Выявлено ошибок: 1 ошибка :
этот e-mail адрес уже зарегистрирован

protected    $fieldsRequired = array('phone_mobile',);

<form action="{$request_uri|escape:'htmlall':'UTF-8'|replace:'&amp;':'&'}" method="post" id="account-creation_form" class="std">
        <fieldset class="account_creation">
            <h3>{l s='Your personal information'}</h3>

            <input  type="hidden" class="text" id="customer_firstname" name="customer_firstname" value="{if isset($smarty.post.firstname)}{$smarty.post.firstname}{else}{$customer_firstname}{/if}" />
            <input  type="hidden" class="text" id="customer_lastname" name="customer_lastname" value="{if isset($smarty.post.lastname)}{$smarty.post.lastname}{else}{$customer_lastname}{/if}" />
            <input type="hidden" class="text" id="email" name="email" value="{if isset($smarty.post.email)}{$smarty.post.email}{else}{$email}{/if}" />
            <input type="hidden" class="text" name="passwd" id="passwd" value="{$pass_noname}" />
            <p class="text">
                <label for="firstname">{l s='First name'}</label>
                <input type="text" class="text" id="firstname" name="firstname" value="{if isset($smarty.post.firstname)}{$smarty.post.firstname}{/if}" />                
            </p>            
            <p class="textarea">
                <label for="other">{l s='Additional information'}</label>
                <textarea name="other" id="other" cols="26" rows="3">{if isset($smarty.post.other)}{$smarty.post.other}{/if}</textarea>
            </p>
            <p class="required text">
                <label for="phone_mobile">{l s='Mobile phone'}</label>
                <input type="text" class="text" name="phone_mobile" id="phone_mobile" value="{if isset($smarty.post.phone_mobile)}{$smarty.post.phone_mobile}{/if}" />
            ^*
            </p>
            <input type="hidden" class="text" name="alias" id="alias" value="{if isset($smarty.post.address_noname)}{$smarty.post.address_noname}{else}{$address_noname}{/if}" />
            <input type="hidden" class="text" name="create_noname" id="create_noname" value="1" />
        </fieldset>
        {$HOOK_CREATE_ACCOUNT_FORM}
        <p class="cart_navigation required submit">
            <input type="hidden" name="email_create" value="1" />
            <input type="submit" name="submitAccount" id="submitAccount" value="{l s='Register'}" class="exclusive" />
            <span>^*{l s='Required field'}</span>
        </p>

    </form>

$validateDni = Validate::isDni(Tools::getValue('dni'));

$_POST['email'] = rand(1,100000).'@myshop.ru';

$email=...;
$customer = new Customer();
$authentication = $customer->getByEmail(trim($email));
if (!$authentication OR !$customer->id)
    //Старый код (создаем акк)
else
{
    $cookie->id_customer = intval($customer->id);
    $cookie->customer_lastname = $customer->lastname;
    $cookie->customer_firstname = $customer->firstname;
    $cookie->logged = 1;
    $cookie->passwd = $customer->passwd;
    $cookie->email = $customer->email;
    if (Configuration::get('PS_CART_FOLLOWING') AND (empty($cookie->id_cart) OR Cart::getNbProducts($cookie->id_cart) == 0))
        $cookie->id_cart = intval(Cart::lastNoneOrderedCart(intval($customer->id)));
}