$message .= " * Database User Name is empty!" . "<br>";
     $error = true;
 }
 if (trim($user_data['txtSiteName']) == '') {
     $message .= " * Site Name is empty!" . "<br>";
     $error = true;
 }
 if (trim($user_data['txtLicenseKey']) == '') {
     $message .= " * License Key is empty!" . "<br>";
     $error = true;
 }
 if (trim($user_data['txtAdminEmail']) == '') {
     $message .= " * Admin Email is empty!" . "<br>";
     $error = true;
 } else {
     if (!ServerConfig::is_valid_email($user_data['txtAdminEmail'])) {
         $message .= " * Invalid Admin Email!" . "<br>";
         $error = true;
     }
 }
 //check the db connection
 $connection = @mysql_connect($user_data['txtDBServerName'], $user_data['txtDBUserName'], $user_data['txtDBPassword']);
 if ($connection === false) {
     $error = true;
     $message .= " * Connection Not Successful! Please verify your database details!<br>";
 } else {
     $dbselected = @mysql_select_db($user_data['txtDBName'], $connection);
     if (!$dbselected) {
         $error = true;
         $message .= " * Database could not be selected! Please verify your database details!<br>";
     }