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run code in 200+ php & hhvm versions
Bugs & Features
<?php echo preg_replace('[^\d]$','', '3023');
Output for 4.3.11 - 7.1.7
Warning: preg_replace(): Unknown modifier '$' in /in/sbL2A on line 2
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '$' in /in/sbL2A on line 2