php下载文件

页面

$url = 'index.php?r=site/download&fn='.json_encode($filename.'.xls');  echo "<iframe src='$url' style='display:none'></iframe>";

 

方法

public function Download() {   $filedir = 'cache/';   $fn = json_decode($_GET['fn']);   $filename = iconv('utf-8','gbk',$fn);   if (!file_exists($filedir.$filename)){     header("Content-type: text/html; charset=utf-8");     echo "File not found!";     exit;   } else {    $file = fopen($filedir.$filename,"r");     header("Content-type: application/force-download");    header("Accept-Ranges: bytes");    header("Accept-Length: ".filesize($filedir.$filename));    header("Content-Disposition: attachment; filename=".$filename);    echo fread($file, filesize($filedir.$filename));    fclose($file);  } }