CI_DB_driver::count_all PHP Method

    public function count_all($table = '')
    {
        if ($table === '') {
            return 0;
        }
        $query = $this->query($this->_count_string . $this->escape_identifiers('numrows') . ' FROM ' . $this->protect_identifiers($table, TRUE, NULL, FALSE));
        if ($query->num_rows() === 0) {
            return 0;
        }
        $query = $query->row();
        $this->_reset_select();
        return (int) $query->numrows;
    }