Question

问题

在我登录后，我的会话确实存在。这很好（但即使在关闭浏览器后仍保留登录页面）。但在我进入下一页后登录时，会话没有该页面存在。问题
未在表格中插入任何项目，因为第二页上不存在会话。请查看代码以便清楚理解。

这是admin_login.php

     <?php
    if(isset($_SESSION["manager"])){
    echo "hello boss,go to<a href='inventory_list.php'>inventory Page</a>";
   }
    else{


if(isset($_POST["user"]) && isset($_POST["pass"])) {
$manager=preg_replace('#[^A-Za-z0-9]#i','',$_POST["user"]);
$pass=preg_replace('#[^A-Za-z0-9]#','',$_POST["pass"]);
}
require_once "connect_to_db.php";
$sqlcommand='SELECT id FROM admin WHERE username="$manager" AND password="$pass" LIMIT 1';
$query=mysqli_query($connect_dude,$sqlcommand);
$numrow=mysqli_num_rows($query);
if($numrow==0){
header("location:admin_login.php");
}

$row=mysqli_fetch_assoc($query);
$id=$row['id'];
$manager=$row['username'];
$pass=$row['password'];

$_SESSION['manager']=$manager;
$_SESSION['password']=$pass;
$_SESSION["id"]=$id;
echo "go to <a href='inventory_list.php'>inventory page</a>";
exit();
}

session_destroy();


    ?>

 <html>
 <head>
 <title>admin login page</title>

 </head>
 <body>
 <form id="formfield" name="formfield" method="post" action="admin_login.php" >
 User Name:
 </br><input type="text" name="user" id="user" />
 </br>
 Password:
 </br>
 <input type="password" name="pass" id="pass" />
 </br>
 <input type="submit" id="subm" value="login" />
 </form>

 </body>
 </html>

这是inventory_list.php的代码

  <?php
  session_start();
  if(isset($_SESSION["manager"])){
  $id=preg_replace('#[^0-9]#i','',$_SESSION["id"]);
  $manager=preg_replace('#[^A-Za-z0-9]#i','',$_SESSION["manager"]);
  $password=preg_replace('#[^A-Za-z0-9]#i','',$_SESSION["password"]);
  include "connect_to_db.php";
  $sqlcommand="SELECT COUNT(id) FROM admin WHERE id='$id' AND username='$manager' AND password='$password' LIMIT 1";
  $counting=mysqli_query($connect_dude,$sqlcommand);
  $numrow=mysqli_num_rows($counting);
  if($numrow==0){
  echo "you better get out of here";
  exit();
  }




 if(isset($_POST["product_name"])){


    $productname=preg_replace('#[^A-Za-z]#i','',$_POST["product_name"]);
    $productprice=preg_replace('#[^0-9]#i','',$_POST["product_price"]);
    $productdetails=preg_replace('#[^A-Za-z0-9]#i','',$_POST["product_detail"]);
    $productdivision=$_POST["product_division"];
    $productsubdivision=$_POST["product_subdivision"];
    include "connect_to_db.php";
    $sql="SELECT COUNT(id) FROM products WHERE product_name='$productname' ";
    $counting=mysqli_query($connect_dude,$sql) ;
    $numrow=mysqli_num_rows($counting);
    if($numrow>0){
    echo "you have added the product before";
    print_r($numrow);

    }



    $sql="INSERT INTO products (product_name,price,details,category,subcategory,date_added) VALUES ($productname,$productprice,$productdetails,$productdivision,$productsubdivision,now())";
    mysqli_query($connect_dude,$sql) ;
    $pid=mysqli_insert_id();
    $newfile=$pid.jpg;
    move_uploaded_file($_FILES['image']['tmp_name'],"$productsubdivision/$newfile");
    header("location: inventory_list.php"); 
    exit();
       }
    }
     else{
     echo "hello Killer";
     echo "go to <a href='admin_login.php'>login page</a>";
     exit();
     }  

     session_destroy();     
     ?>
     <html>
     <head>
     </head>
     <body>

     <fieldset>
     <legend value="fucking add something">Add product,dude</legend>
     <form id="formo" action="inventory_list.php" method="post" enctype="multipart/form-data">
      Product Name:<input type="text" name="product_name" id="product_name" placeholder="Type Product Name" /></br>
      Product price:<input type="text"  name="product_price" id="product_price" placeholder="Type Product price" /></br>
      Product division:
        <select id="product_division" name="product_division">
         <option>select</option>
         <option value="food">food</option>
       <option value="apparel">apparel</option>
       <option value="beauty">beauty</option>
       <option value="toys">toys</option>
        </select>
       </br>    
      Product type:
         <select id="product_subdivision" name="product_subdivision" >
          <option value="">select</option>
            <option value="Rice">Rice</option>
          <option value="milk">milk</option>
          <option value="Meat">Meat</option>
          <option value="sweet">sweet</option>
          <option value="fruits">fruits</option>
          <option value="cap">cap</option>
          <option value="shirt">shirt</option>
          <option value="pant">pant</option>
          </select>
        </br>
     Product Detail:<textarea id="product_detail" name="product_detail" placeholder="Type Product Name" ></textarea> 
      </br>
      product Image:<input type="file" id="image" name="image" value="upload Product pic" />
     </br>
     <input type="submit" name="button" id="button" value="Add This Item Now" />

   </form>
   </fieldset>
   </body>
   </html>

感谢您的时间。

Answer 1

一种可能的解决方案一种可能的解决方案可能是启用浏览器cookie。如果cookie被禁用，则 $ _ SESSION [“manager”] 将无法在那里使用。

Answer 2

在页面顶部添加以下行：

<?php
session_start() // Add this line 
if(isset($_SESSION["manager"])){

从第1页删除session_destroy。它会奏效。凉爽...

Answer 3

请在管理页面

下面的行下面添加开始会话

<?php
 session_start() // Add this line in your code. it will work fine. 
if(isset($_SESSION["manager"])){
echo "hello boss,go to<a href='inventory_list.php'>inventory Page</a>";

如果此答案解决了您的问题，请将其标记为答案，以便其他人可以在将来使用

显示我在网页上提供的PHP会话，即使在没有可用之后

3 个答案: