/**
  * Builds the Forms page for this Payment Gateway.
  *
  * @package optimizeMember\Menu_Pages
  * @since 1.5
  *
  * @return null
  */
 public static function authnet_forms_page()
 {
     if (c_ws_plugin__optimizemember_pro_authnet_responses::authnet_form_api_validation_errors()) {
         /* Report error if Authorize.Net Options are not yet configured. */
         c_ws_plugin__optimizemember_admin_notices::display_admin_notice('Please configure <code>optimizeMember -> Authorize.Net Options</code> first. Once all of your Authorize.Net Options are configured, return to this page &amp; generate your Authorize.net Form(s).', true);
     }
     /**/
     include_once dirname(dirname(dirname(dirname(__FILE__)))) . "/menu-pages/authnet-forms.inc.php";
     /**/
     return;
     /* Return for uniformity. */
 }
 /**
  * Validates different kinds of form submissions.
  *
  * Free Registration Forms do NOT require API Credentials.
  *
  * @package optimizeMember\AuthNet
  * @since 1.5
  *
  * @param str $form The type of Pro Form being submitted.
  * @param array $s An array of data submitted through the Pro Form.
  * @return null|array Null if there are no errors, else a response array.
  */
 public static function authnet_form_submission_validation_errors($form = FALSE, $s = FALSE)
 {
     if ($form === "registration" || !($response = c_ws_plugin__optimizemember_pro_authnet_responses::authnet_form_api_validation_errors())) {
         if ($form === "cancellation") {
             if (!is_user_logged_in()) {
                 $response = array("response" => sprintf(_x('You must <a href="%s" rel="nofollow">log in</a> to cancel your account.', "s2member-front", "s2member"), esc_attr(wp_login_url($_SERVER["REQUEST_URI"]))), "error" => true);
             } else {
                 if ($s["attr"]["captcha"] && (!$s["recaptcha_challenge_field"] || !$s["recaptcha_response_field"] || !c_ws_plugin__optimizemember_utils_captchas::recaptcha_code_validates($s["recaptcha_challenge_field"], $s["recaptcha_response_field"]))) {
                     $response = array("response" => _x('Missing or invalid Security Code. Please try again.', "s2member-front", "s2member"), "error" => true);
                 } else {
                     if (is_object($user = wp_get_current_user()) && $user->ID && $user->has_cap("administrator")) {
                         /* NOT for Administrators. */
                         $response = array("response" => _x('Unable to process. You are an Administrator. Stopping here for security. Otherwise, an Administrator could lose access.', "s2member-admin", "s2member"), "error" => true);
                     }
                 }
             }
         } else {
             if ($form === "update") {
                 if (!is_user_logged_in()) {
                     $response = array("response" => sprintf(_x('You must <a href="%s" rel="nofollow">log in</a> to update your billing information.', "s2member-front", "s2member"), esc_attr(wp_login_url($_SERVER["REQUEST_URI"]))), "error" => true);
                 } else {
                     if (is_object($user = wp_get_current_user()) && $user->ID && $user->has_cap("administrator")) {
                         /* NOT for Administrators. */
                         $response = array("response" => _x('Unable to process. You are an Administrator. Stopping here for security. Otherwise, an Administrator could lose access.', "s2member-admin", "s2member"), "error" => true);
                     } else {
                         if (!$s["card_type"] || !is_string($s["card_type"])) {
                             $response = array("response" => _x('Missing Card Type ( Billing Method ). Please try again.', "s2member-front", "s2member"), "error" => true);
                         } else {
                             if (!in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) || !is_array($s["attr"]["accept"]) || !in_array(strtolower($s["card_type"]), $s["attr"]["accept"])) {
                                 $response = array("response" => _x('Invalid Card Type ( Billing Method ). Please try again.', "s2member-front", "s2member"), "error" => true);
                             } else {
                                 if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["card_number"] || !is_string($s["card_number"]))) {
                                     $response = array("response" => _x('Missing Card Number. Please try again.', "s2member-front", "s2member"), "error" => true);
                                 } else {
                                     if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["card_expiration"] || !is_string($s["card_expiration"]))) {
                                         $response = array("response" => _x('Missing Card Expiration Date ( mm/yyyy ). Please try again.', "s2member-front", "s2member"), "error" => true);
                                     } else {
                                         if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && !preg_match("/^[0-9]{2}\\/[0-9]{4}\$/", $s["card_expiration"])) {
                                             $response = array("response" => _x('Invalid Card Expiration Date. Must be in this format ( mm/yyyy ). Please try again.', "s2member-front", "s2member"), "error" => true);
                                         } else {
                                             if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["card_verification"] || !is_string($s["card_verification"]))) {
                                                 $response = array("response" => _x('Missing Card Verification Code. It\'s on the back of your Card. 3-4 digits. Please try again.', "s2member-front", "s2member"), "error" => true);
                                             } else {
                                                 if (in_array($s["card_type"], array("Maestro", "Solo")) && (!$s["card_start_date_issue_number"] || !is_string($s["card_start_date_issue_number"]))) {
                                                     $response = array("response" => _x('Missing Card Start Date, or Issue #. Required for Maestro/Solo. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                 } else {
                                                     if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["street"] || !is_string($s["street"]))) {
                                                         $response = array("response" => _x('Missing Street Address. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                     } else {
                                                         if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["city"] || !is_string($s["city"]))) {
                                                             $response = array("response" => _x('Missing City/Town. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                         } else {
                                                             if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["state"] || !is_string($s["state"]))) {
                                                                 $response = array("response" => _x('Missing State/Province. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                             } else {
                                                                 if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["country"] || !is_string($s["country"]))) {
                                                                     $response = array("response" => _x('Missing Country. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                 } else {
                                                                     if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["zip"] || !is_string($s["zip"]))) {
                                                                         $response = array("response" => _x('Missing Postal/Zip Code. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                     } else {
