它不是将用户导航到他们应该在的页面 - it is not navigating user to page they should be on

下面我有一个应该发生的场景:

User在create_session.php页面上，因此数组中的其他页面为锁定
如果用户试图访问另一个页面，则显示div
如果用户选择继续链接，那么它应该将用户导航到他们应该在create.php页

问题是，如果用户访问另一个页面并出现div框，如果用户单击Continue链接，它不会导航回create_session.php页面，或者换句话说，用户最后访问的页面。

点击Continue链接后，url似乎没有改变

为什么在点击Continue后，它没有导航到用户应该在的页面?

这个脚本试图控制哪些页面被锁定，并保持用户所在的页面不被锁定，在这个脚本steps.php中，如下所示:

<?php
function allowed_in(){
$steps = array('create_session.php', 'QandATable.php', 'individualmarks.php', 'penalty.php', 'penaltymarks', 'complete.php');
// Track $latestStep in either a session variable
// $currentStep will be dependent upon the page you're on
if(isset($_SESSION['latestStep'])){
   $latestStep = $_SESSION['latestStep'];
}
else{
   $latestStep = "";
}
$currentStep = basename(__FILE__); 
$currentIdx = array_search($currentStep, $steps);
$latestIdx = array_search($latestStep, $steps);
if ($currentIdx - $latestIdx > 1 ) {
   return true;
} else {
    return false;
}
}
?>

现在存储在数组中的每个脚本都包含代码include('steps.php')，并包含以下代码:

        <?php
if (allowed_in()){
//create_session.php code
}else{
?>
<div class="boxed">
<a href="<?php echo $steps[$latestIdx + 1] ?>">Continue</a>
</div>
<?php   
}
?>

更新:

当我点击Continue链接时，在url中显示了以下两个错误:

注意:未定义变量:latestIdx in…第1636行

注意:未定义变量:steps in…第1636行

下面这行显示注意事项:

<a href="<?php echo $steps[$latestIdx + 1] ?>">Continue</a>

更新2:

当我导航到一个被锁定的页面时(换句话说，当你必须使用Continue的框出现时，我得到未定义的$_SESSION变量，我也得到这个错误:Undefined variable: steps in steps.php on line 57

对于$_SESSION未定义的错误，是因为我把$_SESSION变量放在错误的地方吗?如何停止steps。php中未定义的变量?

下面是QandATable.php顺序代码的示例:

    <?php
    ini_set('session.gc_maxlifetime',12*60*60);
    ini_set('session.gc_divisor', '1');
    ini_set('session.gc_probability', '1');
    ini_set('session.cookie_lifetime', '0');
    require_once 'init.php'; 
    //12 hours sessions
    session_start();
    include('steps.php'); //exteranlised steps.php
    <head>
    if (isset($_POST['id'])) {
    $_SESSION['id'] = $_POST['id'];
    }

    if(isset($_POST['sessionNum'])){
                //Declare my counter for the first time
                $_SESSION['initial_count'] = $_POST['sessionNum'];
                $_SESSION['sessionNum'] = intval($_POST['sessionNum']);
                $_SESSION['sessionCount'] = 1;
        }
    elseif (isset($_POST['submitDetails']) && $_SESSION['sessionCount'] < $_SESSION['sessionNum']) {
        $_SESSION['sessionCount']++;
    }
    </head>
    <body>
    <?php 
//once session is expired, it should log the user out, but at mo this isn't happening
    if ((isset($username)) && (isset($userid))){ //checks if user is logged in
        if (allowed_in()=== "Allowed"){
    //QandATable.php code:
    }else{
    $page = allowed_in()+1;

    ?>
    <div class="boxed">
      <a href="<?php echo $steps[$page] ?>">Continue with Current Assessment</a>
    <?php   
    }
    }else{ 
    echo "Please Login to Access this Page | <a href='./teacherlogin.php'>Login</a>"; 
    //show above echo if user is not logged in
    }
    ?>

下面是完整的步骤。php:

<?php
$steps = array(1 =>'create_session.php',2 => 'QandATable.php',3 => 'individualmarks.php',4 => 'penalty.php',5 => 'penaltymarks',6 => 'complete.php');
function allowed_in($steps){
// Track $latestStep in either a session variable
// $currentStep will be dependent upon the page you're on
if(isset($_SESSION['latestStep'])){
   $latestStep = $_SESSION['latestStep'];
}
else{
   $latestStep = 0;
}
$currentStep = basename(__FILE__); 
$currentIdx = array_search($currentStep, $steps);
$latestIdx = array_search($latestStep, $steps);
if ($currentIdx - $latestIdx == 1 )
    {
       $currentIdx = $_SESSION['latestStep'];
       return 'Allowed';
    }
    return $latestIdx;
}
?>

This:

if ($currentIdx - $latestIdx > 1 ) {
   return 1;
} else {
    return 0;
}

我认为应该是这样的:

if ($currentIdx - $latestIdx >= 1 )
 {
    return true;
 } 
return false;

和不确定这是从哪里来的:

$pages[$currentPages+1]

您的steps数组也需要在函数外部声明如果您计划在url中使用它，则必须返回$latestIdx。我不确定你是想往回走还是向前走?

仍然不确定我是否完全理解你想要什么，但这应该是一个开始:

 $steps = array(1 =>'create_session.php',2 => 'QandATable.php',3 => 'individualmarks.php',4 => 'penalty.php',5 => 'penaltymarks',6 => 'complete.php');
function allowed_in($steps)
    {
        if(isset($_SESSION['latestStep']))
        {
            $latestStep = $_SESSION['latestStep'];
        }
        else
            {
                $latestStep = 0;
            }
            $currentStep = basename(__FILE__); 
$currentIdx = array_search($currentStep, $steps);
$latestIdx = array_search($latestStep, $steps);
if ($currentIdx - $latestIdx == 1 )
    {
       $currentIdx = $_SESSION['latestStep'];
       return 'Allowed';
    }
    return $latestIdx;
}

和

    if (allowed_in()=== "Allowed")
    {
        //create_session.php code
    }
    else
        {
$page = allowed_in()+1;
?>
<div class="boxed">
<a href="<?php echo $steps[$page] ?>">Continue</a>
</div>
<?php   
}
?>