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php´¦Àíxml


php¶ÔxmlÎļþÖнڵãµÄɾ³ý\±à¼­
ʹÓÃgetElementsByTagName()·½·¨É¾³ý\±à¼­XML½Úµã
Èý¸öÎļþ£º
1.root.xml
2.remove.php —— ɾ³ý½Úµã
3.replace.php —— Ìæ»»½Úµã
root.xml
<root>
<child1>child1 content</child1>
<child2>child2 content</child2>
<child3>child3 content</child3>
</root>
<root>
<child1>child1 content</child1>
<child2>child2 content</child2>
<child3>child3 content</child3>
</root>
remove.php
<?php
$xml_str = file_get_contents("root.xml"); //½«root.xmlÎļþÖеÄÄÚÈݶÁÈëÒ»¸ö×Ö·û´®
$doc = DOMDocument::loadXML($xml_str);  //ÔØÈëÕâ¸ö×Ö·û´®
//È¡µÃÔªËØ$child2
$root = $doc->documentElement;
$child2 = $root->getElementsByTagName("child2")->item(0);
//ɾ³ý$child2¶ÔÏó
$root->removeChild($child2);
//±£´æÎļþ
$doc->formatOutput = true;
$doc->saveXML();
$doc->save("root.xml");
?>
<?php
$xml_str = file_get_contents("root.xml"); //½«root.xmlÎļþÖеÄÄÚÈݶÁÈëÒ»¸ö×Ö·û´®
$doc = DOMDocument::loadXML($xml_str); //ÔØÈëÕâ¸ö×Ö·û´®
//È¡µÃÔªËØ$child2
$root = $doc->documentElement;
$child2 = $root->getElementsByTagName("child2")->item(0);
//ɾ³ý$child2¶ÔÏó
$root->removeChild($child2);
//±£´æÎļþ
$doc->formatOutput = true;
$doc->saveXML();
$doc->save("root.xml");
?>
replace.php
<?php
$xml_str = file_get_contents("root.xml"); //½«root.xmlÎļþÖеÄÄÚÈݶÁÈëÒ»¸ö×Ö·û´®
$doc = DOMDocument::loadXML($xml_str);  //ÔØÈëÕâ¸ö×Ö·û´®
//È¡µÃÔªËØ$child3
$root = $doc->documentElement;
$child3 = $root->getElementsByTagName("child3")->item(0);
//´´½¨Ò»¸önewchildÔªËØÀ´Ìæ´úchild3
$root->replaceChild(new DOMElement("newchild", "new content"), $child3);
//±£´æÎļþ
$doc->formatOutput = true;
$doc->saveXML();
$doc->save("root.xml");
?>
<?php
$xml_str = file_get_contents("root.xml"); //½«root.xmlÎļþÖеÄÄÚÈݶÁÈ


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