Question

我已经制作了忘记密码脚本，用户将被重定向到另一个页面＆amp;他需要输入他的电子邮件ID。如果存在电子邮件ID，则将详细信息发送到该特定电子邮件ID。如果没有，则给出错误消息。如果电子邮件字段为空，则无法收到错误消息＆amp;按下提交

请帮助！

<?php 
$email="";
$emailErr="";
if ($_SERVER["REQUEST_METHOD"] == "POST")
    {
    if (empty($_POST["email"])) 
            {
                $emailErr = "Email is required";
            } 
    else 
            {
        $email = test_input($_POST["email"]);
                // check if e-mail address is well-formed
                if (!filter_var($email, FILTER_VALIDATE_EMAIL)) 
                    {
                        $emailErr = "Invalid email format"; 
                    }
            }
    if($_POST['submit']=='Send')
    {
            $host="localhost"; // Host name 
                        $username="root"; // Mysql username 
                    $password=""; // Mysql password 
                    $db_name="testmra"; // Database name 
                    // Connect to server and select databse.
                    $conn=mysqli_connect($host,$username,$password) or die("cannot connect"); 
                    mysqli_select_db($conn,$db_name);
                    $email = mysqli_real_escape_string($conn, $_POST['email']);             
            $query="select * from newuser where emailid='$email'";
            $result=mysqli_query($conn,$query) or die('Error: Cannot connect to db' );
            if(mysqli_num_rows($result))
            {
                $subject="Testing"; 
                $message="Hello Testing";
                mail($email, $subject, $message);

            }
            else
            {
                $emailErr = "No user exist with this email id";
            }
        }
    }
?>
<html>
<head><title>MRA</title></head>
<body>
<form method="post">
<table align="center">
<tr><td align="right">Email Id :</td><td><input type="text" name="email"  value="<?php if (isset($_POST["email"])) { echo $_POST["email"];}?>"></td><td align="left"><input type="submit" name="submit" value="Send"></td></tr>
<tr><td colspan="3" align="center"><font color="red"><?php echo $emailErr; ?></td></tr>
</table>
</form>
</body>
</html>

Answer 1

根据您提供的错误，更改此行

$query=mysqli_query($conn,"select * from newuser where emailid='$email'");

对此：

$query="select * from newuser where emailid='$email'";

我假设第31行...查询必须是字符串，而不是对象。

Answer 2

尝试使用随机令牌（例如example.com/reset_password?token=wecmwkwc321k3m1k2）向用户发送链接，将令牌暂时保存在数据库中，当用户点击链接匹配令牌并将用户发送到重置密码的页面时...

Answer 3

请更改您的连接：

$conn=mysqli_connect($host,$username,$password) or die("cannot connect"); 
mysqli_select_db($conn,$db_name);

为：

$conn = mysqli_connect($host,$username,$password,$db_name) or die("cannot connect");

比以下更改查询：

$query=mysqli_query($conn,"select * from newuser where emailid='$email'");
$result=mysqli_query($conn,$query) or die('Error: Cannot connect to db' );

到：

$query=mysqli_query("select * from newuser where emailid='$email'", $conn) or die('Error: Cannot connect to db' );

忘记密码的脚本

3 个答案: