3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function f($v = null) { static $c = 4; if ($v) $c = $v; return ++$c; } echo foo(); echo foo(25); echo foo(0); echo foo('abc'); echo foo();
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Call to undefined function foo() in /in/BWhG8:9 Stack trace: #0 {main} thrown in /in/BWhG8 on line 9
Process exited with code 255.
Output for 5.0.0 - 5.6.28, hhvm-3.12.0
Fatal error: Call to undefined function foo() in /in/BWhG8 on line 9
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: foo() in /in/BWhG8 on line 9
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: foo() in /in/BWhG8 on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: foo() in /in/BWhG8 on line 9