Update

<?php

// connect to the bookdb database

$pdo = require_once 'connect.php';

$publisher = [

'publisher_id' => 1,

'name' => 'McGraw-Hill Education'

];

$sql = 'UPDATE publishers

        SET name = :name

        WHERE publisher_id = :publisher_id';

// prepare statement

$statement = $pdo->prepare($sql);

// bind params

$statement->bindParam(':publisher_id', $publisher['publisher_id'], PDO::PARAM_INT);

$statement->bindParam(':name', $publisher['name']);

// execute the UPDATE statment

if ($statement->execute()) {

echo 'The publisher has been updated successfully!';

} 

<html>

<head>

<style>

input{

        width: 40%;

        height:40px;

        border-radius:15px;

        border-color:#F00;

        font-family:"Phetsarath OT";

        font-size:18px;

        color:#00C;

        text-align:center;

        }

#button{

    width: 30%;

        height:50px;

        background-color:#009;

        border-radius:8px;

        border-bottom:5px solid #FFF;

        font-family:"Phetsarath OT";

        font-size:20px;

        color:#FF0;}}  

</style>

</head>

<body>

<?php

include('DBC.php');

$dd = $_GET['Edit'];


    $sql = "select * from login where Password = '$dd'";

    $query = mysqli_query($con, $sql);

    if($query){

        if($row=mysqli_fetch_assoc($query)){

        ?>

        <center>

        <form method="post" enctype="multipart/form-data">

    <input type="text" name="u1" value="<?php echo $row['User']; ?>" ><br><br>

    <input type="text" name="u2" value="<?php echo $row['Password']; ?>" ><br><br>

    <input type="text" name="u3" value="<?php echo $row['Status']; ?>" ><br><br>

    <input type="submit" name="update" value="ແກ້ໄຂ" id="button">

    </form></center>

    <?php  

    try{

    if(isset($_POST['update'])){

        $pp1=$_POST['u1'];

        $pp2=$_POST['u2'];

        $pp3=$_POST['u3'];


   $sq ="update login set User = '$_POST[u1]', Password = '$_POST[u2]', Status = '$_POST[u3]' where Password = '$pp2' ";

   $query = mysqli_query($con, $sq);

   if($query){

       header("refresh:0; LoginRe.php");

       }

       else{echo'Not Update';}

        }

    }

    catch(Exception $ex){}

    }   }?>

</body>

</html>