A simple access control _php technique by hook in CI frame

According to own actual situation, needs two files, one is the permission control class, the ACL, another is the permission configuration file acl.php placed in the config this directory.

This class of ACLs is placed in the application/hook/acl.php. Open the hook through the application/config/config.php file and configure the hook.php file in the directory of CONFIG.

1, open the hook function, config.php this file

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/*
|--------------------------------------------------------------------------
| Enable/disable System Hooks
|--------------------------------------------------------------------------
|
| If you are would like to use the ' hooks ' feature your must enable it by
|  Setting this variable to TRUE (Boolean). The user guide for details.
|
*/
$config [' enable_hooks '] = TRUE;

2, configure hook.php this file

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/*
| -------------------------------------------------------------------------
| Hooks
| -------------------------------------------------------------------------
| This file lets your define "hooks" to extend CI without hacking the core
|  Files. Please, the User guide for info:
|
| Http://codeigniter.com/user_guide/general/hooks.html
|
*/
$hook [' post_controller_constructor '] = Array (
' Class ' => ' Acl ',
' function ' => ' auth ',
' filename ' => ' acl.php ',
' filepath ' => ' hooks '
);

The specific parameter description can refer to the link address of the document, especially pay attention to post_controller_constructor this value, can choose different according to the situation.

3, write the right configuration file acl.php placed in the Config directory.

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$config [' AUTH '] = Array (
Super_admin => Array (
' Admin ' => Array (' index ', ' logout '),
),
ADMIN => Array (
' Admin ' => Array (' index ', ' logout '),
),
GUEST => Array (
' Admin ' => Array (' index ', ' logout '),
),
);

Here is only what I have defined according to my own situation, not the real data, according to my own situation. There are also major variable names to be $config, so that it is easy to load and use.

4, write specific permissions to control ACL classes

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Class Acl {
Private $url _model;
Private $url _method;
Private $CI;
function Acl ()
{
$this->ci =& get_instance ();
$this->ci->load->library (' Session ');
$this->url_model = $this->ci->uri->segment (1);
$this->url_method = $this->ci->uri->segment (2);
}
function auth ()
{
$user = $this->ci->session->userdata (' user ');
if (empty ($user))
$user->status = 0;
$this->ci->load->config (' ACL ');
$AUTH = $this->ci->config->item (' AUTH ');
if (In_array ($user->status, Array_keys ($AUTH))) {
$controllers = $AUTH [$user->status];
if (In_array ($this->url_model, Array_keys ($controllers))) {
if (!in_array ($this->url_method, $controllers [$this->url_model])) {
Show_error (' You do not have access to this feature, the error has been recorded! Click <a href= "'. Site_url (' Admin/logout '). " > Return </a> ');
}
}else{
Show_error (' You do not have access to the module, the error has been recorded! Click <a href= "'. Site_url (' Admin/logout '). " > Return </a> ');
}
}
Else
Show_error (' Wrong user type, this error has been logged! Click <a href= "'. Site_url (' Admin/logout '). " > Return </a> ');
}
}

Overall is such a form, and finally, according to their own actual situation to determine.

It is to be noted that:

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$this->ci =& get_instance ();

The above only realizes the simple permission control, the small partner may according to own demand, the free expansion under.