php - MYSQL/PHP 选择

Question

我有 2 个表:

• newpw_ask

  email
  code
  

• 用户

  id
  username
  password
  email
  sid
  newpw_code
  

我有这个 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';
    }
}

只执行了这个查询:

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

此外，当我输入正确的代码时，它会显示“错误代码”。

Answer 1

您需要正确选择邮箱:

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

顺便说一句，您还可以在 1 个查询中更新多个字段:

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