3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(proc_open('/bin/php-5.4.8'));
Output for 5.0.0 - 7.2.0
Warning: proc_open() expects at least 3 parameters, 1 given in /in/hIutv on line 1 bool(false)
Output for 4.3.0 - 4.4.9
Warning: proc_open() expects exactly 3 parameters, 1 given in /in/hIutv on line 1 bool(false)