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run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump( preg_grep('t*', array('axx'=>'bxx')) );
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_grep(): Delimiter must not be alphanumeric or backslash in /in/ecaBA on line 1 bool(false)
Output for 4.3.0 - 4.3.10, hhvm-3.10.0 - 3.12.0
Warning: Delimiter must not be alphanumeric or backslash in /in/ecaBA on line 1 bool(false)