Bitrix. Авторизация по номеру телефона

Шаблон формы авторизации:

 <form id="fnt" name="system_auth_form<?=$arResult['RND']?>" method="post" target="_top" action="#"  data-ajax-href="/include/auth.php">

  <input type="hidden" name="mode" value="login" />

  <?if (strlen($arParams["BACKURL"]) > 0 || strlen($arResult["BACKURL"]) > 0):?>

  <input type="hidden" name="backurl" value="<?=($arParams["BACKURL"] ? $arParams["BACKURL"] : $arResult["BACKURL"])?>" />

  <?endif?>

  <input type="text" name="USER_LOGINt" maxlength="255" required placeholder="+7">

  <input type="password" name="USER_PASSWORD" maxlength="255">

  <input type="checkbox"  name="USER_REMEMBER" id="USER_REMEMBER" checked>

  <input type="submit" name="Login" class="" value="вход" />

 </form>

Ajax скрипт:

$(document).ready( function(){

  var form_item5 = $('#fnt');

  form_item5.validate({

   rules: {

    USER_LOGIN: {required: true}

   },

   messages: {USER_LOGIN: 'Ошибка в форме'},

   errorClass: 'error',

   validClass: 'valid',

   invalidHandler: function(event, validator) {},

   errorPlacement: function(error, element) {

    var cur = element;

    error.addClass('error-message').insertAfter(cur);

   },

   submitHandler: function(form,event) {

     var msgdata=$("#fnt").serialize();

     $.ajax({

      type: 'POST',

      url: form_item5.attr('data-ajax-href'),

      data: msgdata,

      dataType: 'json',

      success: function(result){

       if(result.status){

        $.fancybox.open('<div  id="popup-success">\

        <div class="title">Здравствуйте '+result.message+'!</div>\

        </div>',{wrapCSS: 'fancybox-popup', padding: ['0','0','0','0'], closeClick  : false,'beforeClose': function() { location.href = result.backurl; }, hideOnContentClick: false });

        form_item5.get(0).reset();

        form_item5.find('.valid').removeClass('valid');

       }

      }

     });

     event.preventDefault();

   }

  });

});

Обработчик /include/auth.php

<?

require($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php");



global $USER;

if(!is_object($USER)) $USER = new CUser;

$result = array();

$result['status'] = false;

$result['message'] = '';

if (isset($_POST['mode'])){

 $mode=htmlspecialcharsbx($_POST['mode']);

 switch($mode)

 {

 case 'login':

  if(!$USER->IsAuthorized())

  {

   $user_tel = htmlspecialcharsbx($_POST['USER_LOGINt']);

   $filter = Array("PERSONAL_PHONE" => $user_tel);

   $sql = CUser::GetList(($by="id"), ($order="desc"), $filter);

   if($sql->NavNext(true, "f_"))

   {

    if($_POST['USER_REMEMBER']=="on") $rem="Y"; else $rem="N";

    $arAuthResult = $USER->Login($f_LOGIN, $_POST['USER_PASSWORD'], $rem);

    $result['status']=true;

    $result['message']=$f_NAME;

    $result['backurl']=$_POST['backurl'];

    $APPLICATION->arAuthResult = $arAuthResult;

   }

  }

  break;

 }

}

exit(json_encode($result));
require($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/epilog_after.php");