/**
* ORDER BY
*
* @param string $orderby
* @param string $direction ASC, DESC or RANDOM
* @param bool $escape
* @return object
*/
public function order_by($orderby, $direction = '', $escape = NULL)
{
$direction = strtoupper(trim($direction));
if ($direction === 'RANDOM') {
if (!is_float($orderby) && ctype_digit((string) $orderby)) {
$orderby = $orderby > 1 ? (double) '0.' . $orderby : (double) $orderby;
}
if (is_float($orderby)) {
$this->simple_query('SET SEED ' . $orderby);
}
$orderby = $this->_random_keyword[0];
$direction = '';
$escape = FALSE;
}
return parent::order_by($orderby, $direction, $escape);
}
