"); $book = $nodelist->item(0); $book = $nodelist->item(0); $inventory = $xpath-> $inventory = $xpath->evaluate evaluate("sum(./@qty)", ("sum(./@qty)", $book $book); ); print "Total Books: ".$inventory."\n"; print "Total Books: ".$inventory."\n";
Book Title: Grapes of Wrath Book Title: Grapes of Wrath Total Books: 58 Total Books: 58 Total Books: 33 Total Books: 33
dom/validation/validate.php dom/validation/validate.php $doc = new DOMDocument(); $doc = new DOMDocument(); print "DTD Validation:\n"; print "DTD Validation:\n"; $doc->load('courses-dtd.xml', LIBXML_DTDVALID); $doc->load('courses-dtd.xml', LIBXML_DTDVALID); /* No errors means document is valid */ /* No errors means document is valid */ if ($doc->validate()) { print " Document Is Valid\n"; } if ($doc->validate()) { print " Document Is Valid\n"; } print "DTD Validation FAILURE:\n"; print "DTD Validation FAILURE:\n"; $doc->load('course-id.xml'); $doc->load('course-id.xml'); if ( if ($doc->validate() $doc->validate()) { print " Document Is Valid\n"; } ) { print " Document Is Valid\n"; } $doc->load('course.xml'); $doc->load('course.xml'); print "\nXML Schema Validation:\n"; print "\nXML Schema Validation:\n"; if ( if ($doc->schemaValidate('course.xsd') $doc->schemaValidate('course.xsd')) { print " Document is valid\n"; } ) { print " Document is valid\n"; } $doc->load('course.xml'); $doc->load('course.xml'); print "\nRelaxNG Validation:\n"; print "\nRelaxNG Validation:\n"; if ( if ($doc->relaxNGValidate('course.rng') $doc->relaxNGValidate('course.rng')) { print " Document is valid\n"; ) { print " Document is valid\n"; } }
DTD Validation: DTD Validation: Document Is Valid Document Is Valid DTD Validation FAILURE: DTD Validation FAILURE: Warning: DOMDocument::validate(): No declaration for element courses in Warning: DOMDocument::validate(): No declaration for element courses in /home/rrichards/workshop/dom/validation/validate.php on line 11 /home/rrichards/workshop/dom/validation/validate.php on line 11 Warning: DOMDocument::validate(): No declaration for element course in Warning: DOMDocument::validate(): No declaration for element course in /home/rrichards/workshop/dom/validation/validate.php on line 11 /home/rrichards/workshop/dom/validation/validate.php on line 11 Warning: DOMDocument::validate(): No declaration for element title in Warning: DOMDocument::validate(): No declaration for element title in /home/rrichards/workshop/dom/validation/validate.php on line 11 /home/rrichards/workshop/dom/validation/validate.php on line 11 . . . . . . XML Schema Validation: XML Schema Validation: Document is valid Document is valid RelaxNG Validation: RelaxNG Validation: Document is valid Document is valid
Overriding the constructor requires the parent
Properties built into the DOM classes cannot
Methods built into the DOM classes may can
The lifespan of an extended object is that of
dom/extending/ dom/extending/extending.php
extending.php class customElement extends DOMElement { } class customElement extends DOMElement { } class customDoc extends DOMDocument { class customDoc extends DOMDocument { public $nodeName = "customDoc";
public $nodeName = "customDoc";
function __construct($rootName) { function __construct($rootName) { parent::__construct(); parent::__construct(); if (! empty($rootName)) if (! empty($rootName)) $element = $this->appendChild(new DOMElement($rootName)); $element = $this->appendChild(new DOMElement($rootName));
} }
function createElement($name, $value, $parent=NULL) { function createElement($name, $value, $parent=NULL) { $custom = new customElement($name, $value); $custom = new customElement($name, $value); if ($parent && ($parent instanceof DOMElement)) { if ($parent && ($parent instanceof DOMElement)) { $parent->appendChild($custom); } $parent->appendChild($custom); } return $custom; return $custom;
} } } }
$myc = new customDoc("root"); $myc = new customDoc("root"); $myelement = $myc->createElement("myname", "value", $myc->documentElement); $myelement = $myc->createElement("myname", "value", $myc->documentElement); if ($myelement instanceof customElement) { print "This is a customElement\n"; } if ($myelement instanceof customElement) { print "This is a customElement\n"; }
print $myc->nodeName."\n"; print $myc->nodeName."\n"; print $myc->saveXML(); print $myc->saveXML();
dom/extending/object_scope.php dom/extending/object_scope.php
