提交時忘記密碼導致空白頁

Question

我的忘記密碼頁面有問題。 當我輸入我的電子郵件地址並單擊提交時，我被帶到一個空白頁面並且沒有發送帶有我的密碼的電子郵件。 任何幫助表示贊賞。 謝謝！

<?php
include 'db.php';
if(isset($_POST['submit']))
{ 
    $email_address=$_POST['email_address'];
    $q=mysql_query("select * from login where email_address='".$email_address."' ") or die(mysql_error());
    $p=mysql_affected_rows();
    if($p!=0) 
    {
        $res=mysql_fetch_array($q);
        $to=$res['email_address'];
        $subject='YNAGS Password Recovery';
        $message='Your password : '.$res['password']; 
        $headers='From:password_reset@ynags.com';
        $m=mail($to,$subject,$message,$headers);
        if($m)
        {
            echo'Check your inbox in mail';
        }
        else
        {
            echo'mail is not send';
        }
    }
    else
    {
        echo'You entered mail id is not present';
    }
}
?>

我不太確定這是什么：

$q=mysql_query("select * from login where email_address='".$email_address."' ") or die(mysql_error());

主要是這個語句的登錄部分。

Answer 1

1. 我們應該知道 db.php 中的代碼（顯然沒有敏感數據）。
2. 嘗試這樣的事情：

數據庫文件

<?php
define("HOST", "your host");
define("USER", "db user name");
define("NAME", "db name");
define("PASSWORD", "password");
?>

forgot.php

<?php 
include("db.php");
if(isset($_POST['email_address'])){
    $email_address = $_POST['email_address'];
    $con = mysqli_connect(HOST, USER, PASSWORD, NAME);
    $sql = "SELECT * FROM login WHERE email_address = '".$email_address."'";
    if(mysqli_affected_rows(mysqli_query($con, $sql)) != 0){
        $res = array();
        $res = mysqli_fetch_array(mysqli_query($con, $sql));
        $to = $res['email_address'];
        // and so on ...
    }else{
        echo "Email not found";
    }
}else{
    echo "Form not submitted";
}
?>