我正在尝试在CodeIgniter中构建一个Login系统。到目前为止一切正常，直到我必须将细节保存到SESSION中。我尝试了很多东西，但是我尝试了多少，当我转储它时，SESSION数组是空的。
public function submit()
{
$this->load->helper(array('form'));
// authenticate
$username = $this->input->post('txtLogin');
$password = $this->input->post('txtPassword');
//query the database
$result = $this->user->login($username, $password);
if($result)
{
session_start();
$sess_array = array();
foreach($result as $row)
{
$sess_array = array(
'id' => $row->GebruikerID,
'username' => $row->Email
);
$this->session->set_userdata('logged_in', $sess_array);
redirect('dashboard');
}
这是我检查凭据的部分，如果成功，我设置了会话。
注意：我还尝试将session_start();放在页面顶部，甚至在代码中没有session_start();的情况下进行了尝试。
if($this->session->userdata('logged_in'))
{
print_r($_SESSION);
exit();
}
这是我检查会话是否在另一个控制器中设置的部分。
print_r($_SESSION)的结果：
Array();
我不知道我哪里出错了。
编辑：
这是我的配置文件：
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/*
|--------------------------------------------------------------------------
| Base Site URL
|--------------------------------------------------------------------------
|
| URL to your CodeIgniter root. Typically this will be your base URL,
| WITH a trailing slash:
|
| http://example.com/
|
| If this is not set then CodeIgniter will guess the protocol, domain and
| path to your installation.
|
*/
$config['base_url'] = '';
/*
|--------------------------------------------------------------------------
| Index File
|--------------------------------------------------------------------------
|
| Typically this will be your index.php file, unless you've renamed it to
| something else. If you are using mod_rewrite to remove the page set this
| variable so that it is blank.
|
*/
$config['index_page'] = 'index.php';
/*
|--------------------------------------------------------------------------
| URI PROTOCOL
|--------------------------------------------------------------------------
|
| This item determines which server global should be used to retrieve the
| URI string. The default setting of 'AUTO' works for most servers.
| If your links do not seem to work, try one of the other delicious flavors:
|
| 'AUTO' Default - auto detects
| 'PATH_INFO' Uses the PATH_INFO
| 'QUERY_STRING' Uses the QUERY_STRING
| 'REQUEST_URI' Uses the REQUEST_URI
| 'ORIG_PATH_INFO' Uses the ORIG_PATH_INFO
|
*/
$config['uri_protocol'] = 'AUTO';
/*
|--------------------------------------------------------------------------
| URL suffix
|--------------------------------------------------------------------------
|
| This option allows you to add a suffix to all URLs generated by CodeIgniter.
| For more information please see the user guide:
|
| http://codeigniter.com/user_guide/general/urls.html
*/
$config['url_suffix'] = '';
/*
|--------------------------------------------------------------------------
| Default Language
|--------------------------------------------------------------------------
|
| This determines which set of language files should be used. Make sure
| there is an available translation if you intend to use something other
| than english.
|
*/
$config['language'] = 'english';
/*
|--------------------------------------------------------------------------
| Default Character Set
|--------------------------------------------------------------------------
|
| This determines which character set is used by default in various methods
| that require a character set to be provided.
|
*/
$config['charset'] = 'UTF-8';
/*
|--------------------------------------------------------------------------
| Enable/Disable System Hooks
|--------------------------------------------------------------------------
|
| If you would like to use the 'hooks' feature you must enable it by
| setting this variable to TRUE (boolean). See the user guide for details.
|
*/
$config['enable_hooks'] = FALSE;
/*
|--------------------------------------------------------------------------
| Class Extension Prefix
|--------------------------------------------------------------------------
|
| This item allows you to set the filename/classname prefix when extending
| native libraries. For more information please see the user guide:
|
| http://codeigniter.com/user_guide/general/core_classes.html
| http://codeigniter.com/user_guide/general/creating_libraries.html
|
*/
$config['subclass_prefix'] = 'MY_';
/*
|--------------------------------------------------------------------------
| Allowed URL Characters
|--------------------------------------------------------------------------
|
| This lets you specify with a regular expression which characters are permitted
| within your URLs. When someone tries to submit a URL with disallowed
| characters they will get a warning message.
|
| As a security measure you are STRONGLY encouraged to restrict URLs to
| as few characters as possible. By default only these are allowed: a-z 0-9~%.:_-
|
| Leave blank to allow all characters -- but only if you are insane.
|
| DO NOT CHANGE THIS UNLESS YOU FULLY UNDERSTAND THE REPERCUSSIONS!!
|
*/
$config['permitted_uri_chars'] = 'a-z 0-9~%.:_\-';
/*
|--------------------------------------------------------------------------
| Enable Query Strings
|--------------------------------------------------------------------------
|
| By default CodeIgniter uses search-engine friendly segment based URLs:
| example.com/who/what/where/
|
| By default CodeIgniter enables access to the $_GET array. If for some
| reason you would like to disable it, set 'allow_get_array' to FALSE.
