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run code in 300+ PHP versions simultaneously
<?php interface I { // In Symfony 5.4 this is: // public static function test($s, $i, $m); // In Symfony 6.0 this is: public static function test(string $s, int $i, mixed $m): mixed; } class A implements I { public static function test($s, $i, $m) { var_dump($s, $i, $m); } } A::test('string', 1, NULL);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Declaration of A::test($s, $i, $m) must be compatible with I::test(string $s, int $i, mixed $m): mixed in /in/BabgE on line 11
Process exited with code 255.
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