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run code in 300+ PHP versions simultaneously
<?php class A{ function test(A $a, B $b){} } class B extends A{ function test(A $a, B $b, C $c = NULL){} } class C extends B{ function test(A $a, B $b, D $c = NULL){} }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Could not check compatibility between C::test(A $a, B $b, ?D $c = null) and B::test(A $a, B $b, ?C $c = null), because class D is not available in /in/ljNjE on line 12
Process exited with code 255.

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