|
| You can optionally enable standard query string based URLs:
| example.com?who=me&what=something&where=here
|
| Options are: TRUE or FALSE (boolean)
|
| The other items let you set the query string 'words' that will
| invoke your controllers and its functions:
| example.com/index.php?c=controller&m=function
|
| Please note that some of the helpers won't work as expected when
| this feature is enabled, since CodeIgniter is designed primarily to
| use segment based URLs.
|
*/
$config['allow_get_array'] = TRUE;
$config['enable_query_strings'] = FALSE;
$config['controller_trigger'] = 'c';
$config['function_trigger'] = 'm';
$config['directory_trigger'] = 'd'; // experimental not currently in use
/*
|--------------------------------------------------------------------------
| Error Logging Threshold
|--------------------------------------------------------------------------
|
| If you have enabled error logging, you can set an error threshold to
| determine what gets logged. Threshold options are:
| You can enable error logging by setting a threshold over zero. The
| threshold determines what gets logged. Threshold options are:
|
| 0 = Disables logging, Error logging TURNED OFF
| 1 = Error Messages (including PHP errors)
| 2 = Debug Messages
| 3 = Informational Messages
| 4 = All Messages
|
| For a live site you'll usually only enable Errors (1) to be logged otherwise
| your log files will fill up very fast.
|
*/
$config['log_threshold'] = 0;
/*
|--------------------------------------------------------------------------
| Error Logging Directory Path
|--------------------------------------------------------------------------
|
| Leave this BLANK unless you would like to set something other than the default
| application/logs/ folder. Use a full server path with trailing slash.
|
*/
$config['log_path'] = '';
/*
|--------------------------------------------------------------------------
| Date Format for Logs
|--------------------------------------------------------------------------
|
| Each item that is logged has an associated date. You can use PHP date
| codes to set your own date formatting
|
*/
$config['log_date_format'] = 'Y-m-d H:i:s';
/*
|--------------------------------------------------------------------------
| Cache Directory Path
|--------------------------------------------------------------------------
|
| Leave this BLANK unless you would like to set something other than the default
| system/cache/ folder. Use a full server path with trailing slash.
|
*/
$config['cache_path'] = '';
/*
|--------------------------------------------------------------------------
| Encryption Key
|--------------------------------------------------------------------------
|
| If you use the Encryption class or the Session class you
| MUST set an encryption key. See the user guide for info.
|
*/
$config['encryption_key'] = 'You're not allowed to see this';
/*
|--------------------------------------------------------------------------
| Session Variables
|--------------------------------------------------------------------------
|
| 'sess_cookie_name' = the name you want for the cookie
| 'sess_expiration' = the number of SECONDS you want the session to last.
| by default sessions last 7200 seconds (two hours). Set to zero for no expiration.
| 'sess_expire_on_close' = Whether to cause the session to expire automatically
| when the browser window is closed
| 'sess_encrypt_cookie' = Whether to encrypt the cookie
| 'sess_use_database' = Whether to save the session data to a database
| 'sess_table_name' = The name of the session database table
| 'sess_match_ip' = Whether to match the user's IP address when reading the session data
| 'sess_match_useragent' = Whether to match the User Agent when reading the session data
| 'sess_time_to_update' = how many seconds between CI refreshing Session Information
|
*/
$config['sess_cookie_name'] = 'ci_session';
$config['sess_expiration'] = 7200;
$config['sess_expire_on_close'] = FALSE;
$config['sess_encrypt_cookie'] = FALSE;
$config['sess_use_database'] = FALSE;
$config['sess_table_name'] = 'ci_sessions';
$config['sess_match_ip'] = FALSE;
$config['sess_match_useragent'] = TRUE;
$config['sess_time_to_update'] = 300;
/*
|--------------------------------------------------------------------------
| Cookie Related Variables
|--------------------------------------------------------------------------
|
| 'cookie_prefix' = Set a prefix if you need to avoid collisions
| 'cookie_domain' = Set to .your-domain.com for site-wide cookies
| 'cookie_path' = Typically will be a forward slash
| 'cookie_secure' = Cookies will only be set if a secure HTTPS connection exists.
|
*/
$config['cookie_prefix'] = "";
$config['cookie_domain'] = "";
$config['cookie_path'] = "/";
$config['cookie_secure'] = FALSE;
/*
|--------------------------------------------------------------------------
| Global XSS Filtering
|--------------------------------------------------------------------------
|
| Determines whether the XSS filter is always active when GET, POST or
| COOKIE data is encountered
|
*/
$config['global_xss_filtering'] = FALSE;
/*
|--------------------------------------------------------------------------
| Cross Site Request Forgery
|--------------------------------------------------------------------------
| Enables a CSRF cookie token to be set. When set to TRUE, token will be
| checked on a submitted form. If you are accepting user data, it is strongly
| recommended CSRF protection be enabled.
|
| 'csrf_token_name' = The token name
| 'csrf_cookie_name' = The cookie name
| 'csrf_expire' = The number in seconds the token should expire.
