3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function foo() { return '42'; } echo preg_replace("//e\0.../", "foo()", "meh");
Output for 5.4.7 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_replace(): Null byte in regex in /in/5v5IR on line 4
Output for hhvm-3.12.0 - 3.13.2
Fatal error: Uncaught Error: Error: Null byte found in pattern in /in/5v5IR:4 Stack trace: #0 {main}
Process exited with code 255.
Output for hhvm-3.10.0
Fatal error: Error: Null byte found in pattern in /in/5v5IR on line 4
Process exited with code 255.
Output for 4.3.0 - 5.4.6
42m42e42h42