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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

  1. XPath Function Example XPath Function Example 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>

  2. XPath and Namespaces XPath and Namespaces xpath/namespaces.php xpath/namespaces.php //title //t:title Empty NodeSet <t:title>French I</t:title> <t:title>French II</t:title> //defns Empty NodeSet //*[local-name()="defns"] <defns xmlns="urn:default">content</defns> <courses xmlns:t="http://www.example.com/title"> Reference: <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>

  3. PHP and XML PHP and XML � PHP 5 introduced numerous interfaces for PHP 5 introduced numerous interfaces for working with XML working with XML � The libxml2 library (http://www.xmlsoft.org/) The libxml2 library (http://www.xmlsoft.org/) was chosen to provide XML support was chosen to provide XML support � The sister library libxslt provides XSLT support The sister library libxslt provides XSLT support � I/O is handled via PHP streams I/O is handled via PHP streams � ext/domxml was removed in favor of ext/dom ext/domxml was removed in favor of ext/dom

  4. XML Entensions for PHP 5 XML Entensions for PHP 5 � 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

  5. Libxml Libxml � Contains common functionality shared across Contains common functionality shared across extensions. extensions. � Defines constants to modify parse time Defines constants to modify parse time behavior. behavior. � Provides access to streams context. Provides access to streams context. � Allows modification of error handling Allows modification of error handling behavior for XML based extensions. behavior for XML based extensions.

  6. Libxml: Parser Options Libxml: Parser Options LIBXML_NOENT Substitute entities with replacement content LIBXML_DTDLOAD Load subsets but do not perform validation LIBXML_DTDATTR Create defaulted attributes defined in DTD LIBXML_DTDVALID Loads subsets and perform validation LIBXML_NOERROR Suppress parsing errors from libxml2 LIBXML_NOWARNING Suppress parser warnings from libxml2 LIBXML_NOBLANKS Remove insignificant whitespace on parsing LIBXML_XINCLUDE Perform XIncludes during parsing LIBXML_NOCDATA Merge CDATA nodes in Text nodes LIBXML_NONET Disable network access when loading

  7. Libxml: Error Handling Libxml: Error Handling 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 )

  8. Libxml: LibXMLError Libxml: LibXMLError 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

  9. LibXMLError Example LibXMLError Example 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"; } ?>

  10. LibXMLError Result LibXMLError Result 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: object(LibXMLError)#2 (6) { object(LibXMLError)#2 (6) { ["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) } }

  11. Libxml: Stream Context Libxml: Stream Context $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');

  12. Preparing for Unicode in PHP 6 Preparing for Unicode in PHP 6 � XML extensions are unicode ready for PHP 6 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 unicode strings. unicode strings. AND � 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 Binary strings are required for Loading and Saving String String based XML documents based XML documents Saving � 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

  13. Forward Compatibility Forward Compatibility $xml = (binary) (binary) "<root>My Document</root>"; "<root>My Document</root>"; $xml = $sxe = simplexml_load_string($xml); $sxe = simplexml_load_string($xml); $xml = b $xml = 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());

  14. SimpleXML SimpleXML � 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().

  15. SimpleXML: Consuming Yahoo WebSearch SimpleXML: Consuming Yahoo WebSearch simplexml/yahoo_websearch_results.xml simplexml/yahoo_websearch_results.xml <ResultSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" <ResultSet 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-&amp;gt;createText. . .</Summary> <Summary>titletext = $dom-&amp;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>

  16. SimpleXML: Consuming Yahoo WebSearch SimpleXML: Consuming Yahoo WebSearch 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"; } } } }

  17. SimpleXML: Consuming Yahoo WebSearch SimpleXML: Consuming Yahoo WebSearch 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

  18. SimpleXML: Namespaces SimpleXML: Namespaces simplexml/sxe_ns_books.php simplexml/sxe_ns_books.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"> <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; } }

  19. SimpleXML: Namespaces SimpleXML: Namespaces Results Results To Kill a Mockingbird To Kill a Mockingbird Question: Question: What happened to the other book title? What happened to the other book title?

