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run code in 300+ PHP versions simultaneously
<?php class ABase { const I_AM_CONSTANT = 'shazam'; private static $instance = null; static public function getInstance() { if(self::$instance == null) { self::$instance = new ABase(); } } private function __construct() { } } class B extends ABase { const I_AM_CONSTANT = 'kaboom!'; private static $instance = null; private function __construct() { } } $bInstance = B::getInstance(); echo B::I_AM_CONSTANT;
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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
kaboom!
preferences:
167.82 ms | 404 KiB | 198 Q