3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo '=> '.preg_replace('', '', "a \033[0;31mred\033[0m color").' <=';
Output for 4.3.11 - 7.2.0
Warning: preg_replace(): Empty regular expression in /in/fZUfk on line 2 => <=
Output for 4.3.0 - 4.3.10
Warning: Empty regular expression in /in/fZUfk on line 2 => <=