  20. SimpleXML: Namespaces SimpleXML: Namespaces simplexml/sxe_ns_books_prefix.php simplexml/sxe_ns_books_prefix.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"> <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"; } }

  21. SimpleXML: Namespaces SimpleXML: Namespaces Results Results Grapes of Wrath Grapes of Wrath Only book elements within the specified Only book elements within the specified namespace are used in the results namespace are used in the results

  22. SimpleXML: Xpath SimpleXML: Xpath 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_ns_books.xml sxe_ns_books.xml'); '); $sxe = simplexml_load_file(' $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";

  23. SimpleXML: XPath Results SimpleXML: XPath Results Book Title: Book Title: Book Title: Grapes of Wrath Grapes of Wrath Book Title: Why doesn't the title "To Kill a Mockingbird" To Kill a Mockingbird" Why doesn't the title " get printed? get printed?

  24. SimpleXML: Xpath SimpleXML: Xpath 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_ns_books.xml sxe_ns_books.xml'); '); $sxe = simplexml_load_file(' $sxe->registerXPathNamespace("ec", " http://www.example.com/ExteralClassics $sxe->registerXPathNamespace("ec", " 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"; Book Title: To Kill a Mockingbird Book Title: To Kill a Mockingbird

  25. SimpleXML: XPath Context SimpleXML: XPath Context 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: $

  26. SimpleXML: XPath Context SimpleXML: XPath Context 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]; /* GOTCHA TO BE AWARE OF*/ /* GOTCHA TO BE AWARE OF*/ $book = $books->book[0]; $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

  27. SimpleXML: Write some data SimpleXML: Write some data $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>

  28. SimpleXML: Reading Data can SimpleXML: Reading Data can Create Data? Create Data? ISSUE IS RESOLVED IN PHP 5.2.1+ ISSUE IS RESOLVED IN PHP 5.2.1+ $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>

  29. SimpleXML: Advanced Editing SimpleXML: Advanced Editing 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" />', 'webservice' 'webservice' ); ); $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->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();

  30. SimpleXML: Advanced Editing SimpleXML: Advanced Editing Results Results <?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>

  31. SimpleXML: Advanced Editing SimpleXML: Advanced Editing PHP 5.1.3 PHP 5.1.3 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();

  32. SimpleXML: Removing data SimpleXML: Removing data 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(); ?> ?>

  33. SimpleXML: Removing data SimpleXML: Removing data 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>

  34. SDO (SDO_DAS_XML) SDO (SDO_DAS_XML) � 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

  35. SDO: Consuming Yahoo ContextSearch SDO: Consuming Yahoo ContextSearch sdo/yahoo_search_results.xml sdo/yahoo_search_results.xml <ResultSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" <ResultSet 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-&amp;gt;createText. . .</Summary> <Summary>titletext = $dom-&amp;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>

  36. SDO: Consuming Yahoo ContextSearch SDO: Consuming Yahoo ContextSearch sdo/yahoo_search.php /yahoo_search.php sdo /* 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"; } } } }

  37. SDO: Consuming Yahoo ContextSearch SDO: Consuming Yahoo ContextSearch sdo/yahoo_search2.php /yahoo_search2.php sdo /* 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 ( $sxe->totalResultsReturned if ( $sxe->totalResultsReturned > 0) { > 0) { /* Loop through results and print title, url and modification date */ /* Loop through results and print title, url and modification date */ foreach ($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"; } } } }

  38. SDO: Consuming Yahoo ContextSearch SDO: Consuming Yahoo ContextSearch 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

  39. SDO: XML Editing SDO: XML Editing 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>

  40. SDO: XML Editing SDO: XML Editing 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>

  41. SDO: XML Editing SDO: XML Editing 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

  42. DOM DOM � 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

  43. DOMNode Classes DOMNode Classes � DOMDocument � DOMEntityReference DOMDocument DOMEntityReference � DOMElement � DOMProcessingInstruction DOMElement DOMProcessingInstruction � DOMAttr � DOMNameSpaceNode DOMAttr DOMNameSpaceNode � DOMComment � DOMDocumentFragment DOMComment DOMDocumentFragment � DOMDocumentType � DOMCharacterData DOMDocumentType DOMCharacterData � DOMNotation � DOMText DOMNotation DOMText � DOMEntity � DOMCdataSection DOMEntity DOMCdataSection Additional Classes � DOMNodeList � DOMException � DOMNamedNodeMap � DOMImplementation � DOMXPath

