3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $regex = "^[a-zA-Z0-9]"; $str = '├╝ba'; echo preg_replace($regex, '', $str);
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_replace(): No ending delimiter '^' found in /in/fihF1 on line 7
Output for hhvm-3.10.0 - 3.13.2
Warning: No ending delimiter '^' found: [^[a-zA-Z0-9]] in /in/fihF1 on line 7
Output for 4.3.0 - 4.3.10
Warning: No ending delimiter '^' found in /in/fihF1 on line 7