PHP在DOMDocument上保存HTML

$html = <<<HTML 
<div class="hey">test</div> 
<div id="no">bla</div> 
<div class="hey"><b>sa</b> hey<div id="l">b</div></div> 
HTML; 

$dom = new DOMDocument('1.0', 'utf-8'); 
$dom->loadHTML($html); 
$xpath = new DOMXPath($dom); 
$q = '//div[@class="hey"]'; 
$arr = $xpath->query($q); 
foreach($arr as $el) { 
    echo $el->nodeValue; 
}

我上面有这段代码，但它并没有保存类“嘿”里面的html。如何将HTML保存在div中？PHP在DOMDocument上保存HTML

来源

2011-08-25 Daniel