This is regarding paypal through Curl. I am trying to access paypal by using below code. The code is working fine in one server. After moving this code to live server, getting the below error. Can anybody tell me the solution for this.

 $API_Endpoint = "https://api-3t.sandbox.paypal.com/nvp";
     $version = urlencode('76.0');
     $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $API_Endpoint);
        curl_setopt($ch, CURLOPT_VERBOSE, 1);

        // Turn off the server and peer verification (TrustManager Concept).
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);

        // Set the API operation, version, and API signature in the request.
        $nvpreq = "METHOD=$methodName_&VERSION=$version&PWD=$API_Password&USER=$API_UserName&SIGNATURE=$API_Signature$nvpStr_";

        // Set the request as a POST FIELD for curl.
        curl_setopt($ch, CURLOPT_POSTFIELDS, $nvpreq);

        // Get response from the server.
        $httpResponse = curl_exec($ch);

Error:

SetExpressCheckout failed: Unknown SSL protocol error in connection to api-3t.sandbox.paypal.com:443 (35)

Since the error relates to SSL, is it worth setting CURLOPT_SSL_VERIFYHOST to it's default (2) and CURLOPT_SSL_VERIFYPEER to it's default (TRUE) as a test?