function User_isExistsLogin($login)
{
$q = "SELECT COUNT(*) FROM Users WHERE login = ?s";
$result = Database_query(User_db(), $q, $login);
if (Database_selectCell($result) > 0) {
return true;
} else {
return false;
}
}
/**
* This method get OrderList, which may be of two types:
* free orders or orders history of current user
*
* @param string('created'|'done') $status Status of required orders
*
* @param int $offset Range offset
*
* @param int $limit Count of orders for current selection
*
* @param int &$count Full count of selection for paging
*
* @return array Orders selection
*/
function Orders_getOrderList($status, $offset, $limit, &$count = NULL)
{
if (!in_array($status, Orders_getOrderStatuses())) {
return getError('wrong_order_status');
}
// set where condition:
// free orders or orders history
if ($status == 'created') {
$where = "WHERE status = 'created'";
$joinColumn = 'customer_id';
$memcache = true;
} else {
// check user auth
if (empty(User_currentUser())) {
return getError('order_history_need_auth');
}
// get users types
if (User_currentUser()['type'] == 'customer') {
$currentUserCol = 'customer_id';
$joinColumn = 'performer_id';
} else {
$currentUserCol = 'performer_id';
$joinColumn = 'customer_id';
}
$where = " WHERE status = 'done' AND {$currentUserCol} = " . intval(User_currentUser()['id']);
$memcache = false;
}
// get full count of list
if (!($memcache && Orders_mc() && ($count = MCache_get(Orders_mc(), 'Orders_count')))) {
$q = "SELECT COUNT(*) as count\n\t\t\t\t\tFROM Orders \n\t\t\t\t\t{$where}";
$result = Database_query(Orders_db(), $q, $status);
$count = Database_selectCell($result);
if ($memcache) {
MCache_set(Orders_mc(), 'Orders_count', $count);
}
}
// get current range
if ($memcache && Orders_mc()) {
$orderList = MCache_get(Orders_mc(), 'Orders_list');
}
if (empty($orderList) || $offset + $limit > sizeof($orderList)) {
$q = "SELECT Orders.id, title, description, price, customer_id, performer_id\n\t\t\t\t\tFROM Orders\n\t\t\t\t\tINNER JOIN \n\t\t\t\t\t(\n\t\t\t\t\t\tSELECT id \n\t\t\t\t\t\tFROM Orders \n\t\t\t\t\t\t{$where}\n\t\t\t\t\t\tORDER BY id DESC\n\t\t\t\t\t\tLIMIT ?i, ?i\n\t\t\t\t\t) as ids\n\t\t\t\t\tON Orders.id = ids.id\n\t\t\t\t\tORDER BY id DESC";
$result = Database_query(Orders_db(), $q, $offset, $limit);
$orders = Database_select($result);
$orderList = Orders_joinOrderList($orders, $joinColumn);
if ($memcache && $offset == 0) {
MCache_set(Orders_mc(), 'Orders_list', $orderList, 10);
}
}
return $orderList;
}