本文实例讲述了php类的定义与继承用法。分享给大家供大家参考。具体如下：

<?php

/*

* class

*/

class people {

public $name;

public $age;

function __construct($namec,$agec) {

$this->name = $namec;

$this->age = $agec;

}

protected function getmessage() {

return "姓名：".$this->name."<br/>"."年龄：".$this->age;

}

function __tostring() {

return "姓名：".$this->name."<br/>"."年龄：".$this->age;

}

function __destruct() {

echo "<br/> I am dead！";

}

function __call($key,$args) {

echo "<br/>","你调用的方法名不存在：$key","<br/>";

echo "你调用的参数是：",var_dump($args);

}

final function getf() {

echo "I am getf";

}

}

class xinxin extends people {

function getname() {

echo $this->getmessage();

echo '<br/>';

echo parent::getmessage();

echo '<br/>';

return "I am xinxin";

}

function getmessage() {

return "I am zilei getmessage <br/>";

}

function getff() {

echo "I am new getf";

}

}

$pp = new people("小弟","33");

//$pp->name = "小明";

//$pp->age = "88";

echo $pp->name;

echo ' ';

echo $pp->age;

echo '<br/><br/>';

$xx = new xinxin("小小","13");

echo $xx->getname();

?>

希望本文所述对大家的php程序设计有所帮助。