使用php在数据库中保存会话值

Question

我有这个

session_start();
if ($_SESSION['email']&&$_SESSION['companyID'])
echo $_SESSION['email']."";
else
die("You must be logged in!");

现在我在数据库中保存了一些数据，我想通过使用包含这些但不保存companyID的createUser.php来保存companyID

$userID=0;
$userRole=$_POST ["role"];
$userEmail = $_POST["userEmail"];
$userPassword = $_POST["userPassword"];
$companyID = $_POST[$_SESSION["companyID"]];

//插入到user_details表

$sql = "INSERT INTO users (userID, email, password,companyID,roleID) VALUES 
                        ('$userID', '$userEmail', '$userPassword','$companyID','$userRole')";

Answer 1

尝试替换它：

$companyID = $_POST[$_SESSION["companyID"]];

为此：

$companyID = $_SESSION["companyID"];