php的对象转json字符串数组对象

在PHP中，可以使用json_encode()函数将对象转换为JSON字符串，然后使用json_decode()函数将JSON字符串转换为数组或对象。

以下是一个示例：

class Person {
    public $name;
    public $age;
    public $city;

    public function __construct($name, $age, $city) {
        $this->name = $name;
        $this->age = $age;
        $this->city = $city;
    }
}

$person = new Person("John", 25, "New York");

// 将对象转换为JSON字符串
$jsonString = json_encode($person);

// 将JSON字符串转换为数组
$array = json_decode($jsonString, true);

// 将JSON字符串转换为对象
$object = json_decode($jsonString);

echo $jsonString . "\n";
print_r($array);
echo $object->name;

输出结果：

{"name":"John","age":25,"city":"New York"}
Array
(
    [name] => John
    [age] => 25
    [city] => New York
)
John