PHP preg_match image between html tags

Question

I've got an html template like this:

    <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:

$pattern = '<div class="cont">.*?src=["\']?([^"\']?.*?(png|jpg|jpeg|gif))["\']?/i';
if (preg_match($pattern, $content, $image))
     .....

But it doesn't work, the error is:

    warning: preg_match() [function.preg-match]: Unknown modifier '.'

How can i fix it? Thanks

Ja͢ck · Accepted Answer · 2012-12-18 17:01:27Z

3

The answer is, don't use regular expressions.

$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;
}

Comments

Community · Accepted Answer · 2020-06-20 09:12:55Z

1

If you're planning on parsing html try using DOM with xpath.

edited Jun 20, 2020 at 9:12

CommunityBot

11 silver badge

answered Dec 18, 2012 at 17:00

piddl0r

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1 Comment

Halcyon Over a year ago

The DOM is not always X(HT)ML valid. I would strongly advise against this. For simple stuff, regular expressions work fine.

Halcyon · Accepted Answer · 2012-12-18 16:58:39Z

0

$pattern = '/<div class="cont">.*?src=["\']?([^"\']?.*?(png|jpg|jpeg|gif))["\']?/i

You're missing your leading delimiter character /.

answered Dec 18, 2012 at 16:58

Halcyon

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