03--Learn PHP Object Orientation-$ this

What is PHP object oriented $ this $ this

First look at where objects and classes are stored in memory

$s = new Saler();

Create the $ s object by instantiating an object through new Saler and pointing $ s to the memory where the object is located,

Instantiation, just copy the attributes of the class to the object space, there is no object method in the object space; ($ this is the object itself in the method member in the class)

Paste a piece of code

<?php
class Human{
    public $name;
    public $age;

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

$man = new Human('Tom',18);
$man->sayName();        //object(Human)#1 (2) { ["name"]=> string(3) "Tom" ["age"]=> int(18) }

$ this is the object itself, the method that the object calls the object itself is $ his in time the object itself