PHP _at函数代码示例

 /**
  *    执行
  *
  *    @author    Garbin
  *    @param    none
  *    @return    void
  */
 function execute()
 {
     //此处的锁定机制可能存在冲突问题
     /* 被锁定 */
     if ($this->is_lock()) {
         return;
     }
     /* 在运行结束前锁定 */
     _at('set_time_limit', 1800);
     //半个小时
     _at('ignore_user_abort', true);
     //忽略用户退出
     $this->lock();
     $this->_init_tasks();
     /* 获取到期的任务列表 */
     $due_tasks = $this->get_due_tasks();
     /* 没有到期的任务 */
     if (empty($due_tasks)) {
         $this->unlock();
         return;
     }
     /* 执行任务 */
     $this->run_task($due_tasks);
     /* 更新任务列表 */
     $this->update_tasks($due_tasks);
     /* 解锁 */
     $this->unlock();
 }

 /**
  * 生成XML文档
  *@access    public
  *@param     string  $file_name  如果提供了文件名则生成文件，否则返回字符串.
  *@return [void|string]
  */
 function build($file_name = null)
 {
     $map = $this->header . "\n";
     foreach ($this->items as $item) {
         $item->loc = htmlentities($item->loc, ENT_QUOTES);
         $map .= "\t\t<url>\n\t\t\t<loc>{$item->loc}</loc>\n";
         // lastmod
         if (!empty($item->lastmod