<?php
$string = '<a href="index.html" class="bordered-feature-image"><img src="images/3D Logo.jpg" alt="" /></a> <img src="house.png" /> <img src="http://www.google.com/image.gif" alt="" />';
// GRAB THE IMAGES
preg_match_all('~(?<="|\')[A-Z0-9_ /]+\.(?:jpe?g|png)(?=\'|")~i', $string, $images); $images = $images[0];
print "\nImages From Match:\n"; print_r($images);
// STORE FILE TYPES AS AN ARRAY
$accepted_image_types = array('jpg', 'jpeg', 'png');
preg_match_all('~(?<="|\')[A-Z0-9_ /]+\.(?:'.implode('|', $accepted_image_types).')(?=\'|")~i', $string, $images); $images = $images[0];
print "\nImages Pulled In From Array:\n"; print_r($images);
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