diff --git a/application/controllers/cache.php b/application/controllers/cache.php
index 8a1b6a78..7daf5e38 100644
--- a/application/controllers/cache.php
+++ b/application/controllers/cache.php
@@ -1,202 +1,195 @@
 <?php
-if (!defined('BASEPATH'))
-    exit('No direct script access allowed');
-
-class Cache extends CI_Controller
-{
-    //缓存文件绝对路径
-    private $dir = '';
-    //存放缓存文件的数组
-    private $file = array();
-    //存放缓存文件夹的数组
-    private $path = array();
-    //缓存更新接口
-    private $cache_api = '';
-    //缓存更新参数
-    private $post_para = '';
-    //当前站点域名
-    private $current_domain = '';
-    //文件更新日期
-    private $file_time = array();
-
-    function __construct()
-    {
-        parent::__construct();
-        if (!$this->input->get('site_code')) {
-            $this->permission->is_admin();
-        }
-        $this->load->model('Area_model');
-        $this->load->model('InfoStructures_model');
-        $this->load->model('Information_model');
-        $this->site_code = $this->input->get('site_code') ? $this->input->get('site_code') : $this->config->item('site_code');
-    }
+if (! defined('BASEPATH')) {
+  exit('No direct script access allowed');
+}
 
-    /**
-     * 
-     * 公有函数：扫描已有缓存文件并更新。
-     * 
-     * 必要参数：
-     * @param String $site_code
-     * 
-     */
-    public function update()
-    {
-        $returnType = $this->input->get('type');
-        //设置缓存文件文件夹
-        $cache_config = $this->config->item('cache');
-        $current_cache_config = $cache_config[$this->site_code];
-        $this->dir = $current_cache_config['cache_path'];
-
-        //设置当前站点
-        $this->current_domain = $current_cache_config['site_url']; //$this->config->item('site_url');
-        //echo $this->config->item('site_url');
-        //设置缓存更新接口及POST参数
-        $this->cache_api = $current_cache_config['cache_api'];
-        $this->post_para = $current_cache_config['cache_api_para'];
-        //遍历缓存文件夹
-        $this->tree($this->dir, $this->file, $this->path, $this->file_time);
-        //print_r($this->file);
-        //print_r($this->path);
-        //print_r($this->file_time);
-        //die();
-        //按目录筛选结果
-        $this->filter($this->file, $this->path);
-
-        //整理需要传递到视图的数据
-        $data['file'] = $this->file;
-        $data['path'] = $this->path;
-        $data['file_time'] = $this->file_time;
-        $data['cache_api'] = $this->cache_api;
-        $data['post_para'] = $this->post_para;
-
-        if ($returnType === 'json') {
-            //print_r($cache_config[$this->site_code]);
-            //echo('json');
-            //print_r($data['file']);
-            echo (json_encode($data['file']));
-        } else {
-            //视图
-            $this->load->view('cache/update', $data);
-        }
+class Cache extends CI_Controller {
+  //缓存文件绝对路径
+  private $dir = '';
+  //存放缓存文件的数组
+  private $file = [];
+  //存放缓存文件夹的数组
+  private $path = [];
+  //缓存更新接口
+  private $cache_api = '';
+  //缓存更新参数
+  private $post_para = '';
+  //当前站点域名
+  private $current_domain = '';
+  //文件更新日期
+  private $file_time = [];
+
+  function __construct() {
+    parent::__construct();
+    if (! $this->input->get('site_code')) {
+      $this->permission->is_admin();
     }
-
-    /**
-     * 
-     * 公有函数：扫描已有缓存文件并更新。
-     * 
-     * 必要参数：
-     * @param String $site_code
-     * 
-     */
-    public function sitemap()
-    {
-        header("Content-type:text/xml");
-        //设置缓存文件文件夹
-        $cache_config = $this->config->item('cache');
-        $current_cache_config = $cache_config[$this->site_code];
-        $this->dir = $current_cache_config['cache_path'];
-
-        //设置当前站点
-        $this->current_domain = $this->config->item('site_url');
-        //设置缓存更新接口及POST参数
-        $this->cache_api = $current_cache_config['cache_api'];
-        $this->post_para = $current_cache_config['cache_api_para'];
-        //遍历缓存文件夹
-        $this->tree($this->dir, $this->file, $this->path, $this->file_time);
-        //按目录筛选结果
-        $this->filter($this->file, $this->path);
-
-        //整理需要传递到视图的数据
-        $data['file'] = $this->file;
-        $data['path'] = $this->path;
-        $data['file_time'] = $this->file_time;
-        $data['cache_api'] = $this->cache_api;
-        $data['post_para'] = $this->post_para;
-
-        //排序file数组
-        sort($data['file']);
-
-        //生成sitemap
-        $dom = new DomDocument('1.0', 'utf-8');
-        $urlset = $dom->createElement('urlset');
-        $urlset->setAttribute('xmlns', 'http://www.sitemaps.org/schemas/sitemap/0.9');
-        $dom->appendchild($urlset);
-        foreach ($data['file'] as $f) {
-            $url = $dom->createElement('url');
-            $loc = $dom->createElement('loc');
-            $text = $dom->createTextNode($f);
-            $loc->appendchild($text);
-            $url->appendchild($loc);
-            $urlset->appendchild($url);
-        }
-
-        echo ($dom->saveXML());
+    $this->load->model('Area_model');
+    $this->load->model('InfoStructures_model');
+    $this->load->model('Information_model');
+    $this->site_code = $this->input->get('site_code') ? $this->input->get('site_code') : $this->config->item('site_code');
+  }
+
+  /**
+   *
+   * 公有函数：扫描已有缓存文件并更新。
+   *
+   * 必要参数：
+   * @param String $site_code
+   *
+   */
+  public function update() {
+    $returnType = $this->input->get('type');
+    //设置缓存文件文件夹
+    $cache_config         = $this->config->item('cache');
+    $current_cache_config = $cache_config[$this->site_code];
+    $this->dir            = $current_cache_config['cache_path'];
+
+                                                               //设置当前站点
+    $this->current_domain = $current_cache_config['site_url']; //$this->config->item('site_url');
+                                                               //echo $this->config->item('site_url');
+                                                               //设置缓存更新接口及POST参数
+    $this->cache_api = $current_cache_config['cache_api'];
+    $this->post_para = $current_cache_config['cache_api_para'];
+    //遍历缓存文件夹
+    $this->tree($this->dir, $this->file, $this->path, $this->file_time);
+    //print_r($this->file);
+    //print_r($this->path);
+    //print_r($this->file_time);
+    //die();
+    //按目录筛选结果
+    $this->filter($this->file, $this->path);
+
+    //整理需要传递到视图的数据
+    $data['file']      = $this->file;
+    $data['path']      = $this->path;
+    $data['file_time'] = $this->file_time;
+    $data['cache_api'] = $this->cache_api;
+    $data['post_para'] = $this->post_para;
+
+    if ($returnType === 'json') {
+      //print_r($cache_config[$this->site_code]);
+      //echo('json');
+      //print_r($data['file']);
+      echo(json_encode($data['file']));
+    } else {
+      //视图
+      $this->load->view('cache/update', $data);
     }
-
-
-    /**
-     * 
-     * 私有函数：递归遍历缓存文件夹，将目录存放到$path，文件存放到$file。
-     * 
-     * 必要参数：
-     * @param String $dir - 需要遍历的目录
-     * @param Array $file - 存放文件结果的数组引用
-     * @param Array $path - 存放路径结果的数组引用
-     * @param Array $file_time - 存放文件更新日期的数组引用
-     * 
-     */
-    private function tree($dir, &$file, &$path, &$file_time)
-    {
-        $mydir = dir($dir);
-        while ($f = $mydir->read()) {
-            if (is_dir("$dir/$f") && $f != "." && $f != ".." && (strpos($dir, '/cn/') === false) && (strpos($dir, '/amp/') === false) && (strpos($dir, '/js/') === false)) {
-                $path[] = "$dir/$f";
-                $this->tree("$dir/$f", $file, $path, $file_time);
-            } else {
-                if ($f != '.' && $f != '..' && (strpos($f, '/cn/') === false) && (strpos($f, '/amp/') === false) && (strpos($f, '.pdf') === false) && (strpos($f, '.mobile.htm') === false) && (strpos($f, '/js/') === false) && (strpos($f, '.amp') === false)) {
-                    $file_temp = str_replace('/index.htm###', '', $f . '###');
-                    $file_temp = str_replace('###', '', $file_temp);
-                    $path_temp = str_replace($this->dir, '', $dir);
-                    $url_temp = $this->current_domain . $path_temp . '/' . $file_temp;
-                    $url_temp = str_replace('/index.htm', '/', $url_temp);
-                    $file_time[$url_temp] = date("F d Y H:i:s", filemtime("$dir/$f"));
-
-                    $encode = mb_detect_encoding($url_temp, array('ASCII', 'GBK', 'ISO-8859-1', 'UTF-8'));
-                    $_url_temp = mb_convert_encoding($url_temp, 'UTF8', $encode);
-
-                    $file[] = $_url_temp;
-                }
-            }
-        }
-        $mydir->close();
+  }
+
+  /**
+   *
+   * 公有函数：扫描已有缓存文件并更新。
+   *
+   * 必要参数：
+   * @param String $site_code
+   *
+   */
+  public function sitemap() {
+    header("Content-type:text/xml");
