How to convert object object to array in php

PHP is a widely used programming language, and its built-in objects and arrays are the most commonly used data types by programmers. However, when processing some data, we may need to use objects, and when ultimately storing and transmitting the data, we need to convert it into an array form. So, how to convert the object object in PHP into an array in actual development?

In PHP, we can convert object objects into arrays in two ways: using forced type conversion or calling methods in the object for conversion. Below, we will introduce the implementation methods of these two methods in detail.

1. Use forced type conversion

In PHP, you can convert the object object into an array type through forced type conversion. This method requires the use of the type conversion operator, that is, "(array)".

The specific implementation steps are as follows:

//创建一个示例对象
$person = new stdClass();
$person->name = "张三";
$person->age = 23;
$person->sex = "男";

//使用强制类型转换将对象转为数组类型
$array = (array) $person;

//输出转换后的数组
var_dump($array);

In the above code, a stdClass object named $person is created, which contains three attributes: name, age and sex. Forced type conversion, also known as the "(array)" operator, is used to convert the $person object into an array type. Finally, use the var_dump function to output the converted array.

We can get the following output:

array(3) {
  ["name"]=> string(6) "张三"
  ["age"]=> int(23)
  ["sex"]=> string(3) "男"
}

2. Use the method of the object to convert

In addition to using cast type conversion to convert the object to an array, We can also use the object's methods for conversion. Get the data in the object through the toArray() method defined in the object and return an array.

The specific implementation steps are as follows:

//创建一个示例对象
class Person {
    private $name;
    private $age;
    private $sex;

    public function __construct($n, $a, $s) {
        $this->name = $n;
        $this->age = $a;
        $this->sex = $s;
    }

   //对象的toArray()方法
    public function toArray() {
        return array(
            'name' => $this->name,
            'age' => $this->age,
            'sex' => $this->sex
        );
    }
}

$person = new Person('张三', 23, '男');
//使用对象的toArray()方法将对象转为数组类型
$array = $person->toArray();

//输出转换后的数组
var_dump($array);

In the above code, a class named Person is created, the toArray() method is defined in the class, and the properties of the object are set as private properties. , assign it in the constructor. Create a Person object named $person, and then call its internal toArray() method to convert the object to an array type. Finally output the converted array.

After executing the above code, we can get the following output:

array(3) {
  ["name"]=> string(6) "张三"
  ["age"]=> int(23)
  ["sex"]=> string(3) "男"
}

The above are two methods of converting object objects in PHP to array types. In actual development, you can choose a suitable conversion method according to your own needs. At the same time, it should be noted that the above two methods are not perfect, they both have limitations. For example, using forced type conversion will ignore the private attributes in the object, while using the object method to convert requires manually defining the attributes one by one, which is relatively troublesome. Therefore, in actual development, it is necessary to choose a suitable method according to the specific situation.

The above is the detailed content of How to convert object object to array in php. For more information, please follow other related articles on the PHP Chinese website!