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<?php date_default_timezone_set('America/Los_Angeles'); class Fruit implements JsonSerializable { public $type = 'Apple', $lastEaten = null; public function __construct() { $this->lastEaten = new DateTime(); } public function jsonSerialize() { return [ 'type' => $this->type, 'lastEaten' => $this->lastEaten->format(DateTime::ISO8601) ]; } } echo json_encode(new Fruit());

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