PMA\libraries\DbQbe::_getWhereClause PHP Method

    private function _getWhereClause()
    {
        $where_clause = '';
        $criteria_cnt = 0;
        for ($column_index = 0; $column_index < $this->_criteria_column_count; $column_index++) {
            if (!empty($this->_formColumns[$column_index]) && !empty($this->_formCriterions[$column_index]) && $column_index && isset($last_where) && isset($this->_formAndOrCols)) {
                $where_clause .= ' ' . mb_strtoupper($this->_formAndOrCols[$last_where]) . ' ';
            }
            if (!empty($this->_formColumns[$column_index]) && !empty($this->_formCriterions[$column_index])) {
                $where_clause .= '(' . $this->_formColumns[$column_index] . ' ' . $this->_formCriterions[$column_index] . ')';
                $last_where = $column_index;
                $criteria_cnt++;
            }
        }
        // end for
        if ($criteria_cnt > 1) {
            $where_clause = '(' . $where_clause . ')';
        }
        // OR rows ${'cur' . $or}[$column_index]
        if (!isset($this->_formAndOrRows)) {
            $this->_formAndOrRows = array();
        }
        for ($row_index = 0; $row_index <= $this->_criteria_row_count; $row_index++) {
            $criteria_cnt = 0;
            $qry_orwhere = '';
            $last_orwhere = '';
            for ($column_index = 0; $column_index < $this->_criteria_column_count; $column_index++) {
                if (!empty($this->_formColumns[$column_index]) && !empty($_REQUEST['Or' . $row_index][$column_index]) && $column_index) {
                    $qry_orwhere .= ' ' . mb_strtoupper($this->_formAndOrCols[$last_orwhere]) . ' ';
                }
                if (!empty($this->_formColumns[$column_index]) && !empty($_REQUEST['Or' . $row_index][$column_index])) {
                    $qry_orwhere .= '(' . $this->_formColumns[$column_index] . ' ' . $_REQUEST['Or' . $row_index][$column_index] . ')';
                    $last_orwhere = $column_index;
                    $criteria_cnt++;
                }
            }
            // end for
            if ($criteria_cnt > 1) {
                $qry_orwhere = '(' . $qry_orwhere . ')';
            }
            if (!empty($qry_orwhere)) {
                $where_clause .= "\n" . mb_strtoupper(isset($this->_formAndOrRows[$row_index]) ? $this->_formAndOrRows[$row_index] . ' ' : '') . $qry_orwhere;
            }
            // end if
        }
        // end for
        if (!empty($where_clause) && $where_clause != '()') {
            $where_clause = 'WHERE ' . htmlspecialchars($where_clause) . "\n";
        }
        // end if
        return $where_clause;
    }