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<?php abstract class Vehicle { protected static $wheels = 4; public function wheels() { $vehicle = get_class($this); return $vehicle . " has " . self::$wheels . " wheels\n"; } } class Bike extends Vehicle { protected static $wheels = 2; } class Car extends Vehicle { protected static $wheels = 4; } $bike = new Bike(); $car = new Car(); print $car->wheels(); print $bike->wheels();
Output for git.master, git.master_jit, rfc.property-hooks
Car has 4 wheels Bike has 4 wheels

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