php怎么把对象转换成数组

class Car {  public $name = "BMW";  public $color = "blue";  public function start() {       echo "The car has started.";  }}$car = new Car();$array = (array) $car;print_r($array);

Array(    [name] => BMW    [color] => blue)

class Person {   private $name;   public function __construct($name) {      $this->name = $name;   }   public function sayHello() {      return "Hello, my name is ".$this->name;   }}$person = new Person("Tom");$reflection = new ReflectionObject($person);$properties = $reflection->getProperties();$array = array();foreach ($properties as $property) {   $property->setAccessible(true);   $value = $property->getValue($person);   $array[$property->getName()] = $value;}$methods = $reflection->getMethods();foreach ($methods as $method) {   $array[$method->getName()] = $method->invoke($person);}print_r($array);

Array(   [name] => Tom   [sayHello] => Hello, my name is Tom)

class Car {   public $name = "BMW";   public $color = "blue";}class Person {   public $name = "Tom";   public $age = 30;   public $car;   public function __construct() {      $this->car = new Car();   }}function objectToArray($obj) {   if (is_object($obj)) {      $arr = array();      $keys = get_object_vars($obj);      foreach ($keys as $key => $value) {         $arr[$key] = objectToArray($value);      }      return $arr;   } else if (is_array($obj)) {      $arr = array();      foreach ($obj as $key => $value) {         $arr[$key] = objectToArray($value);      }      return $arr;   } else {      return $obj;   }}$person = new Person();$array = objectToArray($person);print_r($array);

Array(    [name] => Tom    [age] => 30    [car] => Array        (            [name] => BMW            [color] => blue        ))