3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php namespace Foo; define('Foo\\if', while); if (true) { echo "TRUE"; } else { echo "FALSE!!!"; }
Output for 5.4.0 - 5.4.17
Parse error: syntax error, unexpected 'while' (T_WHILE) in /in/c7vnE on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.26
Parse error: syntax error, unexpected T_WHILE in /in/c7vnE on line 3
Process exited with code 255.