javascript - 无法通过 Ajax 从文件 PHP 调用检查 session

Question

我使用DataTables服务器端来制作表格。我调用login.php 通过Ajax 从数据库获取一些值。这是数据表代码:

<?PHP session_start(); ?>

    <script type="text/javascript" language="javascript" class="init">    
$(document).ready(function() {
    t = $('#table_stok').dataTable({
    "bJQueryUI": true,
    "sPaginationType": "full_numbers",
    "processing": true,
    "serverSide": true,
    "ajax": "php/query/login.php"
    });
} );

</script>

我在 Ajax 之上调用了 session_start() 。这是连接到表的文件 login.php:

<?PHP
session_start();
if(empty($_SESSION['login'])){
$db_username    = 'root';
$db_password    = '';
$db_name        = 'dbmaster2';
$db_host        = 'localhost';
}else if($_SESSION['login']==1){
$db_username    = 'root';
$db_password    = '';
$db_name        = 'dbmaster2';
$db_host        = 'localhost';
}else{
$db_username    = 'root';
$db_password    = '';
$db_name        = 'dewata';
$db_host        = 'localhost';
}

$sql_details = array(
'user' => $db_username,
'pass' => $db_password,
'db'   => $db_name,
'host' => $db_host
);
?>

我从测试中得到的结果是，如果我通过ajax 运行我的login.php 则无法检查 session 。但是当我通过浏览器(localhost/dewata/php/query/login.php)运行它时，它可以正常检测 session 。如何从ajax调用的php文件中检查 session ？某处是否缺少代码？

Answer 1

我添加此代码:

if(session_id() == '' || !isset($_SESSION)) { session_start(); }    
if(empty($_SESSION['login'])){
$db_username    = 'root';
$db_password    = '';
$db_name        = 'dbmaster2';
$db_host        = 'localhost';
}else if($_SESSION['login']==1){
$db_username    = 'root';
$db_password    = '';
$db_name        = 'dbmaster2';
$db_host        = 'localhost';
}else{
$db_username    = 'root';
$db_password    = '';
$db_name        = 'dewata';
$db_host        = 'localhost';
}

$sql_details = array(
'user' => $db_username,
'pass' => $db_password,
'db'   => $db_name,
'host' => $db_host
);

我的 php 功能正常:)感谢您的帮助。