php - 相同的形式但有输入做其他事情

Question

刚刚创建了一个“changedetails.php”页面，用户可以在其中更改其详细信息，例如“密码”和“电子邮件”。它们都工作成功，但我试图允许用户更改他们的电子邮件而不必更改他们的密码。

基本上，如果用户只想更改电子邮件，它将在数据库中更新，而无需更改密码。

代码:

<title>Honda |</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<link href='http://fonts.googleapis.com/css?family=Julius+Sans+One' rel='stylesheet' type='text/css'>
<link href="../css/style.css" rel="stylesheet" type="text/css" media="all" />

<?php
session_start();

$username = $_SESSION['sess_user'];

echo '<div class="search1"><h2>'.$username.'</h2></div>';

if (isset($_SESSION['sess_user'])) {
    //user is logged in
    if (isset($_POST['submit'])) {
        //start changing password
        //check fields

        $oldpassword = md5($_POST['oldpassword']);
        $newpassword = md5($_POST['newpassword']);
        $email = $_POST['email'];

        $repeatnewpassword = md5($_POST['repeatnewpassword']);


        //check password against db
        include('../includes/config.php');

        $queryget = mysql_query("SELECT password 
                                 FROM login 
                                 WHERE username='$username'") 
                    or die ("change password failed");
        $row = mysql_fetch_assoc($queryget);
        $oldpassworddb = $row['password'];

        //check passwords
        if ($oldpassword==$oldpassworddb) {
            //check two new passwords
            if ($newpassword==$repeatnewpassword) {
                //successs
                //change password in db

                $querychange = mysql_query("UPDATE login 
                                            SET password='$newpassword' 
                                            WHERE username='$username'");
                $querychange = mysql_query("UPDATE login 
                                            SET email='$email' 
                                            WHERE username='$username'");
                die("<div class='successmate'>
                     Your password has been changed. <a href='index2.php'>
                     <br><br> Return</a></div>");
            } else {
                die("<div class='results'>New password doesn't match!</div>");
            }
        } else {
            die("<div class='results'>Old password doesn't match!</div>");
        }
    } else {
        echo "<form class='search1' action='changepassword.php' method='POST'>";
        echo "<label>Old Password:</label> <input type='password' id='password' name='oldpassword'>";
        echo "<p><label>New Password:</label> ";
        echo "<input type='password' id='password' name='newpassword'>";
        echo "<p><label>Repeat New Password:</label> ";
        echo "<input type='password'  name='repeatnewpassword'><p>";
        echo "<label>Email:</label> <input type='email'  name='email'>";
        echo "<p><input type='submit' name='submit' class='submit' value='submit'>";
        echo "<br><br><br><h2><p><a href='index2.php'>Back</a></p></h2></form>";
     }
 } else { 
     die ("You must be logged in to change your password");
 }

 ?>

<img src="../images/main.jpg">

谢谢!

更新2:

if ($newpassword != "")  {
  //check passwords
  if ($oldpassword==$oldpassworddb)
  {
  //check two new passwords
  if ($newpassword==$repeatnewpassword)
  {
  //successs
  //change password in db

  $querychange = mysql_query("UPDATE login SET password='$newpassword' WHERE username='$username'");
  }
  else 
die("<div class='results'>New password doesn't match!</div>");


}else 
die("<div class='results'>Old password doesn't match!</div>");

}

}


if ($email != "")  {
$querychange = mysql_query("UPDATE login SET email='$email' WHERE   username='$username'");
die("<div class='successmate'>Your password has been changed. <a href='index2.php'><br><br> Return</a></div>");
}

}
else
{

echo"
<form class='search1' action='changepassword.php' method='POST'>
<label>Current Password:</label> <input type='password' id='password' name='oldpassword'><p>
<label>New Password:</label> <input type='password' id='password' name='newpassword'><p>
<label>Repeat New Password:</label> <input type='password'  name='repeatnewpassword'><p>
<label>Email:</label> <input type='email'  name='email'><p>
<input type='submit' name='submit' class='submit' value='submit'><br><br><br>
<h2><p><a href='index2.php'>Back</a></p></h2>
</form>
";
 }

 {else 
die ("You must be logged in to change your password");


?>

Answer 1

问题是您正在运行两个查询，您需要添加一个检查以查看密码是否为空，然后跳过密码查询，如果电子邮件为空则跳过电子邮件查询

编辑:

if ($newpassword != "")  {
  //check passwords
  if ($oldpassword==$oldpassworddb)
  {
  //check two new passwords
  if ($newpassword==$repeatnewpassword)
  {
  //successs
  //change password in db

  $querychange = mysql_query("UPDATE login SET password='$newpassword' WHERE username='$username'");
  else 
die("<div class='results'>New password doesn't match!</div>");

}else 
die("<div class='results'>Old password doesn't match!</div>");

}

}


if ($email != "")  {
$querychange = mysql_query("UPDATE login SET email='$email' WHERE   username='$username'");
die("<div class='successmate'>Your password has been changed. <a href='index2.php'><br><br> Return</a></div>");
}

完整代码集(OP请求)

<title>Honda |</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<link href='http://fonts.googleapis.com/css?family=Julius+Sans+One' rel='stylesheet' type='text/css'>
<link href="../css/style.css" rel="stylesheet" type="text/css" media="all" />

<?php
session_start();

$username = $_SESSION['sess_user'];

echo '<div class="search1"><h2>'.$username.'</h2></div>';

if (isset($_SESSION['sess_user'])) {
    //user is logged in
    if (isset($_POST['submit'])) {
        //start changing password
        //check fields

        $oldpassword = md5($_POST['oldpassword']);
        $newpassword = md5($_POST['newpassword']);
        $email = $_POST['email'];

        $repeatnewpassword = md5($_POST['repeatnewpassword']);


        //check password against db
        include('../includes/config.php');

        $queryget = mysql_query("SELECT password FROM login WHERE username='$username'") 
                or die ("change password failed");
    $row = mysql_fetch_assoc($queryget);
    $oldpassworddb = $row['password'];

    if ($newpassword != "")   {
        //check passwords
        if ($oldpassword==$oldpassworddb) {
            //check two new passwords
            if ($newpassword==$repeatnewpassword) {
               //successs
               //change password in db

               $querychange = mysql_query("UPDATE login SET password='$newpassword' WHERE username='$username'");


     die("<div class='successmate'>
                 Your password has been changed. <a href='index2.php'>
                 <br><br> Return</a></div>");
        } else {
            die("<div class='results'>New password doesn't match!</div>");
        }
    } else {
        die("<div class='results'>Old password doesn't match!</div>");
    }

    }

            if ($email != "")    {
                $querychange = mysql_query("UPDATE login SET email='$email' WHERE username='$username'");

die("<div class='successmate'>
                 Your email been changed. <a href='index2.php'>
                 <br><br> Return</a></div>");

            }
                } else {
    echo "<form class='search1' action='changepassword.php' method='POST'>";
    echo "<label>Old Password:</label> <input type='password' id='password' name='oldpassword'>";
    echo "<p><label>New Password:</label> ";
    echo "<input type='password' id='password' name='newpassword'>";
    echo "<p><label>Repeat New Password:</label> ";
    echo "<input type='password'  name='repeatnewpassword'><p>";
    echo "<label>Email:</label> <input type='email'  name='email'>";
    echo "<p><input type='submit' name='submit' class='submit' value='submit'>";
    echo "<br><br><br><h2><p><a href='index2.php'>Back</a></p></h2></form>";
 }
 } else { 
     die ("You must be logged in to change your password");
 }

 ?>

<img src="../images/main.jpg">