Question

在尝试使用会话电子邮件成功登录并显示在页面后，我正在尝试启动会话。但是我在某个地方犯了一个错误。

这是我在登录页面上的代码

if($role == 0){



 $sql = "SELECT id FROM customers WHERE email = '$email' and password = 
 '$password'";
  $result = mysqli_query($con,$sql);
  $row = mysqli_fetch_array($result,MYSQLI_ASSOC);


  $count = mysqli_num_rows($result);

if($count == 1 ) {

      $_SESSION['Email2'] = $_POST['Email']; 

    header("Location:SystemHome.php");




  }else {

     echo " Your Login Name or Password is invalid";
  }

然后在下一页代码

<?php session_start(); ?>
<?php 
echo "Hello".$_SESSION['Email2']."";
?>

Answer 1

您应该在第一页中添加session_start：

 session_start(); // start the session

    if($role == 0){



 $sql = "SELECT id FROM customers WHERE email = '$email' and password = 
 '$password'";
  $result = mysqli_query($con,$sql);
  $row = mysqli_fetch_array($result,MYSQLI_ASSOC);


  $count = mysqli_num_rows($result);

if($count == 1 ) {

      $_SESSION['Email2'] = $_POST['Email']; 

    header("Location:SystemHome.php");




  }else {

     echo " Your Login Name or Password is invalid";
  }

php session ['Email']未显示

1 个答案: