php 对象示例

<?php
header("content-type:text/html; charset=utf-8");
error_reporting(E_ALL);

class MyClass {
    
    var $id;//声明变量
    
    function __construct($name){
        echo "构造函数:类被实例化后自动调用<br/>";
        $this->name = $name;//声明并初始化变量
    }
    
    function printer($con){
        echo isset($con) ? $con : "空";
        echo "<br/>";
    }
    
    function sayName(){
        echo $this->name;
        echo "<br/>";
    }
    
    function getID(){
        return $this->id;
    }

    function __destruct(){
        echo "析构函数:对象结束生命周期时自动调用";
    }
    
}

$obj = new MyClass("weihexin");

$obj->sayName();

$obj->printer($obj->getID());