PHP 标头重定向清除 Firefox 和 Safari 中的会话数据

如果未找到 $_POST 错误，则变量设置为会话，页面将重定向到自身以清除 post 数组。从重定向重新加载页面后，会话将设置为标准变量，会话将被取消设置并销毁。

不幸的是，我又回到了起点。在chrome中一切正常，但是像Firefox和safari这样的浏览器不会存储会话。重定向后，这些浏览器中的页面不会输出表单提交的任何结果，并且表单为空。

明确的是，某些浏览器在处理标头重定向和存储会话数据时遇到问题，但我不明白为什么。

header("Location: /poop-calculator/",TRUE,303);

一切都按预期在所有浏览器中正常工作，而无需上面的标题重定向。但是我需要让它工作以避免页面刷新时重复提交。

这是我目前正在使用的内容：

session_start();error_reporting(E_ALL); ini_set('display_errors',1);

if(count($_POST) > 0) {

//Error Checking

$EC = 0;

if (isset($_POST['submit'])&&empty($_POST['dob-month'])){
$EC++;
$errors[$EC] = "Select a month"; 
}
if (isset($_POST['submit'])&&empty($_POST['dob-day'])|| $_POST['dob-day'] < 1 || $_POST['dob-day'] > 31){
$EC++;
$errors[$EC] = "Enter a day between 1 and 31";
}
if (isset($_POST['submit'])&&empty($_POST['dob-year'])|| $_POST['dob-year'] < 1900 || $_POST['dob-year'] > date('Y')){
$EC++;
$errors[$EC] = "Enter a year between 1900 and ".date('Y');
}

if(!empty($errors)){
echo '<div class="woocommerce-error">
<div class="errorSpacer"></div>';

foreach($errors as $error){
echo '<div class="error-wrapper">
         <div class="erroWrapperLeft">
         <p class="errorIcon"></p>
            </div>
            <div class="erroWrapperRight">
             <p class="errorText">'.$error.'</p>
            </div>
       </div>';
  }
echo "</div>";
} 

//set sessions

if(empty($errors)&& isset($_POST['submit'])){
(isset($_POST['dob-month'])? $_SESSION['dob-month'] = $_POST['dob-month']:$_SESSION['dob-month'] = null);
(isset($_POST['dob-day'])? $_SESSION['dob-day'] = ltrim(sanitizeNumInput($_POST['dob-day']),'0'):$_SESSION['dob-day'] =  null);
(isset($_POST['dob-year'])?$_SESSION['dob-year'] = sanitizeNumInput($_POST['dob-year']):$_SESSION['dob-year'] =null);
(isset($_POST['submit'])?$_SESSION['submit'] = 1:$_SESSION['submit'] = null);

header("Location: /calculator/",TRUE,303);
}

//set variables and clear sessions

    }
if (isset($_SESSION['dob-month'])||isset($_SESSION['dob-day'])||isset($_SESSION['dob-year'])||isset($_SESSION['submit'])){
        (isset($_SESSION['dob-month'])? $month = $_SESSION['dob-month']:$month = null);
(isset($_SESSION['dob-day'])? $day = ltrim(sanitizeNumInput($_SESSION['dob-day']),'0'): $day = null);
(isset($_SESSION['dob-year'])?$year = sanitizeNumInput($_SESSION['dob-year']):$year=null);
(isset($_SESSION['submit'])?$submit = $_SESSION['submit']: $submit = null );


        session_unset();
        session_destroy();

    }