POST空錯誤

Question

它是我的密碼更改頁面。

我試圖newpass，oldpass，newpasstwo得到和改變。但是..所有職位給空。對不起英語不好，爲什麼我不能得到這個職位？

<form action="index.php?bolum=panel&secenek=sifredegistir" autocomplete="off" method="post"> 

    <table> 
     <tr> 
     <td>Eski Şifreniz</td><td>:</td><td><input type="password" name="oldpass" id="oldpass"></td> 
     </tr> 
     <tr> 
     <td>Yeni Şifreniz</td><td>:</td><td><input type="password" name="newpass" id="newpass"></td> 
     </tr> 
     <tr> 
     <td>Yeni Şifreniz <i>(tekrar)</i></td><td>:</td><td><input type="password" id="newpasstwo" name="newpasstwo"></td> 
     </tr> 
     <tr> 
     <td></td><td></td><td><input class="px150" type="submit" value="Şifremi Değiştir"></td> 
    </table> 
    </form> 

    </div></div></div> 

<?php 

} 
elseif ($_GET['secenek'] == "sifredegistir") 
{ 
    $accname = strip_tags($_SESSION['muyuser']); 
    $oldpass = $_POST['oldpass']; 
    $newpass = $_POST['newpass']; 
    $newpasstwo = $_POST['newpasstwo']; 
    $sifre = mysql_query("SELECT * FROM users WHERE username='$accname' AND user_password='$oldpass'"); 
    $sifredogrula = mysql_num_rows($sifre); 
    if(empty($oldpass) || empty($newpasstwo) || empty($newpass)) 
    { 
     echo '<div align="center"><b>Lütfen tüm alanları doldurun!</b></div>'; 
    } 
    elseif ($sifredogrula < 1) { 
     echo $accname; 
     echo $oldpass; 
     echo newpass; 
     echo newpasstwo; 
     echo '<div align="center"><b>Bilgileriniz yanlış, lütfen dikkatli doldurun.</b></div>'; 
    } 

Answer 1

session_start（）;

某處在$ _POST ['oldpass']之前;線。

Answer 2

在用戶的SELECT *中單獨選擇用戶名就足夠了。

變化echo newpass;到echo $newpass;

變化echo newpasstwo;到echo $newpasstwo;

要改變你需要添加

mysql_query("UPDATE users SET user_password='$newpasstwo;' 
WHERE username='$accname'");