php, sql, html 用相应的按钮更新唯一记录

Question

我是 PHP 和 SQL 的新手，正在尝试弄清楚如何让 HTML 批准（提交）按钮专门与其对应的记录进行交互。当前，当单击“批准”按钮时，每个字段都会更新，但可用的最前面（第一条）记录始终是更新的。我希望用户能够跳过第一条记录并更新不同的记录。非常感谢所有 suggestions/help。

$conn = new mysqli(DB_SERVER, DB_USER, DB_PASSWORD, DB_NAME) or die('there was a problem connecting to the database' . mysql_error());

$sql = "SELECT Part, Lot, Qty, AnodTemp, Amp, SealTemp, PerformedBy, DateTimePerformed, FinalAnodThickness, QtyPass, FinalSealCheck, CheckedBy, DateTimeChecked, id  FROM logs";

$result = $conn->query($sql);




if ($result->num_rows > 0)
{
    while($row = $result->fetch_assoc())
{
    $unapproved = $row['CheckedBy'];
    if($unapproved == null)
    {

        echo "<br><br><br> Part: " . $row['Part']. " / Lot: " . $row['Lot']. " / Qty: " . $row['Qty']. " / AnodTemp: " . $row['AnodTemp']. " / Amp: " . $row['Amp']. " / SealTemp: " . $row['SealTemp']. " / PerformedBy: " . $row['PerformedBy']. " / ID: " . $row['id']; ?>

        <form action="adminapproval.php" method="post">
        Final Anod Thickness:<br>
        <input type="text" name="FinalAnodThickness">
        <br><br>
        Qty Pass:<br>
        <input type="text" name="QtyPass">
        <br><br>
        Final Seal Check:<br>
        <input type="text" name="FinalSealCheck">
        <br><br>


        <input type="submit" id="submit" value="Approve" name="submit">
        <br><br>
        </form> 
        _____________________________________________________________________<br>
        <?php

        if (isset($_POST['submit']))
        {

            $FinalAnodThickness= $_POST['FinalAnodThickness'];
            $QtyPass= $_POST['QtyPass'];
            $FinalSealCheck= $_POST['FinalSealCheck'];
            $CheckedBy= $_SESSION['CheckedBy'];
            $id = $row['id'];





            $sql = "UPDATE logs SET FinalAnodThickness = '$FinalAnodThickness', QtyPass = '$QtyPass', FinalSealCheck = '$FinalSealCheck', CheckedBy = '$CheckedBy', DateTimeChecked = now() WHERE id = $id ";
            $conn->query($sql);
            break;
            $conn->close();
            echo "Record Updated.";
            header("Location: adminapproval.php");
         }

       }
   }
}



echo "<br><br> No further items need to be approved at this time.";


?>

Answer 1

<?php
$server = "localhost";
$username = "username";
$password = "password";
$dbname = "db";

$con = mysqli_connect($server, $username, $password, $dbname);
if (!$con) {
    die("Faild: " . mysqli_connect_error());
}

$sql = "UPDATE xxx SET lastname='Jan' WHERE id=2"; // This is importat

if (mysqli_query($con, $sql)) {
    echo "Record updated successfully";
} else {
    echo "Error updating record: " . mysqli_error($con);
}

mysqli_close($con);
?>

Answer 2

        $CheckedBy= $_SESSION['CheckedBy'];
        $id = $row['id'];

行 ID 是否也应该从会话中出来？如果不是，那么它将始终指向行中的第一项。

Answer 3

两个文件

adminapproval.php

<?php
session_start();
$conn = new mysqli(DB_SERVER, DB_USER, DB_PASSWORD, DB_NAME) or die('there was a problem connecting to the database' . mysql_error());
$sql = "SELECT Part, Lot, Qty, AnodTemp, Amp, SealTemp, PerformedBy, DateTimePerformed, FinalAnodThickness, QtyPass, FinalSealCheck, CheckedBy, DateTimeChecked, id  FROM logs";
$result = $conn->query($sql);

if ($result->num_rows > 0){
while($row = $result->fetch_assoc()){
  $unapproved = $row['CheckedBy'];
        if($unapproved == null){
            echo "<br><br><br> Part: " . $row['Part']. " / Lot: " . $row['Lot']. " / Qty: " . $row['Qty']. " / AnodTemp: " . $row['AnodTemp']. " / Amp: " . $row['Amp']. " / SealTemp: " . $row['SealTemp']. " / PerformedBy: " . $row['PerformedBy']. " / ID: " . $row['id']; ?>

            <form action="adminapproval-exec.php?id=<?php echo $row['id']; ?>" method="post">
                <input type="hidden" name="id" value="<?php echo $row['id']; ?>" />
                <input type="hidden" name="checkedby" value="<?php echo $SESSION['CheckedBy']; ?>" />
                Final Anod Thickness:<br>
                <input type="text" name="FinalAnodThickness">
                <br><br>
                Qty Pass:<br>
                <input type="text" name="QtyPass">
                <br><br>
                Final Seal Check:<br>
                <input type="text" name="FinalSealCheck">
                <br><br>
                <input type="submit" id="submit" value="Approve" name="submit">
                <br><br>
            </form>
            <?php
        }
    }
} else {
    echo "<br><br> No further items need to be approved at this time.";
}
?>

adminapproval-exec.php

<?php
session_start();
if (isset($_POST['submit'])){
    $FinalAnodThickness= $_POST['FinalAnodThickness'];
    $QtyPass= $_POST['QtyPass'];
    $FinalSealCheck= $_POST['FinalSealCheck'];
    $CheckedBy= $_POST['CheckedBy'];
    $id = $_GET['id'];
    // OR
    // $id = $_POST['id'];

    $sql = "UPDATE logs SET FinalAnodThickness = '$FinalAnodThickness', QtyPass = '$QtyPass', FinalSealCheck = '$FinalSealCheck', CheckedBy = '$CheckedBy', DateTimeChecked = now() WHERE id = $id ";
    $conn->query($sql);
    $conn->close();
    // echo "Record Updated.";
    header("Location: adminapproval.php");
}
?>

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