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run code in 300+ PHP versions simultaneously
<?php class foo {} $bar = function () { return static::class; }; var_dump($bar->call(new foo));
Output for 7.0.1 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
string(3) "foo"
Output for 7.0.0

Process exited with code 139.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Cannot access static::class when no class scope is active in /in/APFC9 on line 5
Process exited with code 255.
preferences:
237.01 ms | 402 KiB | 330 Q