3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php namespace Foo; define('Foo\\true', false); if (is_empty(true)) { echo "TRUE"; } else { echo "FALSE!!!"; }
Output for 7.0.0 - 7.1.0RC5
Fatal error: Uncaught Error: Call to undefined function Foo\is_empty() in /in/FId8q:5 Stack trace: #0 {main} thrown in /in/FId8q on line 5
Process exited with code 255.
Output for 5.3.0 - 5.6.21, hhvm-3.12.0
Fatal error: Call to undefined function Foo\is_empty() in /in/FId8q on line 5
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_STRING in /in/FId8q on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/FId8q on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/FId8q on line 2
Process exited with code 255.