*/
$config['csrf_protection'] = FALSE;
$config['csrf_token_name'] = 'csrf_test_name';
$config['csrf_cookie_name'] = 'csrf_cookie_name';
$config['csrf_expire'] = 7200;
/*
|--------------------------------------------------------------------------
| Output Compression
|--------------------------------------------------------------------------
|
| Enables Gzip output compression for faster page loads. When enabled,
| the output class will test whether your server supports Gzip.
| Even if it does, however, not all browsers support compression
| so enable only if you are reasonably sure your visitors can handle it.
|
| VERY IMPORTANT: If you are getting a blank page when compression is enabled it
| means you are prematurely outputting something to your browser. It could
| even be a line of whitespace at the end of one of your scripts. For
| compression to work, nothing can be sent before the output buffer is called
| by the output class. Do not 'echo' any values with compression enabled.
|
*/
$config['compress_output'] = FALSE;
/*
|--------------------------------------------------------------------------
| Master Time Reference
|--------------------------------------------------------------------------
|
| Options are 'local' or 'gmt'. This pref tells the system whether to use
| your server's local time as the master 'now' reference, or convert it to
| GMT. See the 'date helper' page of the user guide for information
| regarding date handling.
|
*/
$config['time_reference'] = 'local';
/*
|--------------------------------------------------------------------------
| Rewrite PHP Short Tags
|--------------------------------------------------------------------------
|
| If your PHP installation does not have short tag support enabled CI
| can rewrite the tags on-the-fly, enabling you to utilize that syntax
| in your view files. Options are TRUE or FALSE (boolean)
|
*/
$config['rewrite_short_tags'] = FALSE;
/*
|--------------------------------------------------------------------------
| Reverse Proxy IPs
|--------------------------------------------------------------------------
|
| If your server is behind a reverse proxy, you must whitelist the proxy IP
| addresses from which CodeIgniter should trust the HTTP_X_FORWARDED_FOR
| header in order to properly identify the visitor's IP address.
| Comma-delimited, e.g. '10.0.1.200,10.0.1.201'
|
*/
$config['proxy_ips'] = '';
/* End of file config.php */
/* Location: ./application/config/config.php */
编辑： 解决了！感谢WebHQ。
这就是诀窍：
我看到两个问题。首先，您设置会话数据错误（[manual]＆gt;＆gt;（http://ellislab.com/codeigniter/user-guide/libraries/sessions.html））：
改变这个：
$ this-＆gt; session-＆gt; set_userdata（'logged_in'，$ sess_array）;
进入这个：
$这 - ＆GT;会话而＆GT; set_userdata（$ sess_array）;
然后读取这样的会话数据：
$这 - ＆GT;会话而＆GT;用户数据（ '编号'）; $这 - ＆GT;会话而＆GT;用户数据（ '用户名'）;
祝你好运！
答案 0 :(得分：2)
我看到两个问题。首先，您设置会话数据错误（manual）：
改变这个：
$this->session->set_userdata('logged_in', $sess_array);
进入这个：
$this->session->set_userdata($sess_array);
然后读取这样的会话数据：
$this->session->userdata('id');
$this->session->userdata('username');
祝你好运！
答案 1 :(得分：1)
从每个地方删除session_start(); ..
打开autoload.php并设置：
$autoload['libraries'] = array('session','encryption');
然后打开config.php并设置：
$config['encryption_key'] = 'your-key-here';
然后按如下方式尝试设置会话：
$session_user = array(
'id' => $row->GebruikerID,
'username' => $row->Email
);
$this->session->set_userdata($session_user);
然后像这样转储：
print_r($this->session->userdata('id'));
print_r($this->session->userdata('username'));
试试这个并检查这项工作
答案 2 :(得分：0)
您的会话必须从第一个php文件的第一行开始，例如，您将此文件包含到另一个文件中，您必须在第一个文件中执行此操作。
通常在index.php
中<?php
session_start();//always on the first line of the file after opening the <?php also before any html code
public function submit()
{
$this->load->helper(array('form'));
// authenticate
$username = $this->input->post('txtLogin');
$password = $this->input->post('txtPassword');
//query the database
$result = $this->user->login($username, $password);
if($result)
{
$sess_array = array();
foreach($result as $row)
{
$sess_array = array(
'id' => $row->GebruikerID,
'username' => $row->Email
);
$this->session->set_userdata('logged_in', $sess_array);
redirect('dashboard');
}
答案 3 :(得分：0)
从代码中删除session_start（）。 CodeIgniter将处理会话初始化。
因为CodeIgniter使用命名会话，所以您需要首先指定它以使用PHP本机会话：
session_name('ci_session');
session_start();
但你不应该这样做。 CodeIgniter has a Session class的全部原因是充当本机PHP和CodeIgniter会话之间的接口（特别是与数据库一起使用时）。您不必使用PHP会话方法开始。
实际上，通过运行session_start()，您可能会从CodeIgniter会话切换到PHP本机会话，但您仍在使用CodeIgniter会话调用，因此不会将任何内容保存到您正在使用的PHP会话中。< / p>