class customElement extends DOMElement { } class customElement extends DOMElement { } function changeit($doc) { function changeit($doc) { $myelement $myelement = new customElement("custom", "element2"); = new customElement("custom", "element2"); $doc->replaceChild($myelement, $doc->documentElement); $doc->replaceChild($myelement, $doc->documentElement); print "Within changeit function: ".get_class($doc->documentElement)."\n"; print "Within changeit function: ".get_class($doc->documentElement)."\n"; } } $doc = new DOMDocument(); $doc = new DOMDocument(); $myelement $myelement = $doc->appendChild(new customElement("custom", "element")); = $doc->appendChild(new customElement("custom", "element")); print "After Append: ".get_class($myelement)."\n"; print "After Append: ".get_class($myelement)."\n"; unset($myelement); unset($myelement); print "After unset: ".get_class($doc->documentElement)."\n"; print "After unset: ".get_class($doc->documentElement)."\n"; changeit($doc); changeit($doc); print "Outside changeit(): ".get_class($doc->documentElement)."\n"; print "Outside changeit(): ".get_class($doc->documentElement)."\n"; After Append: customElement After Append: customElement After unset: DOMElement After unset: DOMElement Within changeit function: customElement Within changeit function: customElement Outside changeit(): DOMElement Outside changeit(): DOMElement
dom/extending/register_node_class.php dom/extending/register_node_class.php
class customElement extends DOMElement { } class customElement extends DOMElement { } function changeit($doc) { function changeit($doc) { $myelement $myelement = new DOMElement("custom", "element2"); = new DOMElement("custom", "element2"); $doc->replaceChild($myelement, $doc->documentElement); $doc->replaceChild($myelement, $doc->documentElement); print "Within changeit function: ".get_class($doc->documentElement)."\n"; print "Within changeit function: ".get_class($doc->documentElement)."\n";
} }
$doc = new DOMDocument(); $doc = new DOMDocument(); $doc->registerNodeClass('DOMElement', 'customElement'); $doc->registerNodeClass('DOMElement', 'customElement'); $myelement $myelement = $doc->appendChild($doc->createElement("custom", "element")); = $doc->appendChild($doc->createElement("custom", "element")); print "After Append: ".get_class($myelement)."\n"; print "After Append: ".get_class($myelement)."\n"; unset($myelement); unset($myelement); print "After unset: ".get_class($doc->documentElement)."\n"; print "After unset: ".get_class($doc->documentElement)."\n"; changeit($doc); changeit($doc); print "Outside changeit(): ".get_class($doc->documentElement)."\n"; print "Outside changeit(): ".get_class($doc->documentElement)."\n"; After Append: customElement After Append: customElement After unset: customElement After unset: customElement Within changeit function: DOMElement Within changeit function: DOMElement Outside changeit(): customElement Outside changeit(): customElement
DOM Objects and Sessions
DOM Objects and Sessions
Removing Nodes while iterating a Nodeset skips
Removing Nodes while iterating a Nodeset skips nodes nodes
XML Tree contains garbled characters
XML Tree contains garbled characters
Extended class is not returned from property or
Extended class is not returned from property or method method
Elements not being returned by ID
Elements not being returned by ID
Entity errors are issues when loading a document
Entity errors are issues when loading a document
New DTD is not recognized by document
New DTD is not recognized by document
Forward moving stream based parser
Forward moving stream based parser
It is a Pull parser
It is a Pull parser
Based on the C# XmlTextReader API
Based on the C# XmlTextReader API
Advantages:
Advantages:
Low memory footprint
Low memory footprint
Namespace support
Namespace support
Simple API
Simple API
Validation support
Validation support
Advanced Feature Set
Advanced Feature Set
Faster Processing
Faster Processing
xmlreader/reader_simple.xml xmlreader/reader_simple.xml <?xml version='1.0'?> <?xml version='1.0'?> <chapter xmlns:a="http://www.example.com/namespace-a" <chapter xmlns:a="http://www.example.com/namespace-a" xmlns="http://www.example.com/default"> xmlns="http://www.example.com/default"> <a:title>XMLReader</a:title> <a:title>XMLReader</a:title> <para> <para> First Paragraph First Paragraph </para> </para> <a:section a:id="about"> <a:section a:id="about"> <title>About this Document</title> <title>About this Document</title> <para> <para> <!-- this is a comment --> <!-- this is a comment --> <?php echo 'Hi! This is PHP version ' . phpversion(); ?> <?php echo 'Hi! This is PHP version ' . phpversion(); ?> </para> </para> </a:section> </a:section> </chapter> </chapter>
