3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo preg_replace("/foo/e\0/", "2+2", "foo");
Output for 5.4.7 - 7.1.0
Warning: preg_replace(): Null byte in regex in /in/MjYK9 on line 3
Output for 4.3.0 - 5.4.6
4