Question

我无法在php中设置会话，我找不到原因。

希望你能给我一个线索，我可能会做错事！

的index.php

<?php
    // Inialize session
    session_start();

    include_once("commons/config.php");
    $authenticated = checkLoggedIn("yes", FALSE);
    //flushMemberSession();

    var_dump($authenticated);

    echo "<pre>";
    var_dump($_SESSION);
    echo "</pre>";
?>
... followed by html and some php ifs

jquery ajax调用WHICH RETURNS TRUE 或 FALSE ，应该来自checkPass() actions.php内的$('#login').click(function(){ var data = $('#login-form').serialize(); $.post('commons/actions.php', data, function(result){ if(result == true){ console.log(result); //location.reload(); }else{ console.log('not authenthicated'); } },'json'); return false; });

session_start();
if (!$_SERVER['SERVER_ADDR'] == $_SERVER['REMOTE_ADDR']){
    header('HTTP/1.0 400 Unauthorized', true, 400);
    exit;
} else {

    include('config.php');

    $user = mysql_real_escape_string(stripslashes($_POST['username']));
    $pass = mysql_real_escape_string(stripslashes($_POST['password']));

    $response = checkPass($user, $pass); // false or

    $debug = array('user'=>$user, 'pass'=>$pass, 'response'=>$response);

    print_r(json_encode($response));

}

actions.php

function checkLoggedIn($status, $redirect=TRUE){
    switch($status){
        case "yes":
            if(!isset($_SESSION["loggedIn"])){
                if($redirect) {
                    header("Location: login.php");
                    exit;
                } else {
                    $authenticated = false;
                    return $authenticated;
                }
            } else {
                checkLoggedIn("no");
            }
        break;
        case "no":
            if(isset($_SESSION["loggedIn"]) && $_SESSION["loggedIn"] === true ){
                //header("Location: members.php");
                $authenticated = true;
                return $authenticated;
            }
        break;
    }   
    return true;
}

function checkPass($username, $password) {
    $query="SELECT username, password FROM users WHERE username='$username' and password='$password'";
    $result=mysql_query($query, $link) or die("checkPass fatal error: ".mysql_error());

// Check exactly one row is found:
if(mysql_num_rows($result)==1) {
    cleanMemberSession($username);
    return true;
    /*$row=mysql_fetch_array($result);
    return $row;*/
}
//Bad username:
return false;
}

function cleanMemberSession($username) {
session_regenerate_id();
$_SESSION["username"]=$username;
$_SESSION["loggedIn"]=true;
session_write_close();
}

功能：

Response Headers
Connection  Keep-Alive
Content-Length  4
Content-Type    text/html
Date    Sun, 27 May 2012 19:36:54 GMT
Keep-Alive  timeout=5, max=100
Server  Apache/2.2.21 (Win32) mod_ssl/2.2.21 OpenSSL/1.0.0e PHP/5.3.8 mod_perl/2.0.4 Perl/v5.10.1
X-Powered-By    PHP/5.3.8
Request Headers
Accept  application/json, text/javascript, */*; q=0.01
Accept-Encoding gzip, deflate
Accept-Language en-us,en;q=0.5
Connection  keep-alive
Content-Length  31
Content-Type    application/x-www-form-urlencoded; charset=UTF-8
Cookie  PHPSESSID=qhbjq76f4np7iug09jrnl4j5j1
Host    localhost
Referer http://localhost/tw/Tevienes/web/
User-Agent  Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0
X-Requested-With    XMLHttpRequest

更新

AJAX标题

var_dump($_SESSION);

UPDATE2

顺便说一句，对array(0) { }的回复是$_SESSION['test'] = 'alex';

UPDATE3

我刚刚在{。{1}}之后在index.php中添加了session_start();，并且会话变量已经设置...所以它必须是函数设置变量的东西......或者谁知道什么其他

Answer 1

将session_start（）放在所有被调用的.php文件中，也就是从ajax调用的文件。同样在actions.php的开头，将括号放在比较上。！运算符的优先级高于＆lt;或＆gt;。

变化

 if (!$_SERVER['SERVER_ADDR'] == $_SERVER['REMOTE_ADDR']){

到

 if (!($_SERVER['SERVER_ADDR'] == $_SERVER['REMOTE_ADDR'])){

Answer 2

远射和愚蠢，但检查服务器和客户端上的日期和时间是否设置正确。如果任何一个设置不正确，会话cookie将/可能不会被设置。

无法获取php来设置会话

更新

UPDATE2

UPDATE3

2 个答案: