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run code in 300+ PHP versions simultaneously
<?php trait T { public function foo($foo) { } } interface I { function foo(); } class P { use T; } class C extends P implements I { use T; } $c = new C(); $c->foo(1);
Output for 8.5.0 - 8.5.3
Fatal error: Declaration of C::foo($foo) must be compatible with I::foo() in /in/0pY2b on line 5 Stack trace: #0 {main}
Process exited with code 255.
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18
Fatal error: Declaration of C::foo($foo) must be compatible with I::foo() in /in/0pY2b on line 5
Process exited with code 255.
Output for 7.0.6 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Fatal error: Declaration of C::foo($foo) must be compatible with I::foo() in /in/0pY2b on line 20
Process exited with code 255.
Output for 7.0.0 - 7.0.5
Fatal error: Declaration of P::foo($foo) must be compatible with I::foo() in /in/0pY2b on line 20
Process exited with code 255.
Output for 5.6.0 - 5.6.40
Fatal error: Declaration of P::foo() must be compatible with I::foo() in /in/0pY2b on line 21
Process exited with code 255.

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