https://oauth.vk.com/access_token?client_id=6276826&client_secret=xxxxxxx&code=xxxxxxx&redirect_uri=http%3A%2F%2Fxxxxxxx%2Fuser%2Foauth%2Fvk%2F%3Fprovider%3Dvk

        $curl = curl_init();
        curl_setopt( $curl, CURLOPT_URL, $url . '?' . http_build_query( $params ) );
        curl_setopt( $curl, CURLOPT_RETURNTRANSFER, true );
        curl_setopt( $curl, CURLOPT_HEADER, false );
        curl_setopt( $curl, CURLOPT_SSL_VERIFYHOST, false );
        curl_setopt( $curl, CURLOPT_SSL_VERIFYPEER, false );
        curl_setopt( $curl, CURLOPT_AUTOREFERER, true );
        curl_setopt( $curl, CURLOPT_FOLLOWLOCATION, true );
//        curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 1);
        $result = curl_exec( $curl );
        curl_close( $curl );