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run code in 200+ PHP versions simultaneously
<?php class A { public function T($a) { } } class B extends A { public function T(string $a) { } } echo "a";
based on 2qi9N
Output for 7.1.25 - 7.3.3
Warning: Declaration of B::T(string $a) should be compatible with A::T($a) in /in/gciem on line 15 a