<?php

$text = '<a href="http://f...content-available-to-author-only...m.ae/cameras-photo/digital-cameras/samsung-es95-white"><img id="img_28300"';
$regex = '/'.preg_quote('<a href="http://f...content-available-to-author-only...m.ae/cameras-photo/digital-cameras/samsung-es95-white"><img id="img_', '/').'(.*?)"/mis';
var_dump($regex);
var_dump( preg_match($regex, $text) );