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<?php class Base { public static function describe() { static $description = null; if ($description === null) { $description = "I am a " . get_called_class() . "\n"; } return $description; } } class Animal extends Base { public static function describe() { return 'Hello! ' . parent::describe(); } } class Cat extends Animal { } class Dog extends Animal { } echo Cat::describe(); echo Dog::describe(); echo Animal::describe();
Output for git.master, git.master_jit, rfc.property-hooks
Hello! I am a Cat Hello! I am a Cat Hello! I am a Cat

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