用PHP代替JS玩转DOM的思路及示例代码

<?php
//将html/xml文件转换成DOM树
$dom = new DOMDocument();
$dom->loadHTMLFile("hao.html");

//得到所有class为fix的dl标签

// example 1: for everything with an id
//$elements = $xpath->query("//[@id]");

// example 2: for node data in a selected id
//$elements = $xpath->query("/html/body/div[@id='yourTagIdHere']");

// example 3: same as above with wildcard
//$elements = $xpath->query("/div[@id='yourTagIdHere']");
$xpath = new DOMXPath($dom);
$dls = $xpath->query('//dl[@class="fix"]');

foreach ($dls as $dl) {
$spans = $dl->childNodes;
foreach ($spans as $span) {
echo trim($span->textContent)."\t";
}
echo "\n";
}
?>

<meta http-equiv="content-type" content="text/html; charset=utf-8">