Question

I am being struggling with this regex expression long time but i cannot find any fix. I used the javascript based tools to test and write the expression. When putting into the php page and matching with preg the results are different.

/(<img\b src=)"([^"]+)"(.* class=".*colorme(?:.|[^"]*)"[^>]+>)/

And the examples to test are here, the first should not be matched. THIS ALL WORKS with javascript, but not with php, only the classes class=”colorme” will be matched. Am I missing something ?

<img src="http://test.jpg" class="then" border="0" width="123" height="83">

<img src="test.jpg" border="0" alt="well watch picture" alt="tersts" class="really colorme" width="228" height="138">

<img src="test.jpeg" class="colorme then" border="0" width="123" height="83">

<img src="test" border="0" width="123" height="83" class="pic colorme then" with="me">

<img src="tests" border="0" class="colorme" width="123" height="83">

Answer 1

With DOM & no fancy expressions…

<?php 
$doc =<<<DEMO
<img src="http://test.jpg" class="then" border="0" width="123" height="83">
<img src="test.jpg" border="0" alt="well watch picture" alt="tersts" class="really colorme" width="228" height="138">
<img src="test.jpeg" class="colorme then" border="0" width="123" height="83">
<img src="test" border="0" width="123" height="83" class="pic colorme then" with="me">
<img src="tests" border="0" class="colorme" width="123" height="83">
DEMO;

$xml = new DOMDocument();
//Or you could use for locally saved files
//@$xml->loadHTMLFile('savedfile.html');
@$xml->loadHTML($doc);
foreach($xml->getElementsByTagName('img') as $image) {
    if(strstr($image->getAttribute('class'),'colorme')==true){
        $images[] = $image->getAttribute('src');
    }
}
print_r($images);
?>

Outputs:

Array (
    [0] => test.jpg
    [1] => test.jpeg
    [2] => test
    [3] => tests )