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run code in 150+ php & hhvm versions
Bugs & Features
<?php echo preg_replace('\d','', '3023');
Output for 4.3.11 - 7.1.0
Warning: preg_replace(): Delimiter must not be alphanumeric or backslash in /in/CZtkI on line 2
Output for 4.3.0 - 4.3.10
Warning: Delimiter must not be alphanumeric or backslash in /in/CZtkI on line 2