3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function _() { echo 'allowed'; } _();
based on 1h5h6
Output for 5.0.0 - 5.4.34
Fatal error: Cannot redeclare _() in /in/B5CXZ on line 4
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot redeclare _() in /in/B5CXZ on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot redeclare _() in /in/B5CXZ on line 2