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run code in 150+ php & hhvm versions
Bugs & Features
<?php preg_match('¿ho¿i','HO',$matches); var_dump($matches);
Output for 5.2.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): Unknown modifier '�' in /in/BJRT2 on line 2 NULL
Output for hhvm-3.10.0 - 3.13.2
Warning: Unknown modifier '�': [¿ho¿i] in /in/BJRT2 on line 2 NULL
Output for 4.3.11 - 5.1.6
Warning: preg_match(): Unknown modifier '�' in /in/BJRT2 on line 2 array(0) { }
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '�' in /in/BJRT2 on line 2 array(0) { }