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run code in 150+ php & hhvm versions
Bugs & Features
<?php $ref = "joel912oihjasis_cool"; $ref = preg_replace("^[a-zA-Z0-9]", "", $ref); echo $ref;
Output for 4.3.11 - 7.1.0
Warning: preg_replace(): No ending delimiter '^' found in /in/mPLuO on line 3
Output for 4.3.0 - 4.3.10
Warning: No ending delimiter '^' found in /in/mPLuO on line 3