url = $par;  }    function getUrl(){     echo $this->url . PHP_EOL;  }    function setTitle($par){     $this->title = $par;  }    function getTitle(){     echo $this->title . PHP_EOL;  }}?>

$runoob = new Site;$taobao = new Site;$google = new Site;

// 调用成员函数，设置标题和URL$runoob->setTitle( "菜鸟教程" );$taobao->setTitle( "淘宝" );$google->setTitle( "Google 搜索" );$runoob->setUrl( 'www.runoob.com' );$taobao->setUrl( 'www.taobao.com' );$google->setUrl( 'www.google.com' );// 调用成员函数，获取标题和URL$runoob->getTitle();$taobao->getTitle();$google->getTitle();$runoob->getUrl();$taobao->getUrl();$google->getUrl();

     url = $par;   }      function getUrl(){      echo $this->url . PHP_EOL;   }      function setTitle($par){      $this->title = $par;   }      function getTitle(){      echo $this->title . PHP_EOL;   } } $runoob = new Site; $taobao = new Site; $google = new Site; // 调用成员函数，设置标题和URL $runoob->setTitle( "菜鸟教程" ); $taobao->setTitle( "淘宝" ); $google->setTitle( "Google 搜索" ); $runoob->setUrl( 'www.runoob.com' ); $taobao->setUrl( 'www.taobao.com' ); $google->setUrl( 'www.google.com' ); // 调用成员函数，获取标题和URL $runoob->getTitle(); $taobao->getTitle(); $google->getTitle(); $runoob->getUrl(); $taobao->getUrl(); $google->getUrl(); ?>

function __construct( $par1, $par2 ) {   $this->url = $par1;   $this->title = $par2;}

$runoob = new Site('www.runoob.com', '菜鸟教程'); $taobao = new Site('www.taobao.com', '淘宝'); $google = new Site('www.google.com', 'Google 搜索'); // 调用成员函数，获取标题和URL $runoob->getTitle(); $taobao->getTitle(); $google->getTitle(); $runoob->getUrl(); $taobao->getUrl(); $google->getUrl();

     name = "MyDestructableClass";   }   function __destruct() {       print "销毁 " . $this->name . "\n";   }}$obj = new MyDestructableClass();?>

     category = $par;    }      function getCate(){        echo $this->category . PHP_EOL;    }}

function getUrl() {   echo $this->url . PHP_EOL;   return $this->url;}   function getTitle(){   echo $this->title . PHP_EOL;   return $this->title;}

     public;        echo $this->protected;        echo $this->private;    }}$obj = new MyClass();echo $obj->public; // 这行能被正常执行echo $obj->protected; // 这行会产生一个致命错误echo $obj->private; // 这行也会产生一个致命错误$obj->printHello(); // 输出 Public、Protected 和 Private/** * Define MyClass2 */class MyClass2 extends MyClass{    // 可以对 public 和 protected 进行重定义，但 private 而不能    protected $protected = 'Protected2';    function printHello()    {        echo $this->public;        echo $this->protected;        echo $this->private;    }}$obj2 = new MyClass2();echo $obj2->public; // 这行能被正常执行echo $obj2->private; // 未定义 privateecho $obj2->protected; // 这行会产生一个致命错误$obj2->printHello(); // 输出 Public、Protected2 和 Undefined?>

     MyPublic();        $this->MyProtected();        $this->MyPrivate();    }}$myclass = new MyClass;$myclass->MyPublic(); // 这行能被正常执行$myclass->MyProtected(); // 这行会产生一个致命错误$myclass->MyPrivate(); // 这行会产生一个致命错误$myclass->Foo(); // 公有，受保护，私有都可以执行/** * Define MyClass2 */class MyClass2 extends MyClass{    // 此方法为公有    function Foo2()    {        $this->MyPublic();        $this->MyProtected();        $this->MyPrivate(); // 这行会产生一个致命错误    }}$myclass2 = new MyClass2;$myclass2->MyPublic(); // 这行能被正常执行$myclass2->Foo2(); // 公有的和受保护的都可执行，但私有的不行class Bar {    public function test() {        $this->testPrivate();        $this->testPublic();    }    public function testPublic() {        echo "Bar::testPublic\n";    }        private function testPrivate() {        echo "Bar::testPrivate\n";    }}class Foo extends Bar {    public function testPublic() {        echo "Foo::testPublic\n";    }        private function testPrivate() {        echo "Foo::testPrivate\n";    }}$myFoo = new foo();$myFoo->test(); // Bar::testPrivate                 // Foo::testPublic?>

     vars[$name] = $var;    }      public function getHtml($template)    {        foreach($this->vars as $name => $value) {            $template = str_replace('{' . $name . '}', $value, $template);        }         return $template;    }}

     showConstant();echo $class::constant . PHP_EOL; // 自 PHP 5.3.0 起?>

     getValue() . PHP_EOL;    }}class ConcreteClass1 extends AbstractClass{    protected function getValue() {        return "ConcreteClass1";    }    public function prefixValue($prefix) {        return "{
   $prefix}ConcreteClass1";    }}class ConcreteClass2 extends AbstractClass{    public function getValue() {        return "ConcreteClass2";    }    public function prefixValue($prefix) {        return "{
   $prefix}ConcreteClass2";    }}$class1 = new ConcreteClass1;$class1->printOut();echo $class1->prefixValue('FOO_') . PHP_EOL;$class2 = new ConcreteClass2;$class2->printOut();echo $class2->prefixValue('FOO_') . PHP_EOL;?>

     prefixName("Pacman"), "\n";echo $class->prefixName("Pacwoman"), "\n";?>

     staticValue() . PHP_EOL;?>