密保卡入库
$this->load->model(admin/m_mibao);  $data = array();     //生成随机横坐标 $rand_str = $this->_rand_str(10);  $arr   = array(); for($k=0;$kstrlen($rand_str);$k++) {     for ($i = 1;$i $i++)     {                    $rand = $this->_rand_num(3);          //赋给所有code的容器         $arr[$rand_str{$k} . $i] =  $rand;     } }  $data[code]     = serialize($arr); //序列化后将信息入库 $data[letter]   = $rand_str;  //避免重复序列号 while (true) {         $data[card_num] = $this->_rand_num(20);         //判断序列号是否重复存在     if($this->m_mibao->has_card_num($data[card_num]) == 0)     {         break;     } }  $data[add_time] = time; $data[user_id]  = $uid;            echo $this->mibao->insert($data); 
密保卡图片生成
//就是算坐标        public function show($user_id) {     $this->load->model(admin/m_mibao);     $info = $this->m_mibao->get_by_uid($user_id);     if(emptyempty($info))     {         $this->msg(该用户无密保卡!,admin-index);     }          $codes = unserialize($info[code]);      //图片初始值          $bit = 3;  //密保卡位数          $height = 332;    //图片高度          $width =  626;    //图片宽度          $im = imagecreatetruecolor($width,$height);          $linecolor = imagecolorallocate($im, 229,229,229);          $fontcolor = imagecolorallocate($im, 0, 0, 0);          $top_rectangle_color = imagecolorallocate($im,241,254,237);          $top_letter_color = imagecolorallocate($im,54,126,76);          $left_rectangle_color = imagecolorallocate($im,243,247,255);          $left_num_color = imagecolorallocate($im,4,68,192);          $logo_str_color = imagecolorallocate($im,0,0,0);          imagefill($im,0,0,imagecolorallocate($im,255,255,255));  //图片背景色          $font    = ./public/baomi/fonts/simsun.ttc;  //字体          $font_en = ./public/baomi/fonts/consola.ttf; //英文字体          $font2   = ./public/baomi/fonts/simhei.ttf; //密保卡上方黑体               $dst = imagecreatefromjpeg(./public/baomi/120.jpg);                    imagecopymerge($im,$dst,120,15,0,0,193,55,100);          imageline($im,10,72,$width-10,72,$linecolor);          $ltext = 电子密保卡;          if(!imagettftext($im,10,0,340,47,$logo_str_color,$font2,$ltext)) {         exit(error);        }          //写入卡号          $b = 1000 . $info[card_num];          for($i=0;$i$i++){              $p.= substr($b,3*$i,4).  ;          }          $x = 40; $y = 95; //序列号位置          imagettftext($im,10,0,$x,$y,$color,$font,序列号);          imagettftext($im,11,0,$x+50,$y,$color,$font_en,$p);          //颜色框          imagefilledrectangle($im,10,106,$width-10,128,$top_rectangle_color);          imagefilledrectangle($im,10,129,65,$height-10,$left_rectangle_color);          //写入最上排英文字母及竖线          for($i=1;$i$i++){              $x = $i*55+35;      $y = 123;    $float_size = 11;   //字母位置参数                             imagettftext($im,$float_size,0,$x,$y,$top_letter_color,$font_en,$info[letter]{$i-1});//写入最上排英文字母          }          for($i=0;$i$i++){              $linex = $i*55+65;    $liney = 105;    $liney2 = $height-10;  //竖线位置参数              imageline($im,$linex,$liney,$linex,$liney2,$linecolor);//划入竖线          }                        //写入竖排数字及填入矩阵数据 划横线          for($j=0;$j$j++){              $jj=$j+1;              $x=35;  $y=($jj*24)+123; //左排数字及横线位置参数              imagettftext($im, $float_size, 0, $x, $y, $left_num_color, $font_en, $jj);//写入左排数字              for($i=1;$i$i++){                  $float_size2=11;  $x = $i*55+27;  $sy=$y;  //填入矩阵数据位置参数                 $s = $info[letter]{$i-1};            $s .= $j + 1;            imagettftext($im,$float_size2,0,$x,$sy,$fontcolor,$font_en,$codes[$s]);//写入矩阵数据              }     }          for($j=0;$j$j++){              $line_x=10; $line_x2=$width-10;$y=$j*24+105; //横线位置参数 y坐标数据同上              imageline($im,$line_x,$y,$line_x2,$y,$linecolor);//划入横线          }          //外框边线          imageline($im,10,10,$width-10,10,$linecolor);//横线          //imageline($im,10,$height-10,$width-10,$height-10,$linecolor);          imageline($im,10,10,10,$height-10,$linecolor);//竖线          imageline($im,$width-10,10,$width-10,$height-10,$linecolor);          //生成图片          ob_clean();     header(content-type: image/jpeg);     imagejpeg($im,null,100);     imagedestroy($im);       } 
密保卡验证
public function test1($uid) {      $this->load->model(admin/m_users);             $user = $this->m_users->sel($uid);      //post提交过来验证     if($this->is_post())     {         $codes = $this->m_mibao->get_codes_by_uid($uid);         $codes = unserialize($codes);          $is_true = true;         foreach($_session[mibao][keys] as $key)         {             if($codes[$key] != $_post[values][$key])             {                 $is_true = false;             }         }                  if($is_true)         {                        die(正确);         }         else          {                          die(错误);         }     }     else     {         //渲染视图         $info = $this->m_mibao->get_by_uid($uid);         $data = array();         $data[keys] = $this->m_mibao->get_rand_keys($info[letter]);         $_session[mibao][keys] = $data[keys];         $data[uid] = $uid;         $this->load->view(test1,$data);     }