3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public function foo(int $foo=42) {} } class B extends A { public function foo(int $foo=101) {} } class C extends A { public function foo(int $foo) {} }
Output for 8.1.0 - 8.1.29, 8.2.0 - 8.2.22, 8.3.0 - 8.3.10
Fatal error: Declaration of C::foo(int $foo) must be compatible with A::foo(int $foo = 42) in /in/SEsRm on line 12
Process exited with code 255.
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