Online PHP editor | output for ZaL75

<?php $stringToReplace = "opening-ceremony-600x450.d20140220-u162540.jpg"; $removeTimestamp = strlen($stringToReplace); $removeTimestamp = floor($removeTimestamp - 21); $example_1 = substr_replace($stringToReplace, "jpg",$removeTimestamp); echo $example_1\n; $stringToReplace = "marc-by-marc-jacobs-13-black-136831_3-90x90.d20140220-u071915.jpg"; $removeTimestamp = strlen($stringToReplace); $removeTimestamp = floor($removeTimestamp - 21); $example_2 = substr_replace($stringToReplace, "jpg",$removeTimestamp); echo $example_2;