How can I send variables from a PHP script to another URL?

[Sick Dwarf]

You would have to open a direct connection with the server you would want to connect to, and manually send the HTTP POST request containing the variables.

Here's a small function which should be able to handle this.

function post_page($host, $path, $post_data)
{
	// Opens a connection to the server
	$fp = fsockopen($host, 80, &$error_number, &$error_string, 120);

	// Trigger an error if we failed to connect, else continue
	if (!$fp)
	{
		trigger_error('Connection error: ' . $error_string . ' (' . $error_number . ')', E_USER_ERROR);
		return FALSE;
	}

	// See how many bytes our POST data is
	$data_length = strlen($post_data);

	// Send our HTTP POST request to the server
	fputs($fp, "POST $path HTTP/1.1\r\n");
	fputs($fp, "Host: $host\r\n");
	fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
	fputs($fp, "Content-length: $data_length\r\n");
	fputs($fp, "Connection: close\r\n\r\n");
	fputs($fp, $post_data);

	// As long as the server returns data, keep getting it in 1k chunks
	$output = '';
	while(!feof($fp))
	{
		$output .= fgets($fp, 1024);
	}

	// Close the connection
	fclose($fp);

	// Return any data returned by the server
	return $output;
}

The above function accepts 3 variables. The $host variable should contain the hostname of the server, ie "www.example.com" or "example.com" without the protocol or leading slash. The $path variable should contain the path to the script you want the data to be posted to. For instance, "/foo/bar/script.php" or "/cgi/process_this.cgi". Finally, the $post_data variable should contain a string which specifies the data you want to post. This is easier to explain by showing an example.

For instance, if you would use the following function with the following $post_data value:

variable_name=value&variable_name2=578&variable_name3=me

The script you'd contact would have access to 3 POST variables called "variable_name", "variable_name2", and "variable_name3", with the values "value", "578", and "me" respectively.

I have not tested the function, but it should work. If you have any problems, reply or PM me.