Php dynamic attribute creation

Php can dynamically create attributes, which can be the same as javascript. classBook {public $ name; publicfunction _ construct ($ name) {$ varfunc_get_arg (0); if (is_int ($ var )){... php can dynamically create attributes, which can be the same as javascript.

Php code

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;

The result will be output "My Web Application ";

In addition, php overload is implemented through func_get_arg (0) and func_num_args.