PHP uses CI to implement URL permission control using hooks_PHP tutorial

CI's hook function allows you to change or increase the core running functions of the system without modifying the core system files.

For example, you can run a specific script just before or just after the controller loads, or trigger your script at other times.

Look at the code:

 

 

Add hook statement in system/application/config/hooks.php: 

[php]

       

$hook['post_controller_constructor'] = array( 

'class' => 'Acl', 

'function' => 'filter', 

'filename' => 'acl.php', 

'filepath' => 'hooks', 

); 



Make the hook system take effect in system/application/config/config.php 

       

$config['enable_hooks'] = TRUE; 



Then create a new acl.php permission system configuration file in , of course you can also put it in the database. 



       

//Visitor permission mapping 

$config['acl']['visitor'] = array( 

​ '' => array('index'),//Homepage www.2cto.com 

'music' => array('index', 'list'), 

'user' => array('index', 'login', 'register') 

); 

//Administrator 

$config['acl']['admin'] = array( 



); 



//-------------Configure prompt information and jump url for insufficient permissions------------------// 

$config['acl_info']['visitor'] = array( 

'info' => 'Login required to continue', 

'return_url' => 'user/login' 

); 



$config['acl_info']['more_role'] = array( 

'info' => 'Requires higher privileges to continue', 

'return_url' => 'user/up' 

); 



/* End of file acl.php */ 

/* Location: ./application/config/acl.php */ 



Add acl.php logical processing file in the system/application/hooks directory 



       

class Acl 

{ 

Private $url_model;//Module accessed, such as: music 

Private $url_method;//The accessed method, such as: create 

Private $url_param;//The parameter in the url may be 1 or id=1&name=test 

private $CI; 



Function Acl() 

{ 

           $this->CI = & get_instance(); 

            $this->CI->load->library('session'); 



         $url = $_SERVER['PHP_SELF']; 

          $arr = explode('/', $url); 

          $arr = array_slice($arr, array_search('index.php', $arr) + 1, count($arr)); 

            $this->url_model = isset($arr[0]) ? $arr[0] : ''; 

            $this->url_method = isset($arr[1]) ? $arr[1] : 'index'; 

            $this->url_param = isset($arr[2]) ? $arr[2] : ''; 

}  
  

    function filter() 

    { 

        $user = $this->CI->session->userdata('user'); 

        if (emptyempty($user)) {//游客visitor 

            $role_name = 'visitor'; 

        } else { 

            $role_name = $user->role; 

        } 

  

        $this->CI->load->config('acl'); 

        $acl = $this->CI->config->item('acl'); 

        $role = $acl[$role_name]; 

        $acl_info = $this->CI->config->item('acl_info'); 

  

        if (array_key_exists($this->url_model, $role) && in_array($this->url_method, $role[$this->url_model])) { 

            ; 

        } else {//无权限，给出提示，跳转url 

            $this->CI->session->set_flashdata('info', $acl_info[$role_name]['info']); 

            redirect($acl_info[$role_name]['return_url']); 

        } 

    } 

} 



摘自 I am heweilun						



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