3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php // Positive numbers: echo preg_replace("ela4|lva1","","ela4-db10.prod,lva1-db100.prod"); ?>
Output for 4.3.11 - 7.2.0
Warning: preg_replace(): Delimiter must not be alphanumeric or backslash in /in/9PCZM on line 3
Output for 4.3.0 - 4.3.10
Warning: Delimiter must not be alphanumeric or backslash in /in/9PCZM on line 3