PHP object-oriented constructor and destructor

This article mainly introduces the constructor and destructor of PHP object-oriented, which has certain reference value. Now I share it with you. Friends in need can refer to it

Constructor

For a class with a constructor, this method will be called every time it is instantiated, which is suitable for initialization work.

Example

class MyClass
{
    // 构造函数 
    public function __construct($str)
    {
        echo $str;
    }
}

// 实例化对象
$c1= new MyClass('abc');

Destructor

When all references to an object are deleted, or are explicitly destroyed, or when the program ends ,implement.

Example

<?php

class Myclass
{
    public function __destruct(){
        echo &#39;对象被销毁了&#39;;
    }
}

$obj = new MyClass();

// 销毁对象的2种方法
unset($obj);
$obj = null;

echo &#39;<hr>&#39;;

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php object-oriented encapsulation

php object-oriented Classes and instantiated objects

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