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run code in 300+ PHP versions simultaneously
<?php class A { } class B extends A { } class C { public function f(B $x); } class D extends C { public function f(A $x) { } }
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.31
Fatal error: Non-abstract method C::f() must contain body in /in/N1XWm on line 7
Process exited with code 255.
preferences:
184.16 ms | 1395 KiB | 68 Q