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<?php class PHPApprentice { private static $velocity = ''; private static $initialized = false; public static function initialize () { if ( self::initialized ) return; self::$initialized = true; self::$velocity = 'fast!'; } public static function getVelocity () { self::initialize(); return self::$velocity; } public static function setVelocity ( $value ) { self::$velocity = $value; self::$initialized = true; } } PHPApprentice::setVelocity ( 'Ludicrous Speed!!' ); echo PHPApprentice::getVelocity();
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Undefined constant PHPApprentice::initialized in /in/3h4kc:9 Stack trace: #0 /in/3h4kc(18): PHPApprentice::initialize() #1 /in/3h4kc(29): PHPApprentice::getVelocity() #2 {main} thrown in /in/3h4kc on line 9
Process exited with code 255.

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