- substr: documentation ( source)
- print_r: documentation ( source)
- parse_url: documentation ( source)
- strrpos: documentation ( source)
<?php
$imageURL = "http://images.moneysavingexpert.com/images/warmth-alerts-illustrations.png";
$parts = parse_url($imageURL);
$path = $parts['path'];
$lastSlash = strrpos($path,"/");
$imageName = substr($path, $lastSlash);
echo "<pre>";
print_r($parts);
print_r($imageName);