PHP $_SESSION 数据不从页面保存到页面

我现在正在用头撞墙。我已经摆弄了几个小时，我似乎无法弄清楚。

当我从一个页面导航到另一个页面时，我的会话数据未保存。我已经在 WAMP，顺便说一句。

cookie 正在保存，会话数据仅在我在每个脚本开始时重置它时才有效。我不太确定在这里做什么。这可能是一件非常愚蠢的事情，但任何输入都非常感谢。

我的登录脚本：

<?php 

include('../partials/_header.php');
include('includes/connectvars.php');

if(!isset($_SESSION['id'])) { //logged in?
if(isset($_POST['submit'])) {       // form submitted?
if(!empty($_POST['email']) && !empty($_POST['password'])) { /* Check to make sure post isn't empty in case of JS override/disable */
        $email = mysqli_real_escape_string($dbc, trim($_POST['email']));
        $password = sha1(mysqli_real_escape_string($dbc, trim($_POST['password'])));
        /* query DB */
        $query = "SELECT * FROM users WHERE email = '$email' AND password = '$password'";
        $result = mysqli_query($dbc, $query) or die ("There was an error with your mySQL query:" . mysqli_error($dbc));
        if(mysqli_num_rows($result)==1) { /* Check that matching row exists in users for login */
                $row = mysqli_fetch_array($result);
                $_SESSION['id'] = $row['id']; // set the session info
                $_SESSION['type'] = $row['type'];
                $_SESSION['name'] = $row['f_name'];
                setcookie('id', $row['id'], time()+ (60*60*24*30));
                setcookie('type', $row['type'], time()+ (60*60*24*30));
                setcookie('name', $row['f_name'], time()+ (60*60*24*30));
                $home_url = '/'; //redirect not working with $_SERVER variable in WAMP. keep an eye for the future
                header('Location: '.$home_url);
                mysqli_close($dbc);
        } else { /* if no match in database ask to resubmit login info or register */?> 
                <script type="text/javascript" src="../js/jquery.validate.js"></script>
                        <script>
                            $(document).ready(function(){
                                  $("#login_form").validate();
                                 });
                        </script>
                        <div class="span-24 colborder">
                            <form id="login_form" action="<?php $_SERVER['PHP_SELF'] ?>" method="post">
                                <label class="error">Your email and/or password are incorrect. </label><br />
                                <label class="error">If you haven't already signed up, feel free to <a href="user_registration.php" > register</a> </label><br /> 
                                <input type="text" name="email" id="email" value="" class="email required" placeholder="example@example.com"/> <br />
                                <input type="password" name="password" id="password" class="required" value="" /> <br />
                                <input type="submit" name="submit" value="Login" /> 
                            </form>
                        </div>
    <?php

        }/* end conditional to check $rows array for username pw match */
    } /* end conditional to check that form isn't blank */ 
    else { /* If form is blank ask to resubmit or register */?> 
                        <script type="text/javascript" src="../js/jquery.validate.js"></script>
                        <script>
                            $(document).ready(function(){
                                  $("#login_form").validate();
                                 });
                        </script>
        <div class="span-24 colborder">
            <form id="login_form" action="<?php $_SERVER['PHP_SELF'] ?>" method="post">
                <label class="error">You must enter your email and password if you wish to continue.</label><br />
                <input type="text" name="email" id="email" value="" class="email required" placeholder="example@example.com"/> <br />
                <input type="password" name="password" id="password" class="required" value="" /> <br />
                <input type="submit" name="submit" value="Login" /> 
            </form>
        </div>
    <?php
    } // end else to resubmit in case of blank form
    } /* end check if form has been submitted */ else{ /* prompt for login if page visited but login form not submitted */ ?>
        <script type="text/javascript" src="../js/jquery.validate.js"></script>
                        <script>
                            $(document).ready(function(){
                                  $("#login_form").validate();
                                 });
                        </script>
        <div class="span-24 colborder">
            <form id="login_form" action="<?php $_SERVER['PHP_SELF'] ?>" method="post">
                <label class="error">You must be logged in to do that!.</label><br />
                <input type="text" name="email" id="email" value="" class="email required" placeholder="example@example.com"/> <br />
                <input type="password" name="password" id="password" class="required" value="" /> <br />
                <input type="submit" name="submit" value="Login" /> 
            </form>
        </div>  
                                                                    <?php
                                                                    }
    } /* end check if cookie isset */ else { //redirect if cookies & session is already set
                                                    $home_url = '/'; 
                                                    header('Location: '.$home_url);
                                                        }

?>

<?php include('partials/_footer.php'); ?>

这是我的标头（如果 cookie 是设置，则包括设置会话变量）

<?php //set session if isset cookie but not session
                session_start();
if(!isset($_SESSION['id'])) {
        if(isset($_COOKIE['id']) && isset($_COOKIE['name']) && isset($_COOKIE['type'])) {
                $_SESSION['id'] = $_COOKIE['id'];
                $_SESSION['name'] = $_COOKIE['name'];
                $_SESSION['type'] = $_COOKIE['type'];
            }       
    }   //end if !isset session verify

?>

以及根据会话 ID 的菜单输出示例：

            <?php 
        if(isset($_SESSION['type']) && $_SESSION['type'] == "rnr") { //start special runner menu options
    ?> 
            <ul class="main_menu">
            <li id="how_it_works" class="main_menu"><a class="main_menu" href="/user/bid_task.php">Bid on a task</a></li>
            <li id="our_runners" class="main_menu"><a class="main_menu" href="/our_runners.php">Our Runners</a></li>
            <li id="login" class="main_menu"><a class="main_menu" href="/user/my_account.php">My account</a></li>
            <li id="register" class="main_menu"><a class="main_menu" href="/user/logout.php">Logout</a></li>
        </ul>       

    <?php } /* end runner menu */ ?>

提前谢谢。