php5 and xmlʾÀý

http://trash.chregu.tv/phpconf2003/examples/
PHP5µÄXMLÐÂÌØÐÔ
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PHP5µÄXML
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SAX
SAXµÄÈ«³ÆÊÇSimple API for XML£¬ËuÊÇÓÃÓÚ½aÎoXMLÎĵµµÄ½Ó¿Ú£¬ÊÇ»uÓڻص÷ÐÎʽµÄ¡£´ÓPHP3¿ªÊ¼¾ÍÒѾ­Ö§³ÖÁËSAX£¬µ½ÏÖÔÚҲûÓÐÌ«´oµÄ±a»¯¡£ÔÚPHP5ÖУ¬API½Ó¿Ú²¢Ã»Óиıa£¬ËuÒÔÄaµÄ´uÂeÈÔÈ»¿ÉÒÔÔËÐС£Î¨Ò»²»Í¬µÄÊÇËu²»ÔÙ»uÓÚEXPAT¿a£¬¶øÊÇ»uÓÚLIBXML2¿a¡£
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DOM
DOM (Îĵµ¶ÔÏoÄ£ÐÍ)ÊÇÓÉW3CÖƶ¨µÄÒ»Ì×ÃÎÊXMLÎĵµÊ÷µÄ±e×¼¡£ÔÚPHP4¿ÉÒÔʹÓÃDOMXMLÀ´¶Ô´Ë½øÐвÙ×÷£¬DOMXMLµÄ×iÖ÷ÒªÎÊÌaÊÇËu²»uºÏ±e×¼µÄÃuÃu½¨¡£¶øÇÒÔںܳ¤Ò»¶Îʱ¼aÄÚ»¹´aeÔÚÄÚ´aeйÂ(C)ÎÊÌa£¨PHP4.3ÒѾ­ÐÞ¸´ÁËÕa¸oÎÊÌa£(C)¡£
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¶ÁÈ¡DOM
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ÔÚÕaƪÎÄÕµĴo¶aÊýÀý×ÓÖÐÎÒÃǽ«Ê¹ÓÃͬһ¸oXMLÎļþ£¬zend.comÉÏÓÐdz£¼oµ¥µÄRSS°ae±¾¡£½«ÏÂÃaeµÄÎı¾Õ³Ìuµ½Ò»¸oÎı¾ÎļþÖв¢±£´aeΪarticles.xml¡£
http://www.zend.com/zend/week/week172.php
http://www.zend.com/zend/tut/tut-hatwar3.php
Òª½«Õa¸oÀý×ÓÔØÈeµ½Ò»¸oDOM¶ÔÏo£¬Ê×ÏÈÒª´´½¨Ò»¸oDOMDocument¶ÔÏo£¬È»ºoÔØÈeXMLÎļþ¡£
$dom = new DomDocument();
$dom->load("articles.xml");
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$dom->load("file:///articles.xml");
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Èç¹uÄaÏe½«XMLÎĵµÊa³oµ½a¯ÀÀÆ÷»o×oΪ±e×¼±e³o£¬Ê¹Óãº
print $dom->saveXML();
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print $dom->save("newfile.xml");
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µ±È»Õa¸oÀý×ÓûÓÐÌ«¶aµÄ¹¦ÄÜ£¬ÈÃÎÒÃÇÀ´×oÐ(C)¸uÓÐÓõġ£ÎÒÃÇÀ´È¡µÃËuÓеÄtitleÔªËØ¡£Óкܶa½¨¿ÉÒÔ°iµ½£¬×i¼oµ¥µÄ¾ÍÊÇʹÓÃgetElementsByTagName($tagname):
$titles = $dom->getElementsByTagName("title");
foreach($titles as $node) {
print $node->textContent . "\n";
}
textContentÊoÐÔ²¢²»ÊÇW3C±e×¼£¬Ëu¿ÉÒÔÈÃÎÒÃǺܽ±aµÄ¿iËÙ¶ÁÈ¡Ò»¸oÔªËصÄËuÓÐÎı¾½Úµa£¬Ê¹ÓÃW3CµÄ±e×¼¶ÁÈ¡ÊÇÏÂÃaeÕaÑu£º
$node->firstChild->data;
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ÁiÍaÒ»¸oҪעÒaµÄÎÊÌaÊÇgetElementsByTagName()µ»ØÒ»¸oDomNodeList,¶ÔÏo£¬¶ø²»ÊÇÏñPHP4ÖÐget_elements_by_tagname()ÄÇÑuµ»ØÒ»¸oÊý×e£¬µ«ÊÇÕýÏñÄaÔÚÕa¸oÀý×ÓÖп´µ½µÄÄÇÑu£¬Äa¿ÉÒÔʹÓÃforeachÓi¾aÇaËɵıeÀuËu¡£ÄaÒ²¿ÉÒÔÖ±½ÓʹÓÃ$titles->item(0)À´ÃÎʽaµa¡£¸Ã½¨½«µ»ØµÚÒ»¸otitleÔªËØ¡£
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foreach ($dom->documentElement->childNodes as $articles) {
//Èç¹u½ÚµaÊÇÒ»¸oÔªËØ(nodeType == 1)²¢ÇÒÃu×ÖÊÇitem¾Í¼ÌÐøÑ­»
if ($articles->nodeType == 1 && $articles->nodeName == "item") {
foreach ($articles->childNodes as $item) {
//Èç¹u½ÚµaÊÇÒ»¸oÔªËØ£¬²¢ÇÒÃu×ÖÊÇtitle¾Í´oÓ¡Ëu.
