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run code in 200+ php & hhvm versions
Bugs & Features
<?php echo preg_replace('(?!0)', '', 'CAB123')?>
based on IuWEk
Output for 4.3.11 - 7.1.7
Warning: preg_replace(): Compilation failed: nothing to repeat at offset 0 in /in/PZegJ on line 2
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: nothing to repeat at offset 0 in /in/PZegJ on line 2