MYSQL/PHP选择

Question

我有2个表：

• newpw_ask

  email 
  code 
  

• users

  id 
  username 
  password 
  email 
  sid 
  newpw_code 
  

我有此PHP代码：

$code = $_POST['code2']; 
$email = mysql_query("SELECT email FROM pw_ask WHERE code='$code'"); 

if ($pass == $pass2) { 
    if ($email) { 
     $pass3 = md5($pass); 

     mysql_query("UPDATE users SET password='$pass3' WHERE email='$email'"); 
     mysql_query("UPDATE users SET newpw_code='' WHERE email='$email'"); 
     mysql_query("DELETE FROM pw_ask WHERE code='$code'"); 

     header("Location: index.php?ret=pw"); 
    } else { 
     echo 'Wrong code'; 
    } 
} 

只有这个查询得到执行：

mysql_query("DELETE FROM pw_ask WHERE code='$code'"); 

而且当我输入正确的密码，它说：“错误代码”。

Answer 1

您需要正确选择电子邮件：

$sql = mysql_query("SELECT email FROM pw_ask WHERE code='$code'"); 
$row = mysql_fetch_array($sql); 
$email = $row['email']; 

顺便说一句，你还可以在1个查询更新多个字段：

mysql_query("UPDATE users SET password='$pass3' , newpw_code='' where email='$email'");