php通过魔术方法__call实现类函数重载

class Templates {
 <span style="white-space:pre">	</span>function __call($fun,$argv){
    	<span style="white-space:pre">	</span>if($fun=="assign"){
    		<span style="white-space:pre">	</span>if(count($argv)==1){
    			<span style="white-space:pre">	</span>$this->assign1($argv[0]);
    		<span style="white-space:pre">	</span>}
    		elseif(count($argv)==2){
    			$this->assign2($argv[0],$argv[1]);
    		}
    	}
    }
 //assign函数接受参数
  function assign2($key,$value){
  			if(isset($key)&&!empty($value)){
  				$this->val["$key"]=$value;
  			}else{
  				exit("ERROR:请设置变量");
  			}
  }
  //重载assign函数接受数组
  function assign1($array){
  			if(!empty($array)){
  				foreach($array as $key => $value){
  					$this->val["$key"]=$value;
  				}
  			}else{
  				exit("ERROR:请设置数组");
  			}
  }
}