How to call the constructor method of the parent class in PHP

The way a subclass in php calls the constructor of the parent class is: It can be achieved through the parent keyword. parent is a pointer to the parent class, which essentially represents the class of the parent class, not the object of the parent class. The specific calling method is: [parent::__construct()].

parent is a pointer to the parent class, which essentially represents the "class" of the parent class, not the "object" of the parent class.

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Generally we use parent to call the constructor of the parent class, such as parent::__construct() means calling the parent class's constructor __construct() method (constructor method).

Code implementation:

/*
    * 子类使用父类中的构造方法。
    */

    //父类方法
    class Person {
        //父类中的构造方法
        function __construct(){
            echo '这是父类中的构造方法！';
        }
    }

    //子类方法（继承子父类）
    class MenPerson extends Person {
        //子类重的构造方法
        function __construct(){
            //调用父类中的构造方法
            parent::__construct();
            //调用过之后在继续调用其下的各种实现
            echo '这是子类中的构造方法！';
        }
    }

    //实例化子类对象
    $menp = new MenPerson();

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