How to upload file on another domain?

问题

I have an external hosting server.

On that server I have 2 domains:

• www.dom1.com
• www.dom2.com

On www.dom1.com I have my whole web page (in Codeigniter). One of the functionalities is upload (users can upload their files.)

On www.dom2.com there is only one folder called upload_dom2. www.dom2.com is otherwise empty and not visible anywhere on the Internet. I would like to use it exclusively for upload. I imagine that this is a much safer way than letting the users upload their files on www.dom1.com where all my other files are (by the way, let me know if I'm wrong, please).

So, how do I do that? How do I upload a file - that user has uploaded in the framework of Codeignitors system (webpage) on www.dom1.com - in a folder called upload-dom2 on www.dom2.com

I know how to upload a file in a folder called uplod_dom1 that is located on www.dom1.com. This is a code that I use.

$pathd=$_SERVER['DOCUMENT_ROOT'];
$config['upload_path'] = $pathd.'/upload_dom1';

But as said, that is not what I want. I want to upload to www.dom2.com (in its uplod-dom2 folder).

May I know what is the correct way to achieve my objective?

回答1:

Take a look at the Codeigniter FTP class. You can do this with any external website/server that supports FTP: http://ellislab.com/codeigniter/user-guide/libraries/ftp.html

Example code:

$this->load->library('ftp');

$config['hostname'] = 'ftp.example.com';
$config['username'] = 'your-username';
$config['password'] = 'your-password';
$config['debug'] = TRUE;

$this->ftp->connect($config);

$this->ftp->upload('/local/path/to/myfile.html', '/public_html/myfile.html', 'ascii', 0775);

$this->ftp->close(); 

来源：https://stackoverflow.com/questions/22632722/how-to-upload-file-on-another-domain