PHP CURL to CodeIgniter controller

here's my code:

<?php
    $url = 'http://localhost:2304/index.php/testproj/files/add/';

    $name = "test";
    $fields = array(
            'name'=>urlencode($name)
    );

    $fields_string = "";
    foreach($fields as $key=>$value) {
        $fields_string .= $key.'='.$value.'&';
    }
    rtrim($fields_string,'&');

//open connection
    $ch = curl_init();

//set the url, number of POST vars, POST data
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch,CURLOPT_POST,count($fields));
    curl_setopt($ch,CURLOPT_POSTFIELDS,$fields_string);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

//execute post
    $result = curl_exec($ch);
    var_dump($result);
//close connection
    curl_close($ch);

?>
I am trying to send post data to a CodeIgniter controller. I decided to use CURL to do the job. however, it doesn't work, when I put "blah" in my controller, it doesn't omegle.2yu.co return anything. When omeglz echat I access the URL directly, it shows "blah".