3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public const FOO = 72; } final class B extends A { function test(): void { echo self::FOO; } } new B()->test();
Output for 8.4.1 - 8.4.11
72
Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.24
Parse error: syntax error, unexpected token "->" in /in/ZIeA1 on line 16
Process exited with code 255.
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171.94 ms | 1084 KiB | 8 Q