About Library

class Donaturlib {


   function is_admin()
    {            
        $ci     =&get_instance();
            $cek = $ci->donaturlib->security();    
                        if($cek != null)
                        {
                                       foreach ($cek as $key) {
                                       $username =  $key->username;
                                       }
                                       $hasil = $ci->donaturlib->getPeople($username);
                                       foreach ($hasil as $levelnya ) {
                                           $lv = $levelnya->level;
                                       }
                                       if ($lv != 1) {
                                           return false;
                                       }
                                       else
                                       {
                                           return true;
                                       }
                        }else{
        $msg="<div class='alert alert-danger alert-dismissible' role='alert'>
  <button type='button' class='close' data-dismiss='alert'>
  <span aria-hidden='true'>&times;</span><span class='sr-only'>Close</span></button>
  <strong>Harap login terlebih dahulu
</div>";
        $ci->session->set_flashdata('donatur',$msg);
        redirect('welcome','refresh');
                        }

   }
    function getPeople($username)
    {
            $ci     =&get_instance();
            $query  =   $ci->db->query("select level from user where username ='$username'");
            return $query->result();
    }
    function checkexist($namadonasi,$tabel1)
    {
            $ci         =   &get_instance();
            $fieldpilih    ='*'; 
            $hasil         = $ci->modeldonatur->pilihdata($tabel1,$namadonasi,$fieldpilih);    
            if($hasil!=null)
            {
                return true;
            }
            else
            {
                return false;
            }
    }
    function security()
        {
            $ci     =&get_instance();
            $vCuser     = $ci->input->cookie('dnt_user');
            $vCsesi     = $ci->input->cookie('dnt_sesi');
            $tbl='logindata';
            $fieldpilih='*'; 
            $fieldkondisi=array('username'=>$vCuser,'sesi'=>$vCsesi);             
            $hasil      = $ci->modeldonatur->pilihdata($tbl,$fieldkondisi,$fieldpilih);
            
            if($hasil!=null)
            {
            //simpan ke cookie
            $vCookie1['name']   = 'ik_inv_ck_user';
            $vCookie1['value']  = $vCuser;
            $vCookie1['expire'] = '600';
            $ci->input->set_cookie($vCookie1);
            
            //simpan ke cookie token/sesi   
            $vCookie2['name']   = 'ik_inv_ck_sesi';
            $vCookie2['value']   = $vCsesi;
            $vCookie2['expire']  = '600';
            $ci->input->set_cookie($vCookie2);
            }
            
            return $hasil;
        }

 } 

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I was going to ask the same thing.

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