3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = "\\\x40"; $strip_hex = '#[\\]+#i'; $clean = preg_replace($strip_hex,'',$str); echo $clean;
based on 6cSrO
Output for 4.3.11 - 7.2.0
Warning: preg_replace(): Compilation failed: missing terminating ] for character class at offset 4 in /in/8PB4U on line 5
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: missing terminating ] for character class at offset 4 in /in/8PB4U on line 5