MySQLi准备好的语句&foreach 循环

问题描述

我正在努力修改以下(有效)以使用准备好的语句:

echo "
<h4>值$_POSTed from *LINE-ITEMS TABLE* in input.php:</h4><表格>";foreach ($_POST['date'] as $i => $value) {$invNum = $_POST['invNum'];$date = $_POST['date'][$i];$hours = $_POST['hours'][$i];$rate = $_POST['rate'][$i];$dateTotal = $_POST['dateTotal'][$i];回声<tr><td>".$i."</td><td>".$date."</td><td>".$hours."</td><td>".$rate."</td><td>".$dateTotal."</td></tr>";$query = "INSERT INTO Invoice_Line_Items SETINVOICE_NUMBER = '$invNum',日期 = '$日期',小时 = '$小时',RATE = '$rate',DATE_TOTAL = '$dateTotal'关于重复密钥更新INVOICE_NUMBER = VALUES(INVOICE_NUMBER),日期 = 值(日期)，小时 = 值(小时)，费率 = 值(费率)，DATE_TOTAL = VALUES(DATE_TOTAL)"；}//结束 foreachecho "</table></div>";

我一直在尝试调整在同一页面中运行在此之上的(工作)准备好的语句/查询，它将单行插入到不同的表中.但是这个第二个查询(到不同的数据库表中)从源表单中的行项目表的多个(动态#)行插入数据.

我已经研究了几个小时，但我无法完全弄清楚如何使用行项目循环实现准备好的语句.我以为会是这样，但这不是插入.

echo "
<h4>值$_POSTed from *LINE-ITEMS TABLE* in input.php:</h4><表格>";//这是表单中的行项目表；我不必在查询之前获取这些值吗?foreach ($_POST['date'] as $i => $value) {$invNum = $_POST['invNum'];$date = $_POST['date'][$i];$hours = $_POST['hours'][$i];$rate = $_POST['rate'][$i];$dateTotal = $_POST['dateTotal'][$i];//确认变量/值echo "<tr><td>".$i."</td><td>".$date."</td><td>".$hours."</td><td>".$rate."</td><td>".$dateTotal."</td></tr>";$stmt = $mysqli->stmt_init();$query = "INSERT INTO Invoice_Line_ItemsINVOICE_NUMBER = '$invNum',日期 = '$日期',小时 = '$小时',RATE = '$rate',DATE_TOTAL = '$dateTotal'关于重复密钥更新INVOICE_NUMBER = VALUES(INVOICE_NUMBER),日期 = 值(日期)，小时 = 值(小时)，费率 = 值(费率)，DATE_TOTAL = VALUES(DATE_TOTAL)"；如果 ($stmt->prepare($query)) {$stmt ->bind_param("ssddd", $invNum, $date, $hours, $rate, $dateTotal);$stmt ->执行();$stmt->close();}//如果 $stmt}//结束 foreachecho "</table></div>";

有人可以透露一些信息吗?非常感谢.

svs

你不需要

$stmt = $mysqli->stmt_init();

你应该可以打电话

$stmt = $mysqli->prepare($query);

另一个问题是您在循环中内部设置查询.你不应该那样做.将 $stmt 移到循环外，并在设置变量后仅在其中运行 execute.最后需要加上?，让MySQL知道参数

$query = "INSERT INTO Invoice_Line_ItemsINVOICE_NUMBER = ?,日期 = ?,小时 = ?,率 = ?,DATE_TOTAL = ?关于重复密钥更新INVOICE_NUMBER = VALUES(INVOICE_NUMBER),日期 = 值(日期)，小时 = 值(小时)，费率 = 值(费率)，DATE_TOTAL = VALUES(DATE_TOTAL)"；$invNum = $date = $hours = $rate = $dateTotal = '';$stmt = $mysqli->prepare($query);$stmt->bind_param("ssddd", $invNum, $date, $hours, $rate, $dateTotal);foreach ($_POST['date'] as $i => $value) {$invNum = $_POST['invNum'];$date = $_POST['date'][$i];$hours = $_POST['hours'][$i];$rate = $_POST['rate'][$i];$dateTotal = $_POST['dateTotal'][$i];$stmt->execute();}

