在当前页面上更新 Mysql 到 php 中的数据

Question

嘿，我在从前端 php 更新 MYSQL 中的数据时遇到问题，当我单击一次它更新数据当我再次单击而不进行任何更改时它再次更新并带来以前的数据.我是 php 的初学者，不知道是什么问题，因为代码没有错误也没有警告请帮助和指导感谢和感谢您提前花时间

我的密码是

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Update in PHP</title>
</head>
<body>


<?php
  $servername="localhost";
  $username="root";
  $password="";
  $conn=mysql_connect($servername,$username,$password);
  
 if(!$conn ) {
       die('Could not connect: ' . mysql_error());
 }

  $sq1 = 'select * from biodata';
  mysql_select_db('firstdb');
  $display=mysql_query($sq1,$conn);

 if(!$display ) {
 
    die('Could not get data: ' . mysql_error());
    exit;
 }

 if (mysql_num_rows($display) == 0) {
    echo "No rows found, nothing to print so am exiting";
    exit;
 }
?>
 

<table border="2" style= "background-color: #84ed86; color: #761a9b; margin: 0 auto;" >
      <thead>
        <tr>
          <th>ID</th>
          <th>Fname</th>
          <th>Lname</th>
          <th>Email</th>
          <th>Phone</th>
          <th>Message</th>
    <th>Update</th>
        </tr>
      </thead>
      <tbody>
<?php
          while( $row = mysql_fetch_assoc( $display ) ){
            echo
            "<form method= 'post' />
    <tr>
       <td><input name='UID' value='{$row['ID']}' /></td>
       <td><input name='upfname' value='{$row['fname']}' /></td>
       <td><input name='uplname' value='{$row['lname']}' /></td>
       <td><input name='upemail' value='{$row['email']}' /></td>
       <td><input name='upphone' value='{$row['phone']}' /></td>
       <td><input name='upmessage' value='{$row['message']}' /></td> 
       <td><input type='Submit' name='update' value='Update' id='".$row["ID"]."' </td> 
     </tr>
    </form>";
          }
?>
      </tbody>
</table>
<?php
  if(isset($_REQUEST['update']))
  {
   
   $id   = $_REQUEST['UID'];
    $upfn = $_REQUEST['upfname'];
   $upln = $_REQUEST['uplname'];
          $upem = $_REQUEST['upemail'];
   $upph = $_REQUEST['upphone'];
   $upms = $_REQUEST['upmessage'];
   
   $up="UPDATE biodata 
   SET
   fname='$upfn',
   lname='$upln',
   email='$upem',
   phone='$upph',
   message='$upms' 
   WHERE ID = $id";
   $updbb=mysql_query($up,$conn);
   
   

   
   }
?>
   
</body>
</html>

Answer 1

重定向同一页面

header('Location: url');像 header('Location: inbox.php?u='.$log_username.'');

在当前页面上更新 Mysql 到 php 中的数据

Updating Data in Mysql through php on a current page

html

php

mysql