php 动态创建属性_PHP培训教程

　　php可以动态创建属性,可以和javascript一样。

　　Php代码：

    class Book{ 
            public $name; 
            public function __construct($name) { 
                    $var=  func_get_arg(0); 
                    if(is_int($var)){ 
                            $this->name="12345".$name; 
                    } 
                    if(is_string($name)){ 
                              $this->name=$name; 
                    } 
                   
            } 
             
    } 
     
    class Main{ 
             
            public static  function createbook($class,$config=null){ 
                    return new $class($config); 
            } 
            public function config($config){ 
                    if(is_array($config)){ 
                            foreach($config  as $key=>$val){ 
                                    $this->$key=$val; 
                            } 
                    } 
            } 
    } 
    $config=array( 
                             'name'=>'My Web Application', 
    ); 
    $main=new Main(); 
    $main->config($config); 
      echo  $main->name; 

　　结果将输出"My Web Application";

　　而且php的重载是通过func_get_arg(0) ,func_num_args()来实现的。