[英]Why are my PHP session variables not working?
突然,我的PHP會話變量停止存儲了。 以前,它可以正常工作,但沒有任何明顯的變化,變量不再存儲。
我嘗試在adminlogin.php上使用代碼來顯示所有現有的會話變量,實際上,使用登錄表單時並未存儲它們。 重新加載頁面后,將不再存儲它們。
我還創建了一個新文件random.php,其中將一個隨機數存儲到$ _SESSION ['Number']。 完成之后,我回到adminlogin.php,填寫該頁面上的表單,然后重新加載該頁面。 再次,該表單應該存儲的會話變量不在會話數組中,但是顯示了隨機數$ _SESSION ['Number']。
connect.php(標題)
<?php
session_start();
$user = 'root';
$password = 'root';
$db = 'sharkcard';
$host = 'localhost';
$port = 3306;
$link = mysqli_init();
$connection = new mysqli(
$host,
$user,
$password,
$db
);
if(!(empty($_SESSION['LoggedIn'])) && !empty($_SESSION['StudentID']))
{
$loggedin = 1;
}
else{
$loggedin = 0;
}
?>
adminlogin.php
<?php include 'connect.php';
if($_SESSION['LoggedIn'] == 1)
{
echo "Welcome back! You are: " . $_SESSION['StudentID'] . " " . $_SESSION['Row']['FirstName'] . " " . $_SESSION['Row']['LastName'] . "<br>";
}
else{
if(!($_SERVER["REQUEST_METHOD"] == "POST")){
?>
<form action="adminlogin.php" method="POST">
Password: <input type="password" name="password" autofocus="autofocus"><br>
sharkcard ID: <input type="text" name="id"><br>
<input type="submit">
</form>
<?php
}
else if(empty($_POST['id']) || empty($_POST['password'])){
echo "You left something blank! Reload the page and try again.";
}
else {
$id = ($_POST['id']);
$password = md5($_POST['password']);
$checklogin = $connection->query("SELECT * FROM students WHERE StudentID = '".$id."' AND AdminPassword = '".$password."' AND AdminPrivileges = 1");
$num = mysqli_num_rows($checklogin);
if(mysqli_num_rows($checklogin) == 1)
{
$row = mysqli_fetch_array($checklogin);
$_SESSION['StudentID'] = $id;
$_SESSION['Row'] = $row; // added
$_SESSION['LoggedIn'] = 1;
echo "<h1><font color=\"green\">Success</font></h1>";
echo "<b>Account Information</b><br>" . $_SESSION['StudentID'] . " " . $_SESSION['Row']['FirstName'] . " ". $_SESSION['Row']['LastName'];
}
else
{
echo "<h1><font color=\"red\">Failure</font></h1>";
echo "<p>Sorry, your account could not be found. Please reload and try again.</a>.</p>";
}
}
}
?>
我相信問題是adminlogin.php的第2行if($_SESSION['LoggedIn'] == 1)
應該是if($loggedin)
$_SESSION['LoggedIn']
和$_SESSION['StudentID']
也不是數組,因此您應該在第19行的connect.php中使用isset()
而不是empty()
。
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