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run code in 300+ PHP versions simultaneously
<?php class Aself { const AA = 'AA'; public static function get() { return self::AA; } } class Astatic { const AA = 'AA'; public static function get() { return static::AA; } } $t = microtime(true); for ($i = 0; $i < 10000; $i++) { Aself::get(); } echo microtime(true) - $t; echo "\n"; $t = microtime(true); for ($i = 0; $i < 10000; $i++) { Astatic::get(); } echo microtime(true) - $t; echo "\n";

preferences:
24.7 ms | 402 KiB | 5 Q