public static function GetCount($arFilter = array())
{
$DB = App::DB();
$sql = 'SELECT count(*) FROM ' . self::$table;
// Фильтр
if (empty($arFilter)) {
$where = "";
} else {
$where = " WHERE ";
$where .= filterGlue(filterClear($arFilter));
}
$where = str_replace(' GROUP BY ID', '', $where);
$res = $DB->Query($sql . $where);
if ($result = $DB->Fetch()) {
return array_shift($result);
}
if ($DB->Error()) {
dbError($DB->Error());
return false;
}
}
/**
* Генерация SQL-выражения из массивов
* @param array $arTables
* @param string $arOrder
* @param array $arFilter
* @param string $arSelect
* @param array $arLimit
* @return string
*/
function getListSql($arTables, $arOrder = array(), $arFilter = array(), $arSelect = array(), $arLimit = array())
{
// Таблицы
$table = "";
if (is_array($arTables)) {
if (!empty($arTables)) {
$cntTbl = 0;
foreach ($arTables as $tableAlias => $tableName) {
$cntTbl++;
$table .= " `" . $tableName . "` as " . $tableAlias;
if ($cntTbl < count($arTables)) {
$table .= ", ";
}
}
} else {
return false;
}
} else {
if (!empty($arTables)) {
$table = $arTables;
} else {
return false;
}
}
// Порядок
if (!$arOrder or empty($arOrder)) {
$arOrder = array("SORT" => "ASC");
}
$order = getOrderSql($arOrder);
// Выборка
if (!$arSelect or empty($arSelect)) {
if (count($arTables) > 1) {
$select = "DISTINCT *";
} else {
$select = "*";
}
} elseif ($arSelect = "**") {
$select = "DISTINCT *";
} else {
$select = glueArraySql($arSelect, "S");
}
// Фильтр
if (!$arFilter or empty($arFilter)) {
$where = "";
} else {
$where = "WHERE ";
$where .= filterGlue($arFilter, $arTables);
}
// Лимит
if (!$arLimit) {
$limit = "";
} else {
$limit = getLimitSql($arLimit);
}
$sql = "SELECT " . $select . " FROM " . $table . " " . $where . $order . $limit . ";";
return $sql;
}