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run code in 150+ php & hhvm versions
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<?php class Singleton{ private static $instance; private function __construct(){} public static function instance() { if (is_null(self::instance)){ self::instance = new static; } return self::instance; } } $obj1 = Singleton::instance(); $obj2 = Singleton::instance(); var_dump(spl_object_hash($obj1), spl_object_hash($obj2));
Output for 5.3.0 - 5.4.30
Parse error: syntax error, unexpected '=' in /in/hVDrs on line 16
Process exited with code 255.