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run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('~(?"verb"[0-9]+)~', 'asdasd123123'));
based on nBXUp
Output for 4.4.9, 5.2.6 - 7.2.0
Warning: preg_match(): Compilation failed: unrecognized character after (? or (?- at offset 2 in /in/3MSY8 on line 3 bool(false)
Output for 4.3.11 - 4.4.8, 5.0.0 - 5.2.5
Warning: preg_match(): Compilation failed: unrecognized character after (? at offset 2 in /in/3MSY8 on line 3 bool(false)
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: unrecognized character after (? at offset 2 in /in/3MSY8 on line 3 bool(false)