3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class Foo { public function bar(): void {} public function baz(?string $string): ?bool {} }
based on nCVrF
Output for 7.1.0 - 7.3.0rc6
Output for 7.0.0 - 7.0.20
Parse error: syntax error, unexpected '?', expecting variable (T_VARIABLE) in /in/CCUgp on line 5
Process exited with code 255.
Output for hhvm-3.15.4
Fatal error: Uncaught Error: Syntax only allowed in Hack files (<?hh) or with -v Eval.EnableHipHopSyntax=true in /in/CCUgp:5 Stack trace: #0 {main}
Process exited with code 255.
Output for 5.6.0 - 5.6.30
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/CCUgp on line 4
Process exited with code 255.