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run code in 300+ PHP versions simultaneously
<?hh //strict interface IFoo { public function boo() :string; } trait TFoo { public function boo() { return 1; } } class Foo implements IFoo { use TFoo; } $f = new Foo(); $f->boo();
Output for 5.3.0 - 5.3.28, 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.3 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<?hh //strict interface IFoo { public function boo() :string; } trait TFoo { public function boo() { return 1; } } class Foo implements IFoo { use TFoo; } $f = new Foo(); $f->boo();
Output for 8.0.13
Parse error: syntax error, unexpected token "interface" in /in/Ap6Ra on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.29, 5.5.0 - 5.5.13, 7.3.32 - 7.3.33, 7.4.33
Parse error: syntax error, unexpected 'interface' (T_INTERFACE) in /in/Ap6Ra on line 3
Process exited with code 255.

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