甜蜜的警報不與$ _session一起工作

Question

我想顯示一個甜蜜的警報，如果SQL是真實的，但它不工作。 這是後端部分。

<?php 
include "../../../config/config.php"; 

if (isset($_POST['submit-slider'])) 
{ 
    $title = $_POST['title-slider']; 
    $description = $_POST['description-slider']; 
    $street = $_POST['street-slider']; 
    $phone = $_POST['phone-slider']; 
    $trip = $_POST['trip-slider']; 
    $web = $_POST['web-slider']; 
    $email = $_POST['email-slider']; 

    $target_dir = "../../../img/homepage/screen_4/"; 
    $target_file2 = "" . basename($_FILES["img-slider"]["name"]); 
    $target_file = $target_dir . basename($_FILES["img-slider"]["name"]); 


    $uploadOk = 1; 

    $imageFileType = pathinfo($target_file, PATHINFO_EXTENSION); 


    // Check if $uploadOk is set to 0 by an error 
    if ($uploadOk == 0) { 
     // header("Location: /dashboard/views/slider/add_slider.php"); 
     // if everything is ok, try to upload file 
    } else { 
     if (move_uploaded_file($_FILES["img-slider"]["tmp_name"], $target_file)) { 


      //echo "The file ". basename($_FILES["img"]["name"]). " has been uploaded."; 
     } else { 
      echo "Sorry, there was an error uploading your file."; 
     } 


     $query = "INSERT INTO images(title, 
            description, 
            street_1, 
            phone, 
            url, 
            trip_link, 
            img, 
            email 
           ) 

            VALUES ('" . $title . "', '" 
       . $description . "', '" 
       . $street . "', '" 
       . $phone . "', '" 
       . $web . "', '" 
       . $trip . "', '" 
       . $target_file2 . "', '" 
       . $email . "')"; 

     $result = mysqli_query($con, $query); 

     if ($result) { 

      $_SESSION['succes_slider'] = 1; 
      header("Location: /dashboard/views/slider/add_slider.php"); 
     } else { 
//   $_SESSION['succes_slider'] = 0; 
      header("Location: /dashboard/views/slider/add_slider.php"); 
     } 
    } 
} 
?> 

這裏是我想要顯示甜蜜警報的頁面。

<?php 
session_start(); 
if (!isset($_SESSION['name'])) { 
    header("Location: /dashboard/login.php"); 
} 


//include "../config/config.php"; 
include "../../components/header.php"; 
include "../../components/menu.php"; 


if (isset($_SESSION['succes_slider']) == 1) { 
    echo" <script> 
      $(document).ready(function() { 
       swal('Succes','','succes'); 
      }); 
      </script>"; 
} 


?> 

</aside> 


<!-- Content Wrapper. Contains page content --> 
<div class="content-wrapper"> 
    <!-- Content Header (Page header) --> 
    <section class="content-header"> 
     <h1> 
      Hello 
      <small>HI</small> 
     </h1> 
    </section> 

    <!-- Main content --> 
    <section class="content"> 

我不知道爲什麼不工作，我知道..my代碼是MySQL的注入容易，但我不會在這個現在的工作。

甜警報正在我的登錄頁面上，如果能幫助別人知道爲什麼不工作的其他頁面上..

這裏是登錄的後端

if (isset($_POST['login'])) { 
    $email = mysqli_real_escape_string($con, $_POST['email']); 
    $password = mysqli_real_escape_string($con, $_POST['password']); 



    $sql = "SELECT * FROM users WHERE email='" . $email . "' AND password='" . md5($password) . "'"; 


    $result = mysqli_query($con, $sql); 


    $row_count = mysqli_num_rows($result); 


    if ($row_count != 0) { 
     $row = mysqli_fetch_assoc($result); 


     $_SESSION['email'] = $email; 
     $_SESSION['name'] = $row['name']; 




     header("Location: /dashboard/index.php"); 
    } else { 
     $_SESSION['error'] = 1; 
     header("Location: /dashboard/login.php"); 
    } 
} 

的登錄的前端與其他頁面相同，區別在於會話的名稱。

Answer 1

在使用任何$ _SESSION之前，您應該使用session_start。此外，我看到你正在使用包括，我建議你移動要求，因爲它會觸發錯誤，如果你沒有一個文件。 另一個建議是在腳本中包含/要求它們之前檢查文件是否存在。

<?php 
// include "../../../config/config.php"; 
// if a file is missing include won't trigger an error 
require "../../../config/config.php"; 

// always include session_start where you plan to use $_SESSION 
session_start(); 

if (isset($_POST['submit-slider'])) 

Answer 2

在你的第一個文件中，你也必須使用session_start()。

您正在分配$_SESSION['succes_slider'] = 1;，但此文件中沒有啓動會話。 因此，只需在第一個代碼的第一行使用session_start();即可。

Answer 3

我認爲你沒有使用的會話開始對文件代碼標籤...

添加這是你需要的只是後：

session_start();