Question

再次编辑这个问题。

这是我现在的进展，我将代码转移到另一张表并使其更清晰，没有错误，但仍然没有更新我的表。对于那些在我之前的问题上回答的人，谢谢你的善意。

编辑代码。

"<a href=\"edit.php?id=". $row['ID'] ."\">Edit</a>". "</td>";

这是我的新编辑.php

<!DOCTYPE html>
<body>

    <form method="post" action="edit1.php">
    Components: <input type="text" name="Components"> <br /><br />
    Manufacturer: <input type="text" name="Manufacturer"> <br /><br />
    ManufacturerPN: <input type="text" name="ManufacturerPN"> <br /><br />
    Description: <input type="text" name="Description"> <br /><br />
    Quantity: <input type="number" name="Quantity"> <br /><br />
    <br />
    <input type="submit" name="submit"> <br /><br />
</form>

</body>
</html>

这是edit1.php

<?php 
        $dbhost = "localhost";
        $dbuser = "root";
        $dbpass = "";
        $link = mysql_connect($dbhost, $dbuser, $dbpass);

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

    $Components = $_POST['Components'];
    $Manufacturer = $_POST['Manufacturer'];
    $ManufacturerPN = $_POST['ManufacturerPN'];
    $Description = $_POST['Description'] ;
    $Quantity = $_POST['Quantity'];
    $id = $_GET['ID'];

    $sql= "UPDATE form SET Components='$Components' , Manufacturer='$Manufacturer' , ManufacturerPN='ManufacturerPN' , Description='$Description' , Quantity='Quantity' WHERE ID = '$id'";

    mysql_select_db('practice1');

    $result = mysql_query($sql, $link);
    if(!$result){
       die ('Could not enter data:' . mysql_error());
    }else if ($result){
        header("location:Inventory.php");
    }

}
?>

我是否在正确的道路上？

Answer 1

请试试这个。括号似乎存在问题。

<!DOCTYPE html>
<body>

<?PHP

    $link = mysql_connect("localhost","root","");
    mysql_select_db("practice1", $link);

    if(isset($_GET['ID']))
    {
        $id = $_GET['ID'];
        if(isset($_POST['submit'])) {

            $Components = $_POST['Components'];
            $Manufacturer = $_POST['Manufacturer'];
            $ManufacturerPN = $_POST['ManufacturerPN'];
            $Description = $_POST['Description'];
            $Quantity = $_POST['Quantity'];

            $query3 = mysql_query("UPDATE form set Components='$Components', Manufacturer='$Manufacturer' , ManufacturerPN='$ManufacturerPN' , Description='$Description' , Quantity='$Quantity' where ID=$id");
        if($query3){

            header("location:Inventory.php");

        }
        }


    }

    $query=mysql_query("SELECT * FROM form where ID='$id'");
    $row=mysql_fetch_array($query);

    ?>

        <form method="post" action="">

    Components: <input type="text" name="Components" value="<?php echo $row["Components"]?>"> <br /><br />
    Manufacturer: <input type="text" name="Components" value="<?php echo $row["Manufacturer"]?>"> <br /><br />
    ManufacturerPN: <input type="text" name="Components" value="<?php echo $row["manufacturerPN"]?>"> <br /><br />
    Description: <input type="text" name="Components" value="<?php echo $row["Description"]?>"> <br /><br />
    Quantity: <input type="number" name="Components" value="<?php echo $row["Quantity"]?>"> <br /><br />
    <br />
    <input type="submit" name="submit"> <br /><br />

    </form>


</body>
</html>

Answer 2

试试这个：

$link = mysql_connect("localhost","root","", "dbName");
$result=mysqli_query($link,$sql); // $sql = YOUR QUERY
// Numeric array
$row=mysqli_fetch_array($result,MYSQLI_NUM);

Answer 3

<强> 1）每个<input>具有相同的名称。所以，

更改

<form method="post" action="<?php $_PHP_SELF ?>">
    Components: <input type="text" name="Components"> <br /><br />
    Manufacturer: <input type="text" name="Components"> <br /><br />
    ManufacturerPN: <input type="text" name="Components"> <br /><br />
    Description: <input type="text" name="Components"> <br /><br />
    Quantity: <input type="number" name="Components"> <br /><br />
    <br />
    <input type="submit" name="submit"> <br /><br />
</form>

要

<form method="post" action="<?php $_PHP_SELF ?>">
    Components: <input type="text" name="Components"> <br /><br />
    Manufacturer: <input type="text" name="Manufacturer"> <br /><br />
    ManufacturerPN: <input type="text" name="ManufacturerPN"> <br /><br />
    Description: <input type="text" name="Description"> <br /><br />
    Quantity: <input type="number" name="Quantity"> <br /><br />
    <br />
    <input type="submit" name="submit"> <br /><br />
</form>

2）更改

$sql = "UPDATE form SET Components=$Components, Manufacturer=$Manufacturer , ManufacturerPN=$ManufacturerPN , Description=$Description , Quantity=$Quantity where ID=$id";

要

$sql = "UPDATE form SET Components='$Components', Manufacturer='$Manufacturer' , ManufacturerPN='$ManufacturerPN' , Description='$Description' , Quantity='$Quantity' WHERE ID=$id";

3）将mysql_select_db('practice1');更改为mysql_select_db('practice1', $link);

4）更改

$Components = isset($_POST['Components']);
$Manufacturer = isset($_POST['Manufacturer']);
$ManufacturerPN = isset($_POST['ManufacturerPN']);
$Description = isset($_POST['Description']);
$Quantity = isset($_POST['Quantity']);
$id = isset($_GET['ID']);

要

$Components = $_POST['Components'];
$Manufacturer = $_POST['Manufacturer'];
$ManufacturerPN = $_POST['ManufacturerPN'];
$Description = $_POST['Description'];
$Quantity = $_POST['Quantity'];
$id = $_GET['ID'];

更新代码：

<?php
if(isset($_POST['submit'])) {
  $dbhost = "localhost";
  $dbuser = "root";
  $dbpass = "";
  $link = mysql_connect($dbhost, $dbuser, $dbpass);
    $db = mysql_select_db('practice1', $link);

  if (!$link){
      die('Could not connect: ' . mysql_error());
  }
  $Components = $_POST['Components'];
  $Manufacturer = $_POST['Manufacturer'];
  $ManufacturerPN = $_POST['ManufacturerPN'];
  $Description = $_POST['Description'];
  $Quantity = $_POST['Quantity'];
  $id = $_GET['ID'];

   $sql = "UPDATE form SET Components='$Components', Manufacturer='$Manufacturer' , ManufacturerPN='$ManufacturerPN' , Description='$Description' , Quantity='$Quantity' WHERE ID=$id";

  $retval = mysql_query($sql, $link);

  if(!$retval){
      die ('Could not enter data:' . mysql_error());
  }
  header("location:Inventory.php");


  mysql_close($link);
} else {?>

    <form method="post" action="<?php $_PHP_SELF ?>">
    Components: <input type="text" name="Components"> <br /><br />
    Manufacturer: <input type="text" name="Manufacturer"> <br /><br />
    ManufacturerPN: <input type="text" name="ManufacturerPN"> <br /><br />
    Description: <input type="text" name="Description"> <br /><br />
    Quantity: <input type="number" name="Quantity"> <br /><br />
    <br />
    <input type="submit" name="submit"> <br /><br />
    </form>

<?PHP }?>
</body>
</html>

使用php编辑特定的mysql行[重新编辑]

3 个答案: