phpファイル削除

//      
	function deletefile(){
		$info=$this->input->post("info");
		$filepath=$info['filepath'];
		define('DATAPATH', str_replace("\\","/",dirname(dirname(dirname(__FILE__)))));
		$file=DATAPATH.$filepath;
		//echo $file;
		$rest=array();
		if(file_exists($file)){
			if(unli

nk($file)){
				$rest['code']='0000';
				$rest['msg']="    ";

			}else{
				$rest['code']='0001';
				$rest['msg']="    ";
			};
		}
		else{
			$rest['code']='0002';
			$rest['msg']="      ";
		}
		echo json_encode($rest);
	}