Extract src from IMG tag using regular expression

Here is the code to extract src from IMG tag using regular expression. We can use this also in drupal
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<?php
$field_lead_image_fid = '<img src="src.jpg" alt="Get groomed for the industry" title="title" />';
$epression = "/<img src=\"(.*)\" alt=\"(.*)\" title=\"(.*)\" \/>/";
preg_match_all($epression,$field_lead_image_fid,$matches);
echo '<pre>'; print_r($matches); echo '</pre>';
?>
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Note:
$epression Order [ src, alt, title] should be same as in $field_lead_image_fid.