How to validate phone number in Twilio using [Laravel 5.1]?

hi i am using Twilio Api to send sms to users, it gives fatal error if user's phone number is invalid. i want to validate the phone number before sending messages.
Currently i am using the following method to validate it:

public function get_web_page($url) {
            $options = array(
                CURLOPT_RETURNTRANSFER => true,   // return web page
                CURLOPT_HEADER         => false,  // don't return headers
                CURLOPT_FOLLOWLOCATION => true,   // follow redirects
                CURLOPT_MAXREDIRS      => 10,     // stop after 10 redirects
                CURLOPT_ENCODING       => "",     // handle compressed
                CURLOPT_USERAGENT      => "test", // name of client
                CURLOPT_AUTOREFERER    => true,   // set referrer on redirect
                CURLOPT_CONNECTTIMEOUT => 120,    // time-out on connect
                CURLOPT_TIMEOUT        => 120,    // time-out on response
            ); 

            $session = curl_init($url);
            curl_setopt_array($session, $options);
            $content  = curl_exec($session);

            curl_close($session);

            return $content;
        }

$response = $this->get_web_page("http://ift.tt/1PuENe3");
        $resArr = array();
        $resArr = json_decode($response)

and it works fine.

but i want to validate it using twilio's inbuilt functionality. I have searched alot on internet, but nothing helped.
Please help me to sort out this issue.

via Chebli Mohamed