从URL检索zip，但使用Content-Disposition文件名标识符保存到本地文件

Question

I'm trying to download a zip from an URL, with something like this:

$filename = "path/to/File.zip";
file_put_contents($filename, file_get_contents('http://example.com/Download.zip');

My problem is that I want to store that file with the filename from the Content-Disposition header, not the placeholder latest-stable . When I predefine the path it keeps that new name.

If your try to downloading following in your browser:

http://downloads.wordpress.org/plugin/jetpack.latest-stable.zip

The download dialog will reveal jetpack.3.1.1.zip , which is the filename I want, not jetpack.latest-stable.zip .

Answer 1

You have the filename already (Download.zip) so you can just:

$url = 'http://example.com/Download.zip';
$filename = basename($url);

If you have more complex URLs you can use parse_url to get the various URL components.

Edit

From the comments you provided a URL that results in a different filename. In that case you can inspect the $http_response_header array, which will be populated with the headers after the call to file_get_contents:

$data = file_get_contents('http://downloads.wordpress.org/plugin/jetpack.latest-stable.zip');
print_r($http_response_header);
/* output:
Array
(
    [0] => HTTP/1.1 200 OK
    [1] => Server: nginx
    [2] => Date: Thu, 11 Sep 2014 04:11:03 GMT
    [3] => Content-Type: application/zip
    [4] => Content-Length: 7303566
    [5] => Connection: close
    [6] => Cache-control: private
    [7] => Content-Disposition: attachment; filename=jetpack.3.1.1.zip
    [8] => Last-Modified: Wed, 10 Sep 2014 16:17:52 GMT
    [9] => X-Frame-Options: SAMEORIGIN
    [10] => X-nc: EXPIRED lax 202
    [11] => Accept-Ranges: bytes
)
*/

Look for the Content-Disposition header and strip out the filename (you can use regex and/or http_parse_headers for this).