xmlreader/reader_simple.php xmlreader/reader_simple.php
$reader = new XMLReader(); $reader = new XMLReader(); $reader->open('reader_simple.xml'); $reader->open('reader_simple.xml'); $reader->read(); $reader->read(); print "xmlns Attribute value: ".$reader->getAttributeNo(0)."\n\n"; print "xmlns Attribute value: ".$reader->getAttributeNo(0)."\n\n";
while ($reader->read() && $reader->name != "a:title") { } while ($reader->read() && $reader->name != "a:title") { }
print "Local Name for Element: ".$reader->localName."\n"; print "Local Name for Element: ".$reader->localName."\n"; print "Namespace URI for Element: ".$reader->namespaceURI."\n"; print "Namespace URI for Element: ".$reader->namespaceURI."\n";
while($reader->read()) { while($reader->read()) { switch ($reader->nodeType) { switch ($reader->nodeType) { case XMLReader::ELEMENT: case XMLReader::ELEMENT: print "Element: ".$reader->name."\n"; print "Element: ".$reader->name."\n"; if ($reader->hasAttributes && $reader->moveToFirstAttribute()) { if ($reader->hasAttributes && $reader->moveToFirstAttribute()) { do { do {
print " ".$reader->name."=".$reader->value."\n"; print " ".$reader->name."=".$reader->value."\n";
} while($reader->moveToNextAttribute()); } while($reader->moveToNextAttribute()); } } break; break; case XMLReader::PI: case XMLReader::PI:
print "PI Target: ".$reader->name."\n PI Data: ".$reader->value."\n"; print "PI Target: ".$reader->name."\n PI Data: ".$reader->value."\n";
} } } }
RESULTS RESULTS
xmlns Attribute value: http://www.example.com/namespace-a xmlns Attribute value: http://www.example.com/namespace-a Local Name for Element: title Local Name for Element: title Namespace URI for Element: Namespace URI for Element: http://www.example.com/namespace-a
http://www.example.com/namespace-a
Element: para Element: para Element: a:section Element: a:section a:id=about a:id=about Element: title Element: title Element: para Element: para PI Target: php PI Target: php PI Data: echo 'Hi! This is PHP version ' . phpversion(); PI Data: echo 'Hi! This is PHP version ' . phpversion();
<?xml version="1.0" encoding="ISO-8859-1"?> <?xml version="1.0" encoding="ISO-8859-1"?> <ResultSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" <ResultSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:yahoo:prods" xmlns="urn:yahoo:prods" xsi:schemaLocation="urn:yahoo:prods xsi:schemaLocation="urn:yahoo:prods http://api.shopping.yahoo.com/shoppingservice/v1/productsearch.xsd" http://api.shopping.yahoo.com/shoppingservice/v1/productsearch.xsd" totalResultsAvailable="8850" firstResultPosition="2" totalResultsReturned="2"> totalResultsAvailable="8850" firstResultPosition="2" totalResultsReturned="2">
< <Result Result> > < <Catalog Catalog ID="1991433722"> ID="1991433722"> < <Url Url><![CDATA[http://shopping.yahoo.com/p:Linksys. . .2]]></Url> ><![CDATA[http://shopping.yahoo.com/p:Linksys. . .2]]></Url> < <ProductName ProductName><![CDATA[Linksys WRT5. . .r Broadband ><![CDATA[Linksys WRT5. . .r Broadband Router]]></ProductName> Router]]></ProductName> < <PriceFrom PriceFrom>69.97</PriceFrom> >69.97</PriceFrom> < <PriceTo PriceTo>89.99</PriceTo> >89.99</PriceTo> <Thumbnail /><!-- child elements Url (CDATA), Height, Width --> <Thumbnail /><!-- child elements Url (CDATA), Height, Width --> < <Description Description><![CDATA[The Wireless-G . . .ces.]]></Description> ><![CDATA[The Wireless-G . . .ces.]]></Description> <Summary><![CDATA[IEEE 802.3, ...]]></Summary> <Summary><![CDATA[IEEE 802.3, ...]]></Summary> <UserRating /><!-- Rating sub elements --> <UserRating /><!-- Rating sub elements --> <SpecificationList /><!-- 0+ Specification child elements --></SpecificationList> <SpecificationList /><!-- 0+ Specification child elements --></SpecificationList> </Catalog> </Catalog> </Result> </Result> </ResultSet> </ResultSet>
xmlreader/rest_yahoo_shopping.php xmlreader/rest_yahoo_shopping.php
function getTextValue($reader) { ... } function getTextValue($reader) { ... } function processCatalog($reader) { ... } function processCatalog($reader) { ... } function processResult($reader) { ... } function processResult($reader) { ... } /* URL to Product Search service */ /* URL to Product Search service */ $url = 'http://api.shopping.yahoo.com/ShoppingService/V1/productSearch'; $url = 'http://api.shopping.yahoo.com/ShoppingService/V1/productSearch'; /* The query is separate here as the terms must be encoded. */ /* The query is separate here as the terms must be encoded. */ $url .= '?query='.rawurlencode('linksys'); $url .= '?query='.rawurlencode('linksys'); /* Complete the URL with App ID, limit to 1 result and start at second record */ /* Complete the URL with App ID, limit to 1 result and start at second record */ $url .= "&appid=zzz&results=2&start=2"; $url .= "&appid=zzz&results=2&start=2";
