3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(system("echo $PATH"));
Output for 5.0.4 - 5.3.28, 5.4.0 - 5.4.27, 5.4.44 - 7.2.0
Notice: Undefined variable: PATH in /in/m258V on line 2 string(0) ""
Output for 5.3.29, 5.4.28 - 5.4.43
Notice: Undefined variable: PATH in /in/m258V on line 2 string(0) ""
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: PATH in /in/m258V on line 2 string(0) ""