php文件下载

1.jpg
2.jpg
3.jpg
1.png

'image/jpeg',
    'jpeg' => 'image/jpeg',
    'png' => 'image/png',
    'gif' => 'image/gif',
    'txt' => 'text/plain',
    'html' => 'text/html',
    'php' => 'text/plain',
    'zip' => 'application/zip',
);
//下载设定
header('Content-Type:'.$type[$ext]);
//文件名
header('Content-Disposition: attachment;filename="'.$name.'"');
header('Content-Cength:'.filesize('./img/'.$name));
//下载资源位置
readfile('./img'.$name);