FTP upload with cURL.

[binarynpixel]

PHP does have a FTP library, but you can also use cURL to upload files on a FTP server. Here is a working example:
// open a file pointer
$file = fopen("/path/to/file", "r");

// the url contains most of the info needed
$url = "ftp://username[email protected]:21/path/to/new/file";

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

// upload related options
curl_setopt($ch, CURLOPT_UPLOAD, 1);
curl_setopt($ch, CURLOPT_INFILE, $fp);
curl_setopt($ch, CURLOPT_INFILESIZE, filesize("/path/to/file"));

// set for ASCII mode (e.g. text files)
curl_setopt($ch, CURLOPT_FTPASCII, 1);

$output = curl_exec($ch);
curl_close($ch);