3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = '300 000'; $b = preg_replace('[^0-9]+', '', $a); print $b;
Output for 4.3.11 - 7.2.0
Warning: preg_replace(): Unknown modifier '+' in /in/UIikc on line 3
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '+' in /in/UIikc on line 3