<?php
//魔術(shù)方法
//當(dāng)包含多個(gè)類
//1.自動(dòng)裝載類的魔術(shù)方法__autoload()
function __autoload($classname){
if (isset($classname)){
require_once $classname.'.class.php';
}
}


/* $computer1=new Computer();
$computer1->addList('dalisng',234);
echo $computer1; */
//__call()屏蔽調(diào)用方法時(shí)候產(chǎn)生的錯(cuò)誤，當(dāng)我們調(diào)用一個(gè)不存在的方法時(shí)候，會(huì)自動(dòng)調(diào)用__call（）方法。
//獨(dú)立實(shí)例，兩個(gè)實(shí)例各自建立，互不干涉
$computer2=new Computer();
echo $computer2->name;echo "<br/>";
$computer3=new Computer();
echo $computer3->name;echo "<br/>";
$computer3->name="大亮";
echo '$computer3->name:'.$computer3->name;echo "<br/>";
echo '$computer2->name:'.$computer2->name;echo "<br/>";

echo "<hr/>";
//相連實(shí)例，即 用等于號(hào)來開辟一個(gè)新的實(shí)例，此時(shí)兩個(gè)實(shí)例共同指向一個(gè)內(nèi)存地址，一損俱損，一榮俱榮
$computer4=new Computer();
echo '$computer4->name:'.$computer4->name;echo "<br/>";
$computer5=$computer4;
echo '$computer5->name:'.$computer5->name;echo "<br/>";
$computer4->name="大亮";
echo '$computer4->name:'.$computer4->name;echo "<br/>";
echo '$computer5->name:'.$computer5->name;echo "<br/>";

echo "<hr/>";
//克隆__clone,克隆的新實(shí)例和被克隆的實(shí)例是兩個(gè)相互獨(dú)立的個(gè)體，雖然屬性值相同，但是屬性存放的地址不同，所以克隆后你我生死無關(guān)
$computer6=new Computer();
echo '$computer6->name:'.$computer6->name;echo "<br/>";
$computer7=clone $computer6;
echo '$computer7->name:'.$computer7->name;echo "<br/>";
$computer6->name="克隆";
echo '$computer6->name:'.$computer6->name;echo "<br/>";
echo '$computer7->name:'.$computer7->name;echo "<br/>";

<?php
class Computer{
public $name="1234";
function __construct(){
echo "you are right!";
}

function __call($methodName,$argsList){//當(dāng)方法不存在的時(shí)候會(huì)自動(dòng)調(diào)用此方法，$argsList是相應(yīng)的參數(shù)
echo $methodName."()方法不存在!";
echo "<pre>";
print_r($argsList);
echo "</pre>";
}

private function __toString(){ //當(dāng)用戶輸出不存在的字符串時(shí)候，該方法自動(dòng)調(diào)用 比如echo 對(duì)象名
echo "我是對(duì)象的字符串！";
}
}