[英]PHP preg_match image between html tags
I've got an html template like this: 我有一个像这样的html模板:
<div class="cont">
<div class="...">
<p>...<p>
<img alt="" class="popup" src="DESIRED IMAGE LINK" style="..." /></p><p>...</p>
....
And i want to extract "DESIRED IMAGE LINK" inside the "" tag, currently i'm using this: 我想在“”标签中提取“DESIRED IMAGE LINK”,目前我正在使用它:
$pattern = '<div class="cont">.*?src=["\']?([^"\']?.*?(png|jpg|jpeg|gif))["\']?/i';
if (preg_match($pattern, $content, $image))
.....
But it doesn't work, the error is: 但它不起作用,错误是:
warning: preg_match() [function.preg-match]: Unknown modifier '.'
How can i fix it? 我该如何解决? Thanks 谢谢
The answer is, don't use regular expressions. 答案是,不要使用正则表达式。
$contents = <<<EOS
<div class="cont">
<div class="...">
<p>...<p>
<img alt="" class="popup" src="DESIRED IMAGE LINK" style="..." /></p><p>...</p>
EOS;
$doc = new DOMDocument;
libxml_use_internal_errors(true);
$doc->loadHTML($contents);
libxml_clear_errors();
$xp = new DOMXPath($doc);
// get first image inside div.cont
foreach($xp->query('//div[@class="cont"]//img[1]') as $node) {
// output the src attribute
echo $node->getAttribute('src'), PHP_EOL;
}
See also: DOMDocument DOMXPath
另请参见: DOMDocument DOMXPath
$pattern = '/<div class="cont">.*?src=["\\']?([^"\\']?.*?(png|jpg|jpeg|gif))["\\']?/i
你错过了领先的分隔符/
。
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