                                                                         if ($s["attr"]["captcha"] && (!$s["recaptcha_challenge_field"] || !$s["recaptcha_response_field"] || !c_ws_plugin__optimizemember_utils_captchas::recaptcha_code_validates($s["recaptcha_challenge_field"], $s["recaptcha_response_field"]))) {
                                                                             $response = array("response" => _x('Missing or invalid Security Code. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                         }
                                                                     }
                                                                 }
                                                             }
                                                         }
                                                     }
                                                 }
                                             }
                                         }
                                     }
                                 }
                             }
                         }
                     }
                 }
             } else {
                 if ($form === "registration") {
                     if ($GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["custom_reg_names"] && (!$s["first_name"] || !is_string($s["first_name"]))) {
                         $response = array("response" => _x('Missing First Name. Please try again.', "s2member-front", "s2member"), "error" => true);
                     } else {
                         if ($GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["custom_reg_names"] && (!$s["last_name"] || !is_string($s["last_name"]))) {
                             $response = array("response" => _x('Missing Last Name. Please try again.', "s2member-front", "s2member"), "error" => true);
                         } else {
                             if (!$s["email"] || !is_string($s["email"])) {
                                 $response = array("response" => _x('Missing or invalid Email Address. Please try again.', "s2member-front", "s2member"), "error" => true);
                             } else {
                                 if (!is_email($s["email"])) {
                                     $response = array("response" => _x('Invalid Email Address. Please try again.', "s2member-front", "s2member"), "error" => true);
                                 } else {
                                     if (email_exists($s["email"]) && (!is_multisite() || !c_ws_plugin__optimizemember_utils_users::ms_user_login_email_can_join_blog($s["username"], $s["email"]))) {
                                         $response = array("response" => _x('That Email Address is already in use. Please try again.', "s2member-front", "s2member"), "error" => true);
                                     } else {
                                         if (!$s["username"] || !is_string($s["username"])) {
                                             $response = array("response" => _x('Missing or invalid Username. Please try again.', "s2member-front", "s2member"), "error" => true);
                                         } else {
                                             if (!validate_username($s["username"])) {
                                                 $response = array("response" => _x('Invalid Username. Please try again. Use ONLY lowercase alphanumerics.', "s2member-front", "s2member"), "error" => true);
                                             } else {
                                                 if (username_exists($s["username"]) && (!is_multisite() || !c_ws_plugin__optimizemember_utils_users::ms_user_login_email_can_join_blog($s["username"], $s["email"]))) {
                                                     $response = array("response" => _x('That Username is already in use. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                 } else {
                                                     if (is_multisite() && !c_ws_plugin__optimizemember_utils_users::ms_user_login_email_can_join_blog($s["username"], $s["email"]) && ($_response = wpmu_validate_user_signup($s["username"], $s["email"])) && is_wp_error($_errors = $_response["errors"]) && $_errors->get_error_message()) {
                                                         $response = array("response" => $_errors->get_error_message(), "error" => true);
                                                     } else {
                                                         if ((!$s["password1"] || !is_string($s["password1"])) && $GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["custom_reg_password"]) {
                                                             $response = array("response" => _x('Missing Password. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                         } else {
                                                             if (strlen($s["password1"]) < 6 && $GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["custom_reg_password"]) {
                                                                 $response = array("response" => _x('Invalid Password. Must be at least 6 characters. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                             } else {
                                                                 if (strlen($s["password1"]) > 20 && $GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["custom_reg_password"]) {
                                                                     $response = array("response" => _x('Invalid Password. Max length is 20 characters. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                 } else {
                                                                     if ($s["password2"] !== $s["password1"] && $GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["custom_reg_password"]) {
                                                                         $response = array("response" => _x('Password fields do NOT match. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                     } else {
                                                                         if ($s["attr"]["captcha"] && (!$s["recaptcha_challenge_field"] || !$s["recaptcha_response_field"] || !c_ws_plugin__optimizemember_utils_captchas::recaptcha_code_validates($s["recaptcha_challenge_field"], $s["recaptcha_response_field"]))) {
                                                                             $response = array("response" => _x('Missing or invalid Security Code. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                         }
                                                                     }
                                                                 }
                                                             }
                                                         }
                                                     }
                                                 }
                                             }
                                         }
                                     }
                                 }
                             }
                         }
                     }
                 } else {
                     if ($form === "sp-checkout") {
                         if (!$s["first_name"] || !is_string($s["first_name"])) {
                             $response = array("response" => _x('Missing First Name. Please try again.', "s2member-front", "s2member"), "error" => true);
                         } else {
                             if (!$s["last_name"] || !is_string($s["last_name"])) {
                                 $response = array("response" => _x('Missing Last Name. Please try again.', "s2member-front", "s2member"), "error" => true);
