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：
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<?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();
?>
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希望本文所述对大家的php程序设计有所帮助。