3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo() : void { return; } foo();
based on vThoT
Output for 7.1.0 - 7.2.0
Output for 7.0.0 - 7.0.20
Fatal error: Uncaught TypeError: Return value of foo() must be an instance of void, none returned in /in/UgH0S:5 Stack trace: #0 /in/UgH0S(8): foo() #1 {main} thrown in /in/UgH0S on line 5
Process exited with code 255.
Output for hhvm-3.11.1 - 3.17.3
Fatal error: Uncaught TypeError: Value returned from function foo() must be of type void, null given in /in/UgH0S:5 Stack trace: #0 /in/UgH0S(8): foo() #1 {main}
Process exited with code 255.
Output for hhvm-3.10.1
Fatal error: Syntax only allowed in Hack files (<?hh) or with -v Eval.EnableHipHopSyntax=true in /in/UgH0S on line 3
Process exited with code 255.
Output for 5.5.0 - 5.6.30
Parse error: syntax error, unexpected ':', expecting '{' in /in/UgH0S on line 3
Process exited with code 255.