                             } else {
                                 if (!$s["email"] || !is_string($s["email"])) {
                                     $response = array("response" => _x('Missing or invalid Email Address. Please try again.', "s2member-front", "s2member"), "error" => true);
                                 } else {
                                     if (!is_email($s["email"])) {
                                         $response = array("response" => _x('Invalid Email Address. Please try again.', "s2member-front", "s2member"), "error" => true);
                                     } else {
                                         if (!$s["card_type"] || !is_string($s["card_type"])) {
                                             $response = array("response" => _x('Missing Card Type ( Billing Method ). Please try again.', "s2member-front", "s2member"), "error" => true);
                                         } else {
                                             if (!in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) || !is_array($s["attr"]["accept"]) || !in_array(strtolower($s["card_type"]), $s["attr"]["accept"])) {
                                                 $response = array("response" => _x('Invalid Card Type ( Billing Method ). Please try again.', "s2member-front", "s2member"), "error" => true);
                                             } else {
                                                 if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["card_number"] || !is_string($s["card_number"]))) {
                                                     $response = array("response" => _x('Missing Card Number. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                 } else {
                                                     if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["card_expiration"] || !is_string($s["card_expiration"]))) {
                                                         $response = array("response" => _x('Missing Card Expiration Date ( mm/yyyy ). Please try again.', "s2member-front", "s2member"), "error" => true);
                                                     } else {
                                                         if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && !preg_match("/^[0-9]{2}\\/[0-9]{4}\$/", $s["card_expiration"])) {
                                                             $response = array("response" => _x('Invalid Card Expiration Date. Must be in this format ( mm/yyyy ). Please try again.', "s2member-front", "s2member"), "error" => true);
                                                         } else {
                                                             if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["card_verification"] || !is_string($s["card_verification"]))) {
                                                                 $response = array("response" => _x('Missing Card Verification Code. It\'s on the back of your Card. 3-4 digits. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                             } else {
                                                                 if (in_array($s["card_type"], array("Maestro", "Solo")) && (!$s["card_start_date_issue_number"] || !is_string($s["card_start_date_issue_number"]))) {
                                                                     $response = array("response" => _x('Missing Card Start Date, or Issue #. Required for Maestro/Solo. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                 } else {
                                                                     if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["street"] || !is_string($s["street"]))) {
                                                                         $response = array("response" => _x('Missing Street Address. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                     } else {
                                                                         if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["city"] || !is_string($s["city"]))) {
                                                                             $response = array("response" => _x('Missing City/Town. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                         } else {
                                                                             if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["state"] || !is_string($s["state"]))) {
                                                                                 $response = array("response" => _x('Missing State/Province. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                             } else {
                                                                                 if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["country"] || !is_string($s["country"]))) {
                                                                                     $response = array("response" => _x('Missing Country. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                 } else {
                                                                                     if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["zip"] || !is_string($s["zip"]))) {
                                                                                         $response = array("response" => _x('Missing Postal/Zip Code. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                     } else {
                                                                                         if ($s["attr"]["captcha"] && (!$s["recaptcha_challenge_field"] || !$s["recaptcha_response_field"] || !c_ws_plugin__optimizemember_utils_captchas::recaptcha_code_validates($s["recaptcha_challenge_field"], $s["recaptcha_response_field"]))) {
                                                                                             $response = array("response" => _x('Missing or invalid Security Code. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                         }
                                                                                     }
                                                                                 }
                                                                             }
                                                                         }
                                                                     }
                                                                 }
                                                             }
                                                         }
                                                     }
                                                 }
                                             }
                                         }
                                     }
                                 }
                             }
                         }
                     } else {
                         if ($form === "checkout") {
                             if ($s["attr"]["modify"] && !is_user_logged_in()) {
                                 $response = array("response" => sprintf(_x('You must <a href="%s" rel="nofollow">log in</a> to modify your billing plan.', "s2member-front", "s2member"), esc_attr(wp_login_url($_SERVER["REQUEST_URI"]))), "error" => true);
                             } else {
                                 if ($s["attr"]["level"] === "*" && !is_user_logged_in()) {
                                     $response = array("response" => sprintf(_x('You must <a href="%s" rel="nofollow">log in</a> before making this purchase.', "s2member-front", "s2member"), esc_attr(wp_login_url($_SERVER["REQUEST_URI"]))), "error" => true);
                                 } else {
                                     if (is_user_logged_in() && is_object($user = wp_get_current_user()) && $user->ID && $user->has_cap("administrator")) {
