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run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match(42, '')); var_dump(preg_match('meh', '')); var_dump(preg_match('/lol/', ''));
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/S7VPE on line 2 bool(false) Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/S7VPE on line 3 bool(false) int(0)
Output for 4.3.0 - 4.3.10, hhvm-3.12.0
Warning: Delimiter must not be alphanumeric or backslash in /in/S7VPE on line 2 bool(false) Warning: Delimiter must not be alphanumeric or backslash in /in/S7VPE on line 3 bool(false) int(0)
Output for hhvm-3.10.0

Process exited with code 153.