Online PHP editor | output for dEG2L

@ 2014-01-15T19:21:41Z

<?php
function significant_number($string){
		$offset=9;
		$string=substr($string, $offset);
		$count=strlen($string);
		$i=0;
		while($i < $count){
			if(ctype_digit($string[$i])) {
				break;
			}
			$i++;
		}
		
		return $string[$i];
	}

$udid="086786dc4ae78dbf6a6a9b621b5ae4";
$md5udid=md5sum($udid);
$sigNo=significant_number($udid);

$testudid=substr($md5udid, 4, sigNo).substr($udid, sigNo, 6);

echo $testudid;
?>

Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Fatal error: Uncaught Error: Call to undefined function md5sum() in /in/dEG2L:18 Stack trace: #0 {main} thrown in /in/dEG2L on line 18
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30: Fatal error: Call to undefined function md5sum() in /in/dEG2L on line 18
Process exited with code 255.

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