                                         /* NOT for Administrators. */
                                         $response = array("response" => _x('Unable to process. You are an Administrator. Stopping here for security. Otherwise, an Administrator could lose access.', "s2member-admin", "s2member"), "error" => true);
                                     } else {
                                         if (!$s["first_name"] || !is_string($s["first_name"])) {
                                             $response = array("response" => _x('Missing First Name. Please try again.', "s2member-front", "s2member"), "error" => true);
                                         } else {
                                             if (!$s["last_name"] || !is_string($s["last_name"])) {
                                                 $response = array("response" => _x('Missing Last Name. Please try again.', "s2member-front", "s2member"), "error" => true);
                                             } else {
                                                 if (!is_user_logged_in() && (!$s["email"] || !is_string($s["email"]))) {
                                                     $response = array("response" => _x('Missing or invalid Email Address. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                 } else {
                                                     if (!is_user_logged_in() && !is_email($s["email"])) {
                                                         $response = array("response" => _x('Invalid Email Address. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                     } else {
                                                         if (!is_user_logged_in() && email_exists($s["email"]) && (!is_multisite() || !c_ws_plugin__optimizemember_utils_users::ms_user_login_email_can_join_blog($s["username"], $s["email"]))) {
                                                             $response = array("response" => _x('That Email Address is already in use. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                         } else {
                                                             if (!is_user_logged_in() && (!$s["username"] || !is_string($s["username"]))) {
                                                                 $response = array("response" => _x('Missing or invalid Username. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                             } else {
                                                                 if (!is_user_logged_in() && !validate_username($s["username"])) {
                                                                     $response = array("response" => _x('Invalid Username. Please try again. Use ONLY lowercase alphanumerics.', "s2member-front", "s2member"), "error" => true);
                                                                 } else {
                                                                     if (!is_user_logged_in() && username_exists($s["username"]) && (!is_multisite() || !c_ws_plugin__optimizemember_utils_users::ms_user_login_email_can_join_blog($s["username"], $s["email"]))) {
                                                                         $response = array("response" => _x('That Username is already in use. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                     } else {
                                                                         if (!is_user_logged_in() && is_multisite() && !c_ws_plugin__optimizemember_utils_users::ms_user_login_email_can_join_blog($s["username"], $s["email"]) && ($_response = wpmu_validate_user_signup($s["username"], $s["email"])) && is_wp_error($_errors = $_response["errors"]) && $_errors->get_error_message()) {
                                                                             $response = array("response" => $_errors->get_error_message(), "error" => true);
                                                                         } else {
                                                                             if (!is_user_logged_in() && (!$s["password1"] || !is_string($s["password1"])) && $GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["custom_reg_password"]) {
                                                                                 $response = array("response" => _x('Missing Password. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                             } else {
                                                                                 if (!is_user_logged_in() && strlen($s["password1"]) < 6 && $GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["custom_reg_password"]) {
                                                                                     $response = array("response" => _x('Invalid Password. Must be at least 6 characters. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                 } else {
                                                                                     if (!is_user_logged_in() && strlen($s["password1"]) > 20 && $GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["custom_reg_password"]) {
                                                                                         $response = array("response" => _x('Invalid Password. Max length is 20 characters. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                     } else {
                                                                                         if (!is_user_logged_in() && $s["password2"] !== $s["password1"] && $GLOBALS["WS_PLUGIN__"]["optimizemember"]["o"]["custom_reg_password"]) {
                                                                                             $response = array("response" => _x('Password fields do NOT match. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                         } else {
                                                                                             if (!$s["card_type"] || !is_string($s["card_type"])) {
                                                                                                 $response = array("response" => _x('Missing Card Type ( Billing Method ). Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                             } else {
                                                                                                 if (!in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) || !is_array($s["attr"]["accept"]) || !in_array(strtolower($s["card_type"]), $s["attr"]["accept"])) {
                                                                                                     $response = array("response" => _x('Invalid Card Type ( Billing Method ). Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                                 } else {
                                                                                                     if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["card_number"] || !is_string($s["card_number"]))) {
                                                                                                         $response = array("response" => _x('Missing Card Number. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                                     } else {
                                                                                                         if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["card_expiration"] || !is_string($s["card_expiration"]))) {
                                                                                                             $response = array("response" => _x('Missing Card Expiration Date ( mm/yyyy ). Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                                         } else {
                                                                                                             if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && !preg_match("/^[0-9]{2}\\/[0-9]{4}\$/", $s["card_expiration"])) {
                                                                                                                 $response = array("response" => _x('Invalid Card Expiration Date. Must be in this format ( mm/yyyy ). Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                                             } else {
                                                                                                                 if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["card_verification"] || !is_string($s["card_verification"]))) {
                                                                                                                     $response = array("response" => _x('Missing Card Verification Code. It\'s on the back of your Card. 3-4 digits. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                                                 } else {
                                                                                                                     if (in_array($s["card_type"], array("Maestro", "Solo")) && (!$s["card_start_date_issue_number"] || !is_string($s["card_start_date_issue_number"]))) {
                                                                                                                         $response = array("response" => _x('Missing Card Start Date, or Issue #. Required for Maestro/Solo. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                                                     } else {
                                                                                                                         if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["street"] || !is_string($s["street"]))) {
                                                                                                                             $response = array("response" => _x('Missing Street Address. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                                                         } else {
                                                                                                                             if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["city"] || !is_string($s["city"]))) {
                                                                                                                                 $response = array("response" => _x('Missing City/Town. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                                                             } else {
                                                                                                                                 if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["state"] || !is_string($s["state"]))) {
                                                                                                                                     $response = array("response" => _x('Missing State/Province. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                                                                 } else {
                                                                                                                                     if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["country"] || !is_string($s["country"]))) {
                                                                                                                                         $response = array("response" => _x('Missing Country. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                                                                     } else {
                                                                                                                                         if (in_array($s["card_type"], array("Visa", "MasterCard", "Discover", "Amex", "Maestro", "Solo")) && (!$s["zip"] || !is_string($s["zip"]))) {
                                                                                                                                             $response = array("response" => _x('Missing Postal/Zip Code. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                                                                         } else {
                                                                                                                                             if ($s["attr"]["captcha"] && (!$s["recaptcha_challenge_field"] || !$s["recaptcha_response_field"] || !c_ws_plugin__optimizemember_utils_captchas::recaptcha_code_validates($s["recaptcha_challenge_field"], $s["recaptcha_response_field"]))) {
                                                                                                                                                 $response = array("response" => _x('Missing or invalid Security Code. Please try again.', "s2member-front", "s2member"), "error" => true);
                                                                                                                                             }
                                                                                                                                         }
                                                                                                                                     }
                                                                                                                                 }
                                                                                                                             }
                                                                                                                         }
                                                                                                                     }
                                                                                                                 }
                                                                                                             }
                                                                                                         }
                                                                                                     }
                                                                                                 }
                                                                                             }
                                                                                         }
                                                                                     }
                                                                                 }
                                                                             }
                                                                         }
                                                                     }
                                                                 }
                                                             }
                                                         }
                                                     }
                                                 }
                                             }
                                         }
                                     }
                                 }
                             }
                         } else {
                             /* Else we are dealing with an unknown form submission type. */
                             $response = array("response" => _x('Unknown form submission type. Please contact Support.', "s2member-front", "s2member"), "error" => true);
                         }
                     }
                 }
             }
         }
     }
     /**/
     return empty($response) ? null : $response;
 }