if ($item->nodeType == 1 && $item->nodeName == "title") {
print $item->textContent . "\n";
}
}
}
}
XPath
XPaht ¾ÍÏñÊÇXMLµÄSQL£¬Ê¹ÓÃXPathÄa¿ÉÒÔÔÚÒ»¸oXMLÎĵµÖвeѯuºÏÒ»Ð(C)ģʽÓi¨µÄÌض¨½aµa¡£ÏeʹÓÃXPath»ñµÃËuÓÐtitle½aµa£¬Ö»ÐeÒªÕaô×o£º
$xp = new domxpath($dom);
$titles = $xp->query("/articles/item/title");
foreach ($titles as $node) {
print $node->textContent . "\n";
}
?>
ÕaÑuºÍʹÓÃgetElementsByTagName()½¨²i²»¶a£¬µ«ÊÇXpathҪǿ´oµÄ¶a£¬ÀýÈ磬Èç¹uÎÒÃÇÓÐÒ»¸otitleÔªËØÊÇarticleµÄ×ÓÔªËØ(¶ø²»ÊÇitemµÄ×ÓÔªËØ)£¬getElementsByTagName()¾Í»a½«Ëuµ»Ø¡£¶øʹÓÃ/articles/item/titleÓi¨£¬ÎÒÃÇÖ»»aµÃµ½ÔÚÖ¸¶¨Éi¶ÈºÍλÖõÄtitleÔªËØ¡£ÕaÖ»ÊÇÒ»¸o¼oµ¥µÄÀý×Ó£¬ÔÙÉiÈeÒ»µa¿ÉÄÜÊÇÕaÑu£º
/articles/item[position() = 1]/title µ»ØµÚÒ»¸oitemÔªËصÄËuÓÐ
/articles/item/title[@id = '23'] µ»ØËuÓк¬ÓÐidÊoÐÔ²¢ÇÒֵΪ23µÄtitle
/articles//title µ»ØËuÓÐarticlesÔªËØÏÂÃaeµÄtitle(ÒeÕß×¢£º//´u±iÈÎÒaÉi¶È)
ÄaÒ²¿ÉÒÔ²eѯº¬ÓÐÌØÊaÐÖµÜÔªËصĵa£¬º¬ÓÐÌØÊaÎı¾ÄÚÈݵÄÔªËØ£¬»oÕßʹÓÃÃuÃu¿Õ¼aµÈµÈ¡£Èç¹uÄa±ØÐe´oÁ¿µÄ²eѯXMLÎĵµ£¬Êʵ±µÄѧϰʹÓÃXPath»a½ÚÊ¡ÄaºÜ¶aʱ¼a£¬ËuʹÓüoµ¥£¬Ö´ÐÐËٶȿi£¬±È±e×¼µÄDOMÐeÒª¸uÉٵĴuÂe¡£
ÏoDOMÖÐдÈeÊý¾Ý
Îĵµ¶ÔÏoÄ£ÐͲ¢²»ÊÇÖ»ÄܶÁÈ¡ºÍ²eѯ£¬ÄaÒ²¿ÉÒÔ²Ù×÷ºÍдÈe¡£(DOM±e×¼ÓеaÈß³¤£¬ÒoΪ±aдÕßÏe¾¡Á¿Ö§³ÖÄܹ»ÏeÏñµ½µÄÿһ¸o»¾³£¬µ«ÊÇËu¹¤×÷µÄdz£ºÃ)¡£¿´¿´ÏÂÃaeÕa¸oÀý×Ó£¬ËuÔÚÎÒÃǵÄarticle.xmlÎļþÖÐÌi¼ÓÁËÒ»¸oÐÂÔªËØ¡£
$item = $dom->createElement("item");
$title = $dom->createElement("title");
$titletext = $dom->createTextNode("XML in PHP5");
$title->appendChild($titletext);
$item->appendChild($title);
$dom->documentElement->appendChild($item);
print $dom->saveXML();
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À(C)Õ¹Àa(class)
ºÃÁË£¬ÉÏÃaeµÄÀý×Ó¶¼¿ÉÒÔÔÚPHP4ÏÂÃaeÓÃDOMXMLÀ(C)Õ¹À´×o(Ö»ÊÇAPIÓÐÒ»Ð(C)²»Í¬)£¬Äܹ»×Ô¼ºÀ(C)Õ¹DOMÀaÊÇPHP5µÄÒ»¸oÐÂÌØÐÔ£¬ÕaʹµÃÊeд¸u¶a¿É¶ÁÐÔÇ¿µÄ´uÂe±aµÃ¿ÉÄÜ¡£ÏÂÃaeÊÇÓÃDOMDocumentÀaÖØÐÂдµÄÕu¸oÀý×Ó£º
class Articles extends DomDocument {
function construct() {
//±ØÐeµ÷ÓÃ!
parent::construct();
}
function addArticle($title) {
$item = $this->createElement("item");
$titlespace = $this->createElement("title");
$titletext = $this->createTextNode($title);
$titlespace->appendChild($titletext);
$item->appendChild($titlespace);
$this->documentElement->appendChild($item);
}
}
$dom = new Articles();
$dom->load("articles.xml");
$dom->addArticle("XML in PHP5");
print $dom->save("newfile.xml");
HTML
PHP5ÖÐÒ»¸o¾­³£²»±»×¢Òaµ½µÄÌØÐÔÊÇlibxml2¿a¶ÔHTMLµÄÖ§³Ö£¬Äa²»½o¿ÉÒÔʹÓÃDOMÀ(C)Õ¹ÔØÈe½a¹¹Á¼ºÃ(well-formed)µÄXMLÎĵµ£¬»¹¿ÉÒÔÔØÈeǽa¹¹Á¼ºÃµÄ(not-well-formed)HTMLÎĵµ£¬°ÑËuµ±×o±e×¼µÄDOMDocument¶ÔÏo£¬Ê¹ÓÃËuÓÐÄÜÓõĽ¨ºÍÌØÐÔ£¬±ÈÈçXPathºÍSimpleXML¡£
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$dom = new DomDocument();
$dom->loadHTMLFile("http://www.php.net/");
$title = $dom->getElementsByTagName("title");
print $title->item(0)->textContent;
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$dom->validate('articles.dtd');
$dom->relaxNGValidate('articles.rng');
$dom->schemaValidate('articles.xsd');
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SimpleXML
SimpleXML ÊÇPHPµÄXML¼Ò×aÖÐ×iºoÒ»¸o±»¼ÓÈeµÄ³ÉÔ±£¬¼ÓÈeSimpleXMLÀ(C)Õ¹µÄÄ¿µÄÊÇΪÁËÌa¹(C)Ò»¸oʹÓñe×¼¶ÔÏoÊoÐԺ͵u´uÆ÷ÃÎÊXMLÎĵµµÄ¸u¼oµ¥µÄ½¨¡£¸ÃÀ(C)չûÓÐÌ«¶aµÄ½¨£¬ËaÈ»Èç´ËËu»¹ÊÇÏaµ±Ç¿´oµÄ¡£´ÓÎÒÃǵÄÎĵµµÄÈ¡µÃËuÓÐtitle½Úµa±ÈÔ­À´ÐeÒª¸uÉٵĴuÂe¡£
$sxe = simplexml_load_file("articles.xml");
foreach($sxe->item as $item) {
print $item->title ."\n";
}
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foreach($sxe->xpath('/articles/item/title') as $item) {
print $item . "\n";
}
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$sxe->item->title = "XML in PHP5 "; //titleÔªËصÄÐÂÄÚÈÝ¡£
$sxe->item->title['id'] = 34; // titleÔªËصÄÐÂÊoÐÔ¡£
$xmlString = $sxe->asXML(); // ½«SimpleXML¶ÔÏo×oΪÐoÁл¯µÄXML×Öu´®µ»Ø
print $xmlString;
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$sxe = simplexml_import_dom($dom);
$dom = dom_import_simplexml($sxe);
XSLT
XSLTÊÇÓÃÀ´½«XMLÎĵµ×ª»»ÎªÆaËuXMLÎĵµµÄÓiÑÔ£¬XSLT±¾ÉiÊÇÓÃXML±aдµÄ£¬ÊoÓÚ¹¦ÄÜÐÔÓiÑÔ¼Ò×a£¬ÔÚ³ÌÐo´¦ÀiÉϺÍÃae¶Ô¶ÔÏoÓiÑÔ£¨ÏñPHP£(C)ÓÐËu²»Í¬¡£PHP4ÖÐÓжþÖÖXSLT´¦ÀiÆ÷£ºSablotron£¨ÔÚ¹aºÊ¹ÓõÄXSLTÀ(C)Õ¹ÖУ(C)ºÍLibxslt£¨ÔÚdomxmlÀ(C)Õ¹ÖУ(C)£¬ÕaÁ½ÖÖAPI²»»¥Ïa¼aeÈÝ£¬²¢ÇÒʹÓý¨Ò²²»Ïaͬ¡£PHP5Ö»Ö§³Ölibxslt´¦ÀiÆ÷£¬Ö®ËuÒÔÑ¡ÔñËuÊÇÒoΪËuÊÇ»uÓÚLibxml2µÄ£¬Òo´ËÒ²¸uuºÏPHP5µÄXML¸ÅÄi¡£
ÀiÂÛÉϽ«Sablotron°o¶¨µ½PHP5ÉÏÒ²ÊÇ¿ÉÄܵģ¬µ«ÊDz»ÐÒµÄÊÇûÈËÀ´×o¡£Òo´Ë£¬Èç¹uÄaÕýÔÚʹÓÃSablotron£¬Äa²»µÃ²»ÔÚPHP5ÖÐÇл»µ½libxslt´¦ÀiÆ÷¡£Libxslt ÊÇ´øÓÐJavascriptÒi³£´¦ÀiÖ§³ÖµÄSablotron£¬ÉoÖÁ¿ÉÒÔʹÓÃPHPÇ¿´oµÄÊý¾ÝÁ÷À´ÖØÐÂʵÏÖSablotron¶ÀÓеļƻ®´¦Ài£¨scheme handlers£(C)¡£´ËÍa£¬libxslt ÊÇ ×i¿iµÄXSLT´¦ÀiÆ÷Ö®Ò»£¬ËuÒÔÄa»¹Ãaѵõ½ÁËËٶȵÄÌaÉý¡££¨Ö´ÐÐËÙ¶ÈÊÇSablotronµÄ¶þ±¶£(C)¡£
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/ ½«XMLºÍXSLÎĵµÔØÈeµ½DOMDocument¶ÔÏo/
$xsl = new DomDocument();
$xsl->load("articles.xsl");
$inputdom = new DomDocument();
$inputdom->load("articles.xml");
/ ´´½¨XSLT´¦ÀiÆ÷£¬²¢µ¼ÈeÑuʽ±i/
$proc = new XsltProcessor();
$xsl = $proc->importStylesheet($xsl);
$proc->setParameter(null, "titles", "Titles");
/ ת»»²¢Êa³oXMLÎĵµ /
$newdom = $proc->transformToDoc($inputdom);
print $newdom->saveXML();
?>
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function dateLang () {
return strftime("%A");
}
$xsl = new DomDocument();
$xsl->load("datetime.xsl");
$inputdom = new DomDocument();
$inputdom->load("today.xml");
$proc = new XsltProcessor();
$proc->registerPhpFunctions();
// ÔØÈeÎĵµ²¢Ê¹ÓÃ$xslÀ´´¦Ài
$xsl = $proc->importStylesheet($xsl);
/ ת»»²¢Êa³oXMLÎĵµ /
$newdom = $proc->transformToDoc($inputdom);
print $newdom->saveXML();
?>
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PHP 4 Ïa¹Ø
Domxml À(C)Õ¹: http://www.php.net/domxml/
Sablotron À(C)Õ¹: http://www.php.net/xslt/
Libxslt: http://www.php.net/manual/en/functi...-stylesheet.php
PHP 5 Ïa¹Ø
SimpleXML: http://www.php.net/simplexml/
Streams: http://www.php.net/manual/en/ref.stream.php
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DOM: http://www.w3.org/DOM
XSLT: http://www.w3.org/TR/xslt
XPath: http://www.w3.org/TR/xpath
XML Schema: http://www.w3.org/XML/Schema
RelaxNG: http://relaxng.org/
Xinclude: http://www.w3.org/TR/xinclude/
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Libxml2, the underlying library: http://xmlsoft.org/
Trang, a Schema/RelaxNG/etc converter: http://www.thaiopensource.com/relaxng/trang.html
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