php的物件導向

以下將涵蓋php面向對象的主要知識點：

建立classname.php

$name;    }    public function __set($name,$value){        if(($name="attribute") && ($value>=0) && ($value<=100)){            $this->attribute=$value;        }    }}//存取修飾詞：private、protected、public;class A{    public $attribute="default value";    private function operation1(){        echo "operation1 called 
";    }    protected function operation2(){        echo "operation2 called 
";    }    public function operation3(){        echo "operation3 called 
";    }    function operation(){        echo "Something 
";        echo "The value of \$attribute is ". $this->attribute."
";    }}//類的繼承、重載class B extends A{    public $attribute="different value";    function __construct(){        $this->operation2();        $this->operation3();    }    function operation(){        echo "Something else
";        echo "The value of \$attribute is ". $this->attribute."
";    }}//使用final關鍵字禁止繼承和重載class FinalA{    public $attribute="default value";    final function operation(){        echo "Something
";        echo "The value of \$attribute is".$this->attribute."
";    }}//實現介面interface Displayable{    function display();}class webPage implements Displayable{    function display(){        echo "實現了介面
";    }}//使用Pre-class常量、實現靜態方法class Math{    //使用Pre-class常量    const  pi=3.14159;    //實現靜態方法    static function squared($input){        return $input*$input;    }}//延遲靜態繫結class C{    public static function who(){        echo __CLASS__;    }    public static function test(){        static::who();    }}class D extends C{    public static function who(){        echo __CLASS__;    }}//使用抽象類別abstract class E{    abstract function operationX($param1,$param2);}//使用__call()重載方法class Overload{    public function __call($method,$p){        if($method=="display"){            if(is_object($p[0])){                $this->displayObject($p[0]);            }elseif(is_array($p[0])){                $this->displayArray($p[0]);            }else{                $this->displayScalar($p[0]);            }        }    }}//實現迭代器和迭代class myClass{    public $a="5";    public $b="7";    public $c="9";}//將類轉換成字串class Printable{    public $testone;    public $testtwo;    public function __toString(){        return(var_export($this,TRUE));    }}

建立index.php

require_once 'classname.php';//建立執行個體$a=new classname();$a->attribute=5;//類的繼承、重載$b=new B();$b->operation3();echo "
";$b->operation();//訪問常量所屬的類echo "Math::pi=".Math::pi."
";//訪問靜態方法echo Math::squared(8)."
";//檢查類的類型和類型提示 instanceof關鍵字if($b instanceof B){    echo "true 
";}function check_hint(B $someclass){    echo "right 
";}check_hint($b);//延遲靜態繫結D::test();echo "
";//複製對象$c=clone $b;//使用__call()重載方法$ov=new Overload();$ov->display(array(1,2,3));$ov->display('cat');//使用__autoload()方法function __autoload($name){    include_once $name.".php";}//實現迭代器和迭代$x=new myClass();foreach($x as $attribute){    echo $attribute."
";}//使用Reflection(反射)APIrequire_once ("TLA/page.inc");$class=new ReflectionClass("Page");echo "
".$class."
";

以上就介紹了php的物件導向，包括了方面的內容，希望對PHP教程有興趣的朋友有所協助。

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