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run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = md5(''.5255751.'20!stUdi0s0l!11');
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.4.0 - 5.4.17
Parse error: syntax error, unexpected '.5255751' (T_DNUMBER) in /in/WkuhH on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_DNUMBER in /in/WkuhH on line 2
Process exited with code 255.