我不能从我的另一个页面PHP调用变量 - I can't call variables from my other page PHP

I can't call variables from my other page PHP

<!-- LOGIN -->
        <div id="loginContainer">
            <form action='<?php echo $_SERVER['PHP_SELF']; ?>' method='POST'>
            <div id="emailPasswordContainer">
                <input type="text" id="loginInputEmail" placeholder="Email" name="emailA" maxlength="35" required></input>
                <input type="password" id="loginInputPassword" placeholder="Password" name="passwordA" maxlength="35" required></input>
            </div>
                <button type="submit" name="submitLogin" value="submit" id="buttonLogin">
                    <span id="loginText">
                        Login
                    </span>
                </button>
            </form>
            <?php
                $loginErrorMessage = "";
                // start the session and register the session variables
                session_start("ProtectVariables");
                if(isset($_POST['submitLogin'])) {
                    $emailLogin = $_POST['emailA'];
                    $passwordLogin = md5($_POST['passwordA']);
                    $loginQuery = "SELECT email,password FROM account WHERE email='" . $emailLogin . "' AND password='" . $passwordLogin . "'";
                    $loginResult = mysql_query($loginQuery,$db);
                    if(mysql_num_rows($loginResult)==1){
                        if ($_POST['submitLogin']) {
                            header("Location: page2.php?page=1");
                        }
                    }
                    else {
                        $loginErrorMessage = "";
                    }
                }
            ?>
        </div>

这是我用来登录到我的网站的代码!但到了page2。php呢?page=1，它将不允许我调用任何变量，如$emailLogin或$passwordLogin。我想在page2.php上使用$emailLogin的原因是我可以让它成为用户的名字。我不确定这是这段代码的问题还是我在另一个页面上调用它的方式是这样的:echo $emailLogin;

提前感谢您的帮助!: D

 $loginQuery = "SELECT email,password FROM account WHERE email='" . $emailLogin . "' AND password='" . $passwordLogin . "'";    
$loginResult = mysql_query($loginQuery);
$admin_row=mysql_fetch_array($loginResult );      
     if (mysql_num_rows($loginResult ) == 1)
         { 
          session_start();
           $getemail=$admin_row['email'];
         //session_register("uname");
         $_SESSION['logged_user']=$getemail;
       header("Location: page2.php?page=1");
            }

在page2.php中，你可以使用下面的代码打印登录用户的电子邮件

<?php
session_start();
echo $_SESSION['logged_user'];
?>