I'm struggling to revise the following (which works) to use a prepared statement:

echo "<div class="debug">
            <h4>values $_POSTed from *LINE-ITEMS TABLE* in input.php:</h4>
            <table>";

    foreach ($_POST['date'] as $i => $value) {
        $invNum     = $_POST['invNum'];
        $date           = $_POST['date'][$i];
        $hours      = $_POST['hours'][$i];
        $rate           = $_POST['rate'][$i];
        $dateTotal  = $_POST['dateTotal'][$i];

        echo "<tr>
                    <td>".$i."</td>
                    <td>".$date."</td>
                    <td>".$hours."</td>
                    <td>".$rate."</td>
                    <td>".$dateTotal."</td>
                </tr>";

            $query = "INSERT INTO Invoice_Line_Items SET
                INVOICE_NUMBER  = '$invNum',
                DATE                = '$date',
                HOURS               = '$hours',
                RATE                = '$rate',
                DATE_TOTAL      = '$dateTotal'

                ON DUPLICATE KEY UPDATE
                INVOICE_NUMBER  = VALUES(INVOICE_NUMBER),
                DATE                = VALUES(DATE),
                HOURS               = VALUES(HOURS),
                RATE                = VALUES(RATE),
                DATE_TOTAL      = VALUES(DATE_TOTAL)
                ";

        } // END foreach
echo "</table></div>";

I've been trying to adapt the (working) prepared statement/query running above this in the same page, which inserts a single row into a different table. But this 2nd query (into a different db table) inserts data from multiple (dynamic # of) rows from a line-items table within the source form.

I've been hacking at it for hours but I can't quite sort out how to implement a prepared statement with the line-items loop. I thought it would be along these lines, but this is not inserting.

echo "<div class="debug">
            <h4>values $_POSTed from *LINE-ITEMS TABLE* in input.php:</h4>
            <table>";

// this is the line-items table in the form; don't I have to get these values before the query?
foreach ($_POST['date'] as $i => $value) {
    $invNum     = $_POST['invNum'];
    $date           = $_POST['date'][$i];
    $hours      = $_POST['hours'][$i];
    $rate           = $_POST['rate'][$i];
    $dateTotal  = $_POST['dateTotal'][$i];
    // confirm vars/values
    echo "<tr><td>".$i."</td><td>".$date."</td><td>".$hours."</td><td>".$rate."</td><td>".$dateTotal."</td></tr>";

    $stmt = $mysqli->stmt_init();
    $query = "INSERT INTO Invoice_Line_Items
        INVOICE_NUMBER  = '$invNum',
        DATE                = '$date',
        HOURS               = '$hours',
        RATE                = '$rate',
        DATE_TOTAL      = '$dateTotal'

        ON DUPLICATE KEY UPDATE
        INVOICE_NUMBER  = VALUES(INVOICE_NUMBER),
        DATE                = VALUES(DATE),
        HOURS               = VALUES(HOURS),
        RATE                = VALUES(RATE),
        DATE_TOTAL      = VALUES(DATE_TOTAL)
        ";

        if ($stmt->prepare($query)) {
            $stmt -> bind_param("ssddd", $invNum, $date, $hours, $rate, $dateTotal);
            $stmt -> execute();
            $stmt->close();
        } // if $stmt
} // END foreach

echo "</table></div>";

Can someone please shed some light? Much appreciated.

svs

You don't need

$stmt = $mysqli->stmt_init();

You should be able to just call

$stmt = $mysqli->prepare($query);

Another problem is you're setting the query up inside your loop. You shouldn't do that. Move $stmt outside the loop and only run execute inside once you've set your variables up. Finally, you need to add ? so MySQL knows the parameters

$query = "INSERT INTO Invoice_Line_Items
    INVOICE_NUMBER  = ?,
    DATE = ?,
    HOURS = ?,
    RATE  = ?,
    DATE_TOTAL = ?

    ON DUPLICATE KEY UPDATE
    INVOICE_NUMBER  = VALUES(INVOICE_NUMBER),
    DATE                = VALUES(DATE),
    HOURS               = VALUES(HOURS),
    RATE                = VALUES(RATE),
    DATE_TOTAL      = VALUES(DATE_TOTAL)
    ";
 $invNum = $date = $hours = $rate = $dateTotal = '';
 $stmt = $mysqli->prepare($query);
 $stmt->bind_param("ssddd", $invNum, $date, $hours, $rate, $dateTotal);

foreach ($_POST['date'] as $i => $value) {
    $invNum     = $_POST['invNum'];
    $date           = $_POST['date'][$i];
    $hours      = $_POST['hours'][$i];
    $rate           = $_POST['rate'][$i];
    $dateTotal  = $_POST['dateTotal'][$i];
    $stmt->execute();
}

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