Question

我使用mysqli_multi_query()函数并以这样的方式获取两个查询的结果：所有第一个查询结果都是按日期排序的第一和第二查询。

这是我的疑问：

$query = "SELECT 
            `b`.`class_name`, 
            `c`.`main_code`,`c`.`account_title`, 
            `a`.`ledger_entry`, `a`.`balance` AS `debit`, `a`.`date`, `a`.`v.no`, `a`.`interactive_person` 
         FROM `vouchers` AS `a`,`classes` AS `b`, `data` AS `c` 
         WHERE `a`.`post_status`='yes' 
           AND `a`.`cancel_status`='off' 
           AND `a`.`type`='CP' 
           AND `a`.`class_id` = `b`.`class_id` 
           AND `a`.`account_id`=`c`.`account_code` 
           AND `a`.`date` BETWEEN '$fromDate' AND '$toDate';";
$query .= "SELECT 
             `b`.`class_name`, 
             `c`.`main_code`,`c`.`account_title`, 
             `a`.`ledger_entry`, sum(`a`.`balance`) AS `credit`, `a`.`date`, `a`.`v.no`, `a`.`interactive_person` 
           FROM `vouchers` AS `a`,`classes` AS `b`,`data` AS `c` 
           WHERE `a`.`post_status`='yes' 
             AND `a`.`cancel_status`='off' 
             AND `a`.`type`='CP' 
             AND `a`.`class_id` = `b`.`class_id` 
             AND `a`.`interactive_person`=`c`.`main_code` 
             AND `a`.`date` BETWEEN '$fromDate' AND '$toDate' GROUP BY `v.no`;";

这是两个查询，现在让我向您展示我使用多查询功能的方式：

if (mysqli_multi_query($con, $query)) {
    do {
        // Store first result set
        if ($result = mysqli_store_result($con)) {
            // Fetch one and one row
            while ($row = mysqli_fetch_assoc($result)) {
                if ($y > 700) {
                    $y = 30;
                    $pdf->AddPage();
                    $x = 36;
                }
                $y = $y + 18;
                $x = 10;

                $debit = 0;
                $credit = $row['credit'];
                if($credit==""){$credit = 0;}
                $debit = $row['debit'];
                if($debit==""){$debit = 0;}

                $pdf->SetFont('Times', 'B', 12, '', true);
                $pdf->MultiCell(70, 18, $row['date'], 1, 'L', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
                $x = $x + 70;
                $pdf->SetFont('Times', '', 12, '', true);
                $pdf->MultiCell(50, 18, $row['v.no'], 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
                $x = $x + 50;
                $pdf->MultiCell(100, 18, $row['main_code'], 1, 'L', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
                $x = $x + 70;
                $pdf->MultiCell(100, 18, $row['account_title'], 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
                $x = $x + 100;
                $pdf->MultiCell(100, 18, $row['class_name'], 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
                $x = $x + 100;
                $pdf->MultiCell(120, 18,$credit , 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
                $x = $x + 120;
                $pdf->MultiCell(80, 18, $debit , 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);

            }
            // Free result set
            mysqli_free_result($result);
        }
    } while (mysqli_next_result($con));
}

一切正常，我得到的pdf输出为：

因此，现在我要做的是按“参考号”或“日期”对我获得的订单的详细信息进行排序。

我该怎么办？我可以使用任何php函数吗？还是应该更改从数据库中获取数据的技术？

Answer 1

您可以修改查询语句。例如，只需在每个SQL查询的末尾附加“ ORDER BY ref_number ASC”即可。

ASC代表升序（从小到大），DESC代表降序（从大到小）

Answer 2

直接排序数组

while ($row = mysqli_fetch_assoc($result)) {

    foreach ($row as $r) {
        $dates[] = $r['date'];
    }

    array_multisort($row, SORT_ASC, $dates);

......

}

Answer 3

执行查询后，将数据存储在数组中，然后对其进行排序，并按照我想要的方式工作，所以答案是

$pdf->SetFont('Times', 'B', 12, '', true);

$y = $y + 20;
$pdf->MultiCell(200, 18, 'Cash Payment Vouchers', 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
$y = $y + 20;
$pdf->MultiCell(70, 18, 'Date', 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
$x = $x + 70;
$pdf->MultiCell(50, 18, 'Ref.No', 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
$x = $x + 50;
$pdf->MultiCell(70, 18, 'Code', 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
$x = $x + 70;
$pdf->MultiCell(100, 18, 'Account Title', 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
$x = $x + 100;
$pdf->MultiCell(100, 18, 'Class', 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
$x = $x + 100;
$pdf->MultiCell(120, 18, 'Credit', 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
$x = $x + 120;
$pdf->MultiCell(80, 18, 'Debit', 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
if (mysqli_multi_query($con, $query)) {
    do {
        // Store first result set
        if ($result = mysqli_store_result($con)) {
            // Fetch one and one row

            while ($row = mysqli_fetch_assoc($result)) {
                $a[] = $row;
                $vNo[] = $row['date'];

                array_multisort($a, SORT_ASC, $vNo);
            }
            // Free result set
            mysqli_free_result($result);
        }
    } while (mysqli_next_result($con));
    array_multisort($a, SORT_ASC, $vNo);
    foreach ($a as $ro) {
        if ($y > 700) {
        $y = 30;
        $pdf->AddPage();
        $x = 10;
    }
        $debit = 0;
        $credit = $ro['credit'];
        if ($credit == "") {
            $credit = 0;
        }
        $debit = $ro['debit'];
        if ($debit == "") {
            $debit = 0;
        }
        $y = $y + 18;
        $x = 10;
        $pdf->SetFont('Times', 'B', 12, '', true);
        $pdf->MultiCell(70, 18, $ro['date'], 1, 'L', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
        $x = $x + 70;
        $pdf->SetFont('Times', '', 12, '', true);
        $pdf->MultiCell(50, 18, $ro['v.no'], 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
        $x = $x + 50;
        $pdf->MultiCell(100, 18, $ro['main_code'], 1, 'L', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
        $x = $x + 70;
        $pdf->MultiCell(100, 18, $ro['account_title'], 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
        $x = $x + 100;
        $pdf->MultiCell(100, 18, $ro['class_name'], 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
        $x = $x + 100;
        $pdf->MultiCell(120, 18, $credit, 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
        $x = $x + 120;
        $pdf->MultiCell(80, 18, $debit, 1, 'C', true, 1, $x, $y, true, 0, false, true, 0, 'T', false);
        $sum += $credit;
    }
}
$y = $y + 20;
$pdf->MultiCell(390, 18, 'Total :', 1, 'R', true, 1, '10', $y, true, 0, false, true, 0, 'T', false);
$pdf->MultiCell(120, 18, $sum, 1, 'C', true, 1, '400', $y, true, 0, false, true, 0, 'T', false);
$pdf->MultiCell(80, 18, $sum, 1, 'C', true, 1, '520', $y, true, 0, false, true, 0, 'T', false);
unset($a);
unset($vNo);
$sum = 0;

}

解决我的问题的主要代码是

if (mysqli_multi_query($con, $query)) {
    do {
        // Store first result set
        if ($result = mysqli_store_result($con)) {
            // Fetch one and one row

            while ($row = mysqli_fetch_assoc($result)) {
                $a[] = $row;
                $vNo[] = $row['date'];

                array_multisort($a, SORT_ASC, $vNo);
            }
            // Free result set
            mysqli_free_result($result);
        }
    } while (mysqli_next_result($con));

，然后使用foreach循环从名为$ a的存储数组中获取数据

如何对多查询的结果排序？

3 个答案: