3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo preg_replace('(?!0)', '', 'CAB123')?>
based on IuWEk
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
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, hhvm-3.10.0 - 3.12.0
Warning: Compilation failed: nothing to repeat at offset 0 in /in/PZegJ on line 2