+    //设置缓存文件文件夹
+    $cache_config         = $this->config->item('cache');
+    $current_cache_config = $cache_config[$this->site_code];
+    $this->dir            = $current_cache_config['cache_path'];
+
+    //设置当前站点
+    $this->current_domain = $this->config->item('site_url');
+    //设置缓存更新接口及POST参数
+    $this->cache_api = $current_cache_config['cache_api'];
+    $this->post_para = $current_cache_config['cache_api_para'];
+    //遍历缓存文件夹
+    $this->tree($this->dir, $this->file, $this->path, $this->file_time);
+    //按目录筛选结果
+    $this->filter($this->file, $this->path);
+
+    //整理需要传递到视图的数据
+    $data['file']      = $this->file;
+    $data['path']      = $this->path;
+    $data['file_time'] = $this->file_time;
+    $data['cache_api'] = $this->cache_api;
+    $data['post_para'] = $this->post_para;
+
+    //排序file数组
+    sort($data['file']);
+
+    //生成sitemap
+    $dom    = new DomDocument('1.0', 'utf-8');
+    $urlset = $dom->createElement('urlset');
+    $urlset->setAttribute('xmlns', 'http://www.sitemaps.org/schemas/sitemap/0.9');
+    $dom->appendchild($urlset);
+    foreach ($data['file'] as $f) {
+      $url  = $dom->createElement('url');
+      $loc  = $dom->createElement('loc');
+      $text = $dom->createTextNode($f);
+      $loc->appendchild($text);
+      $url->appendchild($loc);
+      $urlset->appendchild($url);
     }
 
-
-    /**
-     * 
-     * 私有函数：筛选目录和文件。
-     * 
-     * 必要参数：
-     * @param Array $file - 存放文件结果的数组引用
-     * @param Array $path - 存放路径结果的数组引用
-     * 
-     * 可选参数：POST参数 - $_POST['p']
-     * 
-     */
-    private function filter(&$file, &$path)
-    {
-        if (isset($_POST['p']) && !empty($_POST['p'])) {
-            //删选文件
-            foreach ($file as &$f) {
-                (stripos($f, $_POST['p']) !== false) or $f = false;
-            }
-            $file = array_filter($file);
-            //删选目录
-            foreach ($path as &$p) {
-                (stripos($p, $_POST['p']) !== false) or $p = false;
-            }
-            $path = array_filter($path);
+    echo($dom->saveXML());
+  }
+
+  /**
+   *
+   * 私有函数：递归遍历缓存文件夹，将目录存放到$path，文件存放到$file。
+   *
+   * 必要参数：
+   * @param String $dir - 需要遍历的目录
+   * @param Array $file - 存放文件结果的数组引用
+   * @param Array $path - 存放路径结果的数组引用
+   * @param Array $file_time - 存放文件更新日期的数组引用
+   *
+   */
+  private function tree($dir, &$file, &$path, &$file_time) {
+    $mydir = dir($dir);
+    while ($f = $mydir->read()) {
+      if (is_dir("$dir/$f") && $f != "." && $f != ".." && (strpos($dir, '/cn/') === false) && (strpos($dir, '/amp/') === false) && (strpos($dir, '/js/') === false) && (strpos($dir, 'stfolder') === false)) {
+        $path[] = "$dir/$f";
+        $this->tree("$dir/$f", $file, $path, $file_time);
+      } else {
+        if ($f != '.' && $f != '..' && (strpos($f, '/cn/') === false) && (strpos($f, '/amp/') === false) && (strpos($f, '.pdf') === false) && (strpos($f, '.mobile.htm') === false) && (strpos($f, '/js/') === false) && (strpos($f, '.amp') === false)) {
+          $file_temp            = str_replace('/index.htm###', '', $f . '###');
+          $file_temp            = str_replace('###', '', $file_temp);
+          $path_temp            = str_replace($this->dir, '', $dir);
+          $url_temp             = $this->current_domain . $path_temp . '/' . $file_temp;
+          $url_temp             = str_replace('/index.htm', '/', $url_temp);
+          $file_time[$url_temp] = date("F d Y H:i:s", filemtime("$dir/$f"));
+
+          $encode    = mb_detect_encoding($url_temp, ['ASCII', 'GBK', 'ISO-8859-1', 'UTF-8']);
+          $_url_temp = mb_convert_encoding($url_temp, 'UTF8', $encode);
+
+          $file[] = $_url_temp;
         }
+      }
+    }
+    $mydir->close();
+  }
+
+  /**
+   *
+   * 私有函数：筛选目录和文件。
+   *
+   * 必要参数：
+   * @param Array $file - 存放文件结果的数组引用
+   * @param Array $path - 存放路径结果的数组引用
+   *
+   * 可选参数：POST参数 - $_POST['p']
+   *
+   */
+  private function filter(&$file, &$path) {
+    if (isset($_POST['p']) && ! empty($_POST['p'])) {
+      //删选文件
+      foreach ($file as &$f) {
+        (stripos($f, $_POST['p']) !== false) or $f = false;
+      }
+      $file = array_filter($file);
+      //删选目录
+      foreach ($path as &$p) {
+        (stripos($p, $_POST['p']) !== false) or $p = false;
+      }
+      $path = array_filter($path);
     }
+  }
 }
 //end of Cache