Description:
------------
Using 
curl_setopt($ch, CURLOPT_URL, "ftp://$ftp_user_name:$ftp_pass@$ftp_ip:$ftp_port$path/");

PHP CURL will connect to the wrong ftp ip/host if the username or password contains an "@" and there is no way to force it using the correct values.



Reproduce code:
---------------
$ftp_user_name = "jo@na";
$ftp_pass "bujona"; 
$ftp_ip = "19.16.144.123";
$ftp_port = "21";
$path = "";

curl_setopt($ch, CURLOPT_URL, "ftp://$ftp_user_name:$ftp_pass@$ftp_ip:$ftp_port$path/");



Expected result:
----------------
PHP CURL connecting to "ftp://jo@na:bujona@19.16.144.123:21"

Actual result:
--------------
PHP CURL uses "na:bujona@19.16.144.123" as ip/hostname

Is there any way to solve this bug?

thank you