3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $someCallback = function() { echo "aaa"; } testCallback($someCallback); function testCallback(callable $test) { $test(); }
Output for 5.4.0 - 5.4.16
Parse error: syntax error, unexpected 'testCallback' (T_STRING) in /in/U4UiU on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.26
Parse error: syntax error, unexpected T_STRING in /in/U4UiU on line 7
Process exited with code 255.