  44. DOM: Sample Document DOM: Sample Document <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>

  45. DOM:Document Navigation DOM:Document Navigation 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

  46. DOM: Navigation Optimized DOM: Navigation Optimized 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"; } }

  47. DOM: Creating a Simple Tree DOM: Creating a Simple Tree 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);

  48. DOM: Simple Tree Output DOM: Simple Tree Output <?xml version="1.0"?> <!--My first Document--> <tree att1="att1 value" att2="att2 value"> <child><![CDATA[special chars: & < > ']]></child> <?php echo "Hello World!"?> </tree>

  49. DOM: Modification DOM: Modification 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');

  50. DOM: Document Modification DOM: Document Modification 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>

  51. DOM: Document Modification DOM: Document Modification /* Remove all children of an element */ /* Remove all children of an element */ /* These will work */ $children = $entry->childNodes; while ($entry->hasChildNodes()) { while ($entry->hasChildNodes()) { $length = $children->length - 1; $entry->removeChild($entry->firstChild); $entry->removeChild($entry->firstChild); } } for ($x=$length; $x >=0; $x--) { OR OR $entry->removeChild($children->item($x)); } $node = $entry->lastChild; $node = $entry->lastChild; while($node) { while($node) { OR $prev = $node->previousSibling; $prev = $node->previousSibling; $entry->removeChild($node); $entry->removeChild($node); $elem = $entry->cloneNode(FALSE); $node = $prev; $node = $prev; $entry->parentNode->replaceChild($elem, } } $entry); /* This Will Not Work! */ /* This Will Not Work! */ foreach($entry->childNodes AS $node) { foreach($entry->childNodes AS $node) { $entry->removeChild($node); $entry->removeChild($node); } }

  52. DOM and Namespaces DOM and Namespaces <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>

  53. Dom and Namepsaces Dom and Namepsaces 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(new DOMElement("xsd:complexContent", NULL, new DOMElement("xsd:complexContent", NULL, $content = $root->appendChild( SCHEMA_NS)); ); SCHEMA_NS) $restriction = $content->appendChild(new DOMElement("xsd:restriction", NULL, new DOMElement("xsd:restriction", NULL, $restriction = $content->appendChild( SCHEMA_NS)); SCHEMA_NS) ); $restriction->setAttribute("base", "soapenc:Array"); $restriction->setAttribute("base", "soapenc:Array"); $attribute = $restriction->appendChild(new DOMElement("xsd:attribute", NULL, new DOMElement("xsd:attribute", NULL, $attribute = $restriction->appendChild( 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[]");

  54. DOM and Xpath DOM and Xpath 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>

  55. DOM and Xpath DOM and Xpath 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> $xpath = new DOMXPath($doc); $xpath = new DOMXPath($doc); $nodelist = $xpath->query query("//bk:name"); ("//bk:name"); $nodelist = $xpath-> print "Book Title: ".$nodelist->item($nodelist->length - 1)->textContent."\n"; print "Book Title: ".$nodelist->item($nodelist->length - 1)->textContent."\n"; $inventory = $xpath->evaluate evaluate("sum(//@qty)"); ("sum(//@qty)"); $inventory = $xpath-> print "Total Books: ".$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->query query("//ec:book"); ("//ec:book"); $nodelist = $xpath-> $book = $nodelist->item(0); $book = $nodelist->item(0); $inventory = $xpath->evaluate evaluate("sum(./@qty)", ("sum(./@qty)", $book $book); ); $inventory = $xpath-> print "Total Books: ".$inventory."\n"; print "Total Books: ".$inventory."\n";

  56. DOM and Xpath Results DOM and Xpath Results Book Title: Grapes of Wrath Book Title: Grapes of Wrath Total Books: 58 Total Books: 58 Total Books: 33 Total Books: 33

  57. Performing Validation Performing Validation 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'); $doc->load('course-id.xml'); if ($doc->validate() $doc->validate()) { print " Document Is Valid\n"; } ) { print " Document Is Valid\n"; } if ( $doc->load('course.xml'); $doc->load('course.xml'); print "\nXML Schema Validation:\n"; print "\nXML Schema Validation:\n"; if ($doc->schemaValidate('course.xsd') $doc->schemaValidate('course.xsd')) { print " Document is valid\n"; } ) { print " Document is valid\n"; } if ( $doc->load('course.xml'); $doc->load('course.xml'); print "\nRelaxNG Validation:\n"; print "\nRelaxNG Validation:\n"; if ($doc->relaxNGValidate('course.rng') $doc->relaxNGValidate('course.rng')) { print " Document is valid\n"; ) { print " Document is valid\n"; if ( } }

  58. Performing Validation Results Performing Validation Results 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

  59. Extending DOM Classes Extending DOM Classes � Overriding the constructor requires the parent Overriding the constructor requires the parent constructor to be called. constructor to be called. � Properties built into the DOM classes cannot Properties built into the DOM classes cannot be overridden. be overridden. � Methods built into the DOM classes may can Methods built into the DOM classes may can be overridden. be overridden. � The lifespan of an extended object is that of The lifespan of an extended object is that of the object itself. the object itself.

  60. Extending DOM Classes Extending DOM Classes dom/extending/ extending.php dom/extending/ 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();

  61. DOM Object Scope DOM Object Scope 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 = $doc->appendChild(new customElement("custom", "element")); = $doc->appendChild(new customElement("custom", "element")); $myelement print "After Append: ".get_class($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

  62. DOM: registerNodeClass DOM: registerNodeClass 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 = $doc->appendChild($doc->createElement("custom", "element")); = $doc->appendChild($doc->createElement("custom", "element")); $myelement print "After Append: ".get_class($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

  63. DOM:Common Issues DOM:Common Issues � 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

  64. XMLReader XMLReader � 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

  65. XMLReader: Simple Example XMLReader: Simple Example 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>

  66. XMLReader: Simple Example XMLReader: Simple Example 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"; } } } }

  67. XMLReader: Simple Example XMLReader: Simple Example 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: http://www.example.com/namespace-a Namespace URI for Element: 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();

  68. XMLReader: Consuming Yahoo XMLReader: Consuming Yahoo Shopping Shopping <?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>

  69. XMLReader: Consuming Yahoo Shopping XMLReader: Consuming Yahoo Shopping 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'));

  70. XMLReader: Consuming Yahoo Shopping XMLReader: Consuming Yahoo Shopping xmlreader/rest_yahoo_shopping.php xmlreader/rest_yahoo_shopping.php function getTextValue($reader) { function getTextValue($reader) { if ($reader->nodeType != if ($reader->nodeType != XMLReader::ELEMENT || $reader->isEmptyElement XMLReader::ELEMENT || $reader->isEmptyElement || ($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(); } } }

  71. XMLReader: Consuming Yahoo Shopping XMLReader: Consuming Yahoo Shopping 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(); } } } }

  72. XMLReader: Consuming Yahoo Shopping XMLReader: Consuming Yahoo Shopping 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 or office users to connect their computers to a cable or DSL modem and or office users to connect their computers to a cable or DSL modem and 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 of sharing files without fear of intruders hacking into the network. </P> of sharing files without fear of intruders hacking into the network. </P>

  73. XMLReader: DTD Validation XMLReader: DTD Validation 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>

  74. XMLReader: DTD Validation XMLReader: DTD Validation 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; } }

  75. XMLReader: DTD Validation XMLReader: DTD Validation 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 on line 2 on line 2 NOT VALID NOT VALID Element section was declared #PCDATA but contains non Element section was declared #PCDATA but contains non text nodes text nodes

  76. XMLReader: Relax NG Validation XMLReader: Relax NG Validation 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>

  77. XMLReader: Relax NG Validation XMLReader: Relax NG Validation 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; } }

  78. XMLReader: Relax NG Validation XMLReader: Relax NG Validation 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 on line 2 on line 2 NOT VALID NOT VALID Did not expect element title there Did not expect element title there

  79. XMLReader: XML Schema Validation XMLReader: XML Schema Validation 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>

  80. XMLReader: XML Schema Validation XMLReader: XML Schema Validation 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

  81. XMLReader: XML Schema Validation XMLReader: XML Schema Validation 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 on line 2 on line 2 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.

  82. Tree Parsers Tree Parsers � Pros: 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: 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

  83. Streaming Parsers Streaming Parsers � Pros: 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: Cons: � Minimal to no navigation support (forward only) Minimal to no navigation support (forward only) � No document editing capabilities No document editing capabilities

  84. Raw Test Data Raw Test Data <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: DOM SimpleXML ext/xml XMLReader 85.6MB 85.6MB 26KB 177KB 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: DOM SimpleXML ext/xml XMLReader 6.623 6.583 0.930 0.238

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