php regex for finding image in a Text

Question

i have no idea about php regex i wish to extract all image tags <img src="www.google.com/exampleimag.jpg"> form my html how can i do this using preg_match_all

thanks SO community for u'r precious time

well my scenario is like this there is not whole html dom but just a variable with img tag $text="this is a new text <img="sfdsfdimg/pfdg.fgh" > there is another iamh <img src="sfdsfdfsd.png"> hjkdhfsdfsfsdfsd kjdshfsd dummy text

You just want all images, regardless what their src value is? — Sampson
– Sampson, Commented May 1, 2012 at 6:12
Don't use regex to parse HTML; read up on DomDocument - php.net/domdocument — Ja͢ck
– Ja͢ck, Commented May 1, 2012 at 6:12
Use a PHP HTML parser instead of a regex. HTML and regular expressions don't mix well. — Surreal Dreams
– Surreal Dreams, Commented May 1, 2012 at 6:12
@JonathanSampson do i need domdocument too when my scenario is as above — spiderman
– spiderman, Commented May 1, 2012 at 6:20
@spiderman I just tested your text, and it found the image just fine. — Sampson
– Sampson, Commented May 1, 2012 at 6:21

Sampson · Accepted Answer · 2012-05-02 04:43:00Z

4

Don't use regular expressions to parse HTML. Instead, use something like the DOMDocument that exists for this very reason:

$html = 'Sample text. Image: <img src="foo.jpg" />. <img src="bar.png" />';
$doc = new DOMDocument();
$doc->loadHTML( $html );

$images = $doc->getElementsByTagName("img");

for ( $i = 0; $i < $images->length; $i++ ) {
  // Outputs: foo.jpg bar.png
  echo $images->item( $i )->attributes->getNamedItem( 'src' )->nodeValue;
}

You could also get the image HTML itself if you like:

// <img src="foo.jpg" />
echo $doc->saveHTML ( $images->item(0) );

edited May 2, 2012 at 4:43

answered May 1, 2012 at 6:13

Sampson

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Community · Accepted Answer · 2017-05-23 12:29:07Z

1

You can't parse HTML with regex. You're much better off using the DOM classes. They make it trivially easy to extract the images from a valid HTML tree.

$doc = new DOMDocument ();
$doc -> loadHTML ($html);
$images = $doc -> getElementsByTagName ('img'); // This will generate a collection of DOMElement objects that contain the image tags

edited May 23, 2017 at 12:29

CommunityBot

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answered May 1, 2012 at 6:13

GordonM

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