$reader = new XMLReader(); $reader = new XMLReader(); if (! $reader->open($url)) { print "Cannot access Webservice\n"; exit; } if (! $reader->open($url)) { print "Cannot access Webservice\n"; exit; } while($reader->name != "Result") { $reader->read(); } while($reader->name != "Result") { $reader->read(); } do { do { processResult($reader); processResult($reader); } while($reader->next('Result')); } while($reader->next('Result'));
xmlreader/rest_yahoo_shopping.php xmlreader/rest_yahoo_shopping.php function getTextValue($reader) { function getTextValue($reader) { if ($reader->nodeType != if ($reader->nodeType != XMLReader::ELEMENT
XMLReader::ELEMENT || $reader->isEmptyElement
|| $reader->isEmptyElement || ($reader->read() && $reader->nodeType == || ($reader->read() && $reader->nodeType == XMLReader::END_ELEMENT
XMLReader::END_ELEMENT))
)) return; return; $retVal = $reader->value; $retVal = $reader->value; $reader->read(); $reader->read(); return $retVal; return $retVal;
} }
function processResult($reader) { function processResult($reader) { $depth = $reader->depth; $depth = $reader->depth; if ($reader->isEmptyElement || ($reader->read() && if ($reader->isEmptyElement || ($reader->read() && $reader->nodeType == $reader->nodeType == XMLReader::END_ELEMENT
XMLReader::END_ELEMENT))
)) return; return; while($depth < $reader->depth && $reader->name != "Catalog") { $reader->read(); while($depth < $reader->depth && $reader->name != "Catalog") { $reader->read(); }; }; processCatalog($reader); processCatalog($reader); /* Read until </Result> is encountered */ /* Read until </Result> is encountered */ while($depth < $reader->depth) { $reader->read(); } while($depth < $reader->depth) { $reader->read(); }
} }
xmlreader/rest_yahoo_shopping.php xmlreader/rest_yahoo_shopping.php
function processCatalog($reader) { function processCatalog($reader) { $depth = $reader->depth; $depth = $reader->depth; print "Catalog ID".$reader->getAttribute('ID')."\n"; print "Catalog ID".$reader->getAttribute('ID')."\n"; if ($reader->isEmptyElement || ($reader->read() && if ($reader->isEmptyElement || ($reader->read() && $reader->nodeType == $reader->nodeType == XMLReader::END_ELEMENT
XMLReader::END_ELEMENT))
)) return; return; while($depth < $reader->depth) { while($depth < $reader->depth) { switch ($reader->name) { switch ($reader->name) { case "ProductName": case "ProductName": case "PriceFrom": case "PriceFrom": case "PriceTo": case "PriceTo": case "Description": case "Description": case "Url": case "Url": print $reader->name.": ".getTextValue($reader)."\n"; print $reader->name.": ".getTextValue($reader)."\n"; } } $reader->next(); $reader->next();
} } } }
RESULTS (Abbreviated) RESULTS (Abbreviated) Catalog ID1990338714 Catalog ID1990338714 Url: Url: http://shopping.yahoo.com/p:Linksys%20Instant%20Broadband%20Ether http://shopping.yahoo.com/p:Linksys%20Instant%20Broadband%20Ether Fast%20Cable%2FDSL%20Router:1990338714 Fast%20Cable%2FDSL%20Router:1990338714 ProductName: Linksys Instant Broadband EtherFast Cable/DSL Router ProductName: Linksys Instant Broadband EtherFast Cable/DSL Router PriceFrom: 39.99 PriceFrom: 39.99 PriceTo: 72.71 PriceTo: 72.71 Description: <P>Linksys, a provider of networking hardware for the Description: <P>Linksys, a provider of networking hardware for the small/medium business (SMB), small office/home office (SOHO), and small/medium business (SMB), small office/home office (SOHO), and enterprise markets and broadband networking hardware for the home, has enterprise markets and broadband networking hardware for the home, has announced the new EtherFast Cable/DSL Router. The first in the new announced the new EtherFast Cable/DSL Router. The first in the new Instant Broadband series, this Linksys broadband router will enable home Instant Broadband series, this Linksys broadband router will enable home
securely share Internet access and perform networking tasks such as file securely share Internet access and perform networking tasks such as file and printer sharing. The built-in hardware firewall gives users the security and printer sharing. The built-in hardware firewall gives users the security
xmlreader/validation/reader.xml xmlreader/validation/reader.xml <!DOCTYPE chapter [ <!DOCTYPE chapter [ <!ELEMENT chapter (title, para, section)> <!ELEMENT chapter (title, para, section)> <!ELEMENT title (#PCDATA)> <!ELEMENT title (#PCDATA)> <!ELEMENT para ANY> <!ELEMENT para ANY> <!ATTLIST para name CDATA "default"> <!ATTLIST para name CDATA "default"> <!ELEMENT section (#PCDATA)> <!ELEMENT section (#PCDATA)> <!ATTLIST section id ID #REQUIRED> <!ATTLIST section id ID #REQUIRED> ]> ]> <chapter> <chapter> <title>XMLReader</title> <title>XMLReader</title> <para> <para> First Paragraph First Paragraph </para> </para> <section id="about"> <section id="about"> <title>About this Document</title> <title>About this Document</title> <para>content</para> <para>content</para> </section> </section> </chapter> </chapter>
xmlreader/validation/reader.php xmlreader/validation/reader.php $objReader = XMLReader::open('reader.xml'); $objReader = XMLReader::open('reader.xml'); $objReader->setParserProperty(XMLReader::VALIDATE, TRUE); $objReader->setParserProperty(XMLReader::VALIDATE, TRUE); /* As of PHP 5.2 LIBXML Parser Options may be passed */ /* As of PHP 5.2 LIBXML Parser Options may be passed */ // $objReader = XMLReader::open('reader.xml', NULL, // $objReader = XMLReader::open('reader.xml', NULL, LIBXML_DTDVALID); LIBXML_DTDVALID); libxml_use_internal_errors(TRUE); libxml_use_internal_errors(TRUE); while ($objReader->read()) { while ($objReader->read()) { if ( if (! $objReader->isValid() ! $objReader->isValid()) { ) { print "NOT VALID\n"; print "NOT VALID\n"; break; break; } } } } $arErrors = libxml_get_errors(); $arErrors = libxml_get_errors(); foreach ($arErrors AS $xmlError) { foreach ($arErrors AS $xmlError) { print $xmlError->message; print $xmlError->message; } }
RESULTS RESULTS PHP Strict Standards: Non-static method XMLReader::open() should not be PHP Strict Standards: Non-static method XMLReader::open() should not be called statically in /home/rrichards/workshop/xmlreader/validation/reader.php called statically in /home/rrichards/workshop/xmlreader/validation/reader.php
NOT VALID NOT VALID Element section was declared #PCDATA but contains non Element section was declared #PCDATA but contains non text nodes text nodes
xmlreader/validation/reader.rng xmlreader/validation/reader.rng
<?xml version="1.0" encoding="utf-8" ?> <?xml version="1.0" encoding="utf-8" ?> <element name="chapter" <element name="chapter" xmlns="http://relaxng.org/ns/structure/1.0"> xmlns="http://relaxng.org/ns/structure/1.0"> <element name="title"> <element name="title"> <text/> <text/> </element> </element> <element name="para"> <element name="para"> <text/> <text/> </element> </element> <element name="section"> <element name="section"> <attribute name="id" /> <attribute name="id" /> <text/> <text/> </element> </element> </element> </element>
xmlreader/validation/reader-rng.php xmlreader/validation/reader-rng.php $objReader = XMLReader::open('reader.xml'); $objReader = XMLReader::open('reader.xml'); $objReader->setRelaxNGSchema('reader.rng'); $objReader->setRelaxNGSchema('reader.rng'); libxml_use_internal_errors(TRUE); libxml_use_internal_errors(TRUE); while ($objReader->read()) { while ($objReader->read()) { if ( if (! $objReader->isValid() ! $objReader->isValid()) { ) { print "NOT VALID\n"; print "NOT VALID\n"; break; break; } } } } $arErrors = libxml_get_errors(); $arErrors = libxml_get_errors(); foreach ($arErrors AS $xmlError) { foreach ($arErrors AS $xmlError) { print $xmlError->message; print $xmlError->message; } }
RESULTS RESULTS PHP Strict Standards: Non-static method XMLReader::open() should not be PHP Strict Standards: Non-static method XMLReader::open() should not be called statically in /home/rrichards/workshop/xmlreader/validation/reader.php called statically in /home/rrichards/workshop/xmlreader/validation/reader.php
NOT VALID NOT VALID Did not expect element title there Did not expect element title there
xmlreader/validation/reader.xsd xmlreader/validation/reader.xsd <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <xsd:element name="chapter"> <xsd:element name="chapter"> <xsd:complexType> <xsd:complexType> <xsd:sequence> <xsd:sequence> <xsd:element name="title" type="xsd:string"/> <xsd:element name="title" type="xsd:string"/> <xsd:element name="para" type="xsd:string"/> <xsd:element name="para" type="xsd:string"/> <xsd:element name="section"> <xsd:element name="section"> <xsd:complexType> <xsd:complexType> <xsd:simpleContent> <xsd:simpleContent> <xsd:extension base="xsd:string"> <xsd:extension base="xsd:string"> <xsd:attribute name="id" type="xsd:ID"/> <xsd:attribute name="id" type="xsd:ID"/> </xsd:extension> </xsd:extension> </xsd:simpleContent> </xsd:simpleContent> </xsd:complexType> </xsd:complexType> </xsd:element> </xsd:element> </xsd:sequence> </xsd:sequence> </xsd:complexType> </xsd:complexType> </xsd:element> </xsd:element> </xsd:schema> </xsd:schema>
xmlreader/validation/reader-xsd.php xmlreader/validation/reader-xsd.php $objReader = XMLReader::open('reader.xml'); $objReader = XMLReader::open('reader.xml'); $objReader->setSchema('reader.xsd'); $objReader->setSchema('reader.xsd'); libxml_use_internal_errors(TRUE); libxml_use_internal_errors(TRUE); while ($objReader->read()) { while ($objReader->read()) { if ( if (! $objReader->isValid() ! $objReader->isValid()) { ) { print "NOT VALID\n"; print "NOT VALID\n"; break; break; } } } } $arErrors = libxml_get_errors(); $arErrors = libxml_get_errors(); foreach ($arErrors AS $xmlError) { foreach ($arErrors AS $xmlError) { print $xmlError->message; print $xmlError->message; } } LIBXML2-2.20+ REQUIRED LIBXML2-2.20+ REQUIRED
RESULTS RESULTS PHP Strict Standards: Non-static method XMLReader::open() should not be PHP Strict Standards: Non-static method XMLReader::open() should not be called statically in /home/rrichards/workshop/xmlreader/validation/reader.php called statically in /home/rrichards/workshop/xmlreader/validation/reader.php
NOT VALID NOT VALID Element 'para', attribute 'name': The attribute 'name' is not Element 'para', attribute 'name': The attribute 'name' is not allowed. allowed. Element 'section': Element content is not allowed, because Element 'section': Element content is not allowed, because the content type is a simple type definition. the content type is a simple type definition.
Pros:
Full navigation and modification of the XML
Full navigation and modification of the XML document document
Navigating and searching are extremely fast once
Navigating and searching are extremely fast once the tree is loaded into memory the tree is loaded into memory
Cons:
Must wait until entire tree is loaded to begin
Must wait until entire tree is loaded to begin working with the XML. working with the XML.
Memory intensive
Memory intensive
Pros:
Uses minimal memory
Uses minimal memory
Processing takes place immediately while the
Processing takes place immediately while the document is parsed document is parsed
Cons:
Minimal to no navigation support (forward only)
Minimal to no navigation support (forward only)
No document editing capabilities
No document editing capabilities
<books> <books> <book id="1"><title>1</title><pages>1</pages></book> <book id="1"><title>1</title><pages>1</pages></book> <book id="2"><title>2</title><pages>2</pages></book> <book id="2"><title>2</title><pages>2</pages></book> <!-- Remaining book elements for a total of 200,000 --> <!-- Remaining book elements for a total of 200,000 --> </books> </books>
Memory Usage: Memory Usage: 177KB 26KB 85.6MB 85.6MB XMLReader ext/xml SimpleXML DOM 0.238 0.930 6.583 6.623 XMLReader ext/xml SimpleXML DOM
Using every optimization possible the following results show the time in seconds to locate the book element having id="5000".
Average Time in Seconds for Optimized Search for an Element:
Lightweight and forward-only API for
Automatically escapes data
Works with PHP 4.3+ available at
Object Oriented API available for PHP 5+
Part of core PHP distribution since PHP 5.1.2
xmlwriter/simple.php xmlwriter/simple.php
<?php <?php $xw = new XMLWriter(); $xw = new XMLWriter(); $xw->openMemory(); $xw->openMemory(); /* Turn on indenting to make output look pretty and set string /* Turn on indenting to make output look pretty and set string used for indenting as teh default space is too short*/ used for indenting as teh default space is too short*/ $xw->setIndent(TRUE); $xw->setIndent(TRUE); $xw->setIndentString(' '); $xw->setIndentString(' '); /* Write out the optional XML declaration only specifying version */ /* Write out the optional XML declaration only specifying version */ $xw->startDocument('1.0'); $xw->startDocument('1.0'); /* Create the opening document element, which is namespaced */ /* Create the opening document element, which is namespaced */ $xw->startElementNs(NULL, "chapter", "http://www.example.com/default"); $xw->startElementNs(NULL, "chapter", "http://www.example.com/default"); /* Write out an xml namespace declaration that is used later in the document */ /* Write out an xml namespace declaration that is used later in the document */ $res = $xw->writeAttribute('xmlns:a', 'http://www.example.com/namespace-a'); $res = $xw->writeAttribute('xmlns:a', 'http://www.example.com/namespace-a'); /* Write complete elements with text content */ /* Write complete elements with text content */ $xw->writeElement('a:title', 'XMLReader'); $xw->writeElement('a:title', 'XMLReader'); $xw->writeElement('para', 'spec chars < > & " inside para element'); $xw->writeElement('para', 'spec chars < > & " inside para element');
xmlwriter/simple.php xmlwriter/simple.php
/* start an element and add an attribute to it */ /* start an element and add an attribute to it */ $xw->startElement('a:section'); $xw->startElement('a:section'); $xw->writeAttribute('a:id', 'about'); $xw->writeAttribute('a:id', 'about'); /* Write out an element with special characters */ /* Write out an element with special characters */ $xw->writeElement('title', 'Pro PHP XML & Webservices'); $xw->writeElement('title', 'Pro PHP XML & Webservices'); $xw->startElement('para'); /* This opens the para element */ $xw->startElement('para'); /* This opens the para element */ $xw->writeComment("this is a comment"); $xw->writeComment("this is a comment"); $xw->text(" "); $xw->text(" "); $xw->writePi("php", "echo 'Hi! This is PHP version ' . phpversion(); "); $xw->writePi("php", "echo 'Hi! This is PHP version ' . phpversion(); "); $xw->text("\n "); $xw->text("\n "); $xw->endElement(); /* This will close the open para element */ $xw->endElement(); /* This will close the open para element */ $xw->endDocument(); $xw->endDocument(); /* Flush and clear the buffer */ /* Flush and clear the buffer */ echo $xw->flush(true); echo $xw->flush(true); ?> ?>
xmlwriter/simple.php xmlwriter/simple.php
/* start an element and add an attribute to it */ /* start an element and add an attribute to it */ $xw->startElement('a:section'); $xw->startElement('a:section'); $xw->writeAttribute('a:id', 'about'); $xw->writeAttribute('a:id', 'about'); /* Write out an element with special characters */ /* Write out an element with special characters */ $xw->writeElement('title', 'Pro PHP XML & Webservices'); $xw->writeElement('title', 'Pro PHP XML & Webservices'); $xw->startElement('para'); /* This opens the para element */ $xw->startElement('para'); /* This opens the para element */ $xw->writeComment("this is a comment"); $xw->writeComment("this is a comment"); $xw->text(" "); $xw->text(" "); $xw->writePi("php", "echo 'Hi! This is PHP version ' . phpversion(); "); $xw->writePi("php", "echo 'Hi! This is PHP version ' . phpversion(); "); $xw->text("\n "); $xw->text("\n "); $xw->endElement(); /* This will close the open para element */ $xw->endElement(); /* This will close the open para element */ $xw->endDocument(); $xw->endDocument(); /* Flush and clear the buffer */ /* Flush and clear the buffer */ echo $xw->flush(true); echo $xw->flush(true); ?> ?>
Results Results
<?xml version="1.0"?> <?xml version="1.0"?> <chapter xmlns="http://www.example.com/default" <chapter xmlns="http://www.example.com/default" xmlns:a="http://www.example.com/namespace-a"> xmlns:a="http://www.example.com/namespace-a"> <a:title>XMLReader</a:title> <a:title>XMLReader</a:title> <para>spec chars < > & " inside para <para>spec chars < > & " inside para element</para> element</para> <a:section a:id="about"> <a:section a:id="about"> <title>Pro PHP XML & Webservices</title> <title>Pro PHP XML & Webservices</title> <para> <para> <!--this is a comment--> <!--this is a comment--> <?php echo 'Hi! This is PHP version ' . phpversion(); ?> <?php echo 'Hi! This is PHP version ' . phpversion(); ?> </para> </para> </a:section> </a:section> </chapter> </chapter>
Used to transform XML data
Used to transform XML data
XSLT based on XPath
XSLT based on XPath
Works with DOM and SimpleXML, although the
Works with DOM and SimpleXML, although the DOM extension is required. DOM extension is required.
Provides the capability of calling PHP functions
Provides the capability of calling PHP functions during a transformation during a transformation
DOM nodes may be returned from PHP functions
DOM nodes may be returned from PHP functions
The LIBXML_NOCDATA and LIBXML_NOENT
The LIBXML_NOCDATA and LIBXML_NOENT constants are your friends. constants are your friends.
libxslt 1.1.5+ is recommended to avoid problems
libxslt 1.1.5+ is recommended to avoid problems when using xsl:key when using xsl:key
xsl/sites.xml xsl/sites.xml
<?xml version="1.0"?> <?xml version="1.0"?> <sites> <sites> <site xml:id="php-gen"> <site xml:id="php-gen"> <name>PHP General</name> <name>PHP General</name> <url>http://news.php.net/group.php?group=php.general&format=rss</url> <url>http://news.php.net/group.php?group=php.general&format=rss</url> </site> </site> <site xml:id="php-pear"> <site xml:id="php-pear"> <name>PHP Pear Dev</name> <name>PHP Pear Dev</name> <url>http://news.php.net/group.php?group=php.pear.dev&format=rss</url> <url>http://news.php.net/group.php?group=php.pear.dev&format=rss</url> </site> </site> <site xml:id="php-planet"> <site xml:id="php-planet"> <name>Planet PHP</name> <name>Planet PHP</name> <url>http://www.planet-php.org/rss/</url> <url>http://www.planet-php.org/rss/</url> </site> </site> </sites> </sites>
xsl/simple_stylesheet.xsl xsl/simple_stylesheet.xsl
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="html"/> <xsl:template match="/"> <html> <body> <xsl:apply-templates select="/sites/site"/> </body> </html> </xsl:template> <xsl:template match="/sites/site"> <p><xsl:value-of select="./name"/> : <xsl:value-of select="./url" disable-output-escaping="yes"/></p> </xsl:template> </xsl:stylesheet>
xsl/simple_stylesheet.php xsl/simple_stylesheet.php /* Load Stylesheet */ $stylesheet = new DOMDocument(); $stylesheet->load('simple_stylesheet.xsl'); /* Create XSL Processor */ $proc = new xsltprocessor(); $proc->importStylesheet($stylesheet); /* Load XML Data */ $dom = new DOMDocument(); $dom->load('sites.xml'); print $proc->transformToXML($dom);
RESULTS RESULTS <html> <body> <p>PHP General : http://news.php.net/group.php?group=php.general&format=rss</p> <p>PHP Pear Dev : http://news.php.net/group.php?group=php.pear.dev&format=rss</p> <p>Planet PHP : http://www.planet-php.org/rss/</p> </body> </html>
xsl/advanced_stylesheet.php xsl/advanced_stylesheet.php
function initReader($url) { $GLOBALS['reader'] = new XMLReader(); if ($GLOBALS['reader']->open($url)) { while ($GLOBALS['reader']->read() && $GLOBALS['reader']->name != 'item') { } if ($GLOBALS['reader']->name == 'item') return 1; } $GLOBALS['reader'] = NULL; return 0; } function readNextItem() { if ($GLOBALS['reader'] == NULL) return NULL; if ($GLOBALS['beingProc']) $GLOBALS['reader']->next('item'); else $GLOBALS['beingProc'] = TRUE; if ($GLOBALS['reader']->name == 'item') return $GLOBALS['reader']->expand(); return NULL; }
xsl/advanced_stylesheet.php xsl/advanced_stylesheet.php
$beingProc = FALSE; $reader = NULL; /* Load Stylesheet */ $stylesheet = new DOMDocument(); $stylesheet->load('advanced_stylesheet.xsl'); /* Create XSL Processor */ $proc = new xsltprocessor(); $proc->importStylesheet($stylesheet); /* Load XML Data */ $dom = new DOMDocument(); $dom->load('sites.xml'); $proc->setParameter(NULL, 'siteid', 'php-gen'); $proc->registerPHPFunctions('initReader'); $proc->registerPHPFunctions('readNextItem'); print $proc->transformToXML($dom); /* END */
xsl/advanced_stylesheet.xsl xsl/advanced_stylesheet.xsl
<?xml version="1.0"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:php="http://php.net/xsl" version="1.0"> <xsl:output method="html"/> <xsl:param name="siteid" select="0" /> <xsl:template match="/"> <html><body> <xsl:apply-templates select="id($siteid)"/> </body></html> </xsl:template> <xsl:template match="/sites/site"> <xsl:variable name="itemnum" select="php:functionString('initReader', ./url)" /> <xsl:if test="number($itemnum) > 0"> <xsl:call-template name="itemproc" /> </xsl:if> </xsl:template>
xsl/advanced_stylesheet.xsl xsl/advanced_stylesheet.xsl
<xsl:template match="item"> <p> Title: <b><xsl:value-of select="./title" /></b><br/><br/> URL: <xsl:value-of select="./link" /><br/> Published: <xsl:value-of select="./pubDate" /><br/> </p> </xsl:template> <xsl:template name="itemproc"> <xsl:variable name="nodeset" select="php:functionString('readNextItem')" /> <xsl:if test="boolean($nodeset)"> <xsl:apply-templates select="$nodeset"/> <xsl:call-template name="itemproc" /> </xsl:if> </xsl:template> </xsl:stylesheet>
Results viewed through a browser Results viewed through a browser xsl/advanced_stylesheet.html xsl/advanced_stylesheet.html
Title: Re: Spreadsheet Writer URL: http://news.php.net/php.general/241446 Published: Thu, 07 Sep 2006 13:52:09 –0400 Title: Re: Spreadsheet Writer URL: http://news.php.net/php.general/241447 Published: Thu, 07 Sep 2006 13:52:09 -0400 Title: Re: Spreadsheet Writer URL: http://news.php.net/php.general/241448 Published: Thu, 07 Sep 2006 13:52:09 -0400
http://www.cdatazone.org/talks/quebec_2007/workshop.zip rrichards@ctindustries.net