3v4l.org

run code in 200+ php & hhvm versions
<?php declare(strict_types=1); class Foo { public function bar() : int { return '1'; } } print (new Foo)->bar();
based on AHOW3
Output for 7.0.0 - 7.2.6
Fatal error: Uncaught TypeError: Return value of Foo::bar() must be of the type integer, string returned in /in/Zeb79:8 Stack trace: #0 /in/Zeb79(13): Foo->bar() #1 {main} thrown in /in/Zeb79 on line 8
Process exited with code 255.
Output for 5.6.0 - 5.6.29
Warning: Unsupported declare 'strict_types' in /in/Zeb79 on line 3 Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/Zeb79 on line 7
Process exited with code 255.