3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo() : void { // } function bar() : void { return foo(); } bar();
Output for 7.1.0 - 7.2.0
Fatal error: A void function must not return a value in /in/erTeP on line 10
Process exited with code 255.
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/erTeP:6 Stack trace: #0 /in/erTeP(10): foo() #1 /in/erTeP(13): bar() #2 {main} thrown in /in/erTeP on line 6
Process exited with code 255.
Output for 5.3.21 - 5.6.28
Parse error: syntax error, unexpected ':', expecting '{' in /in/erTeP on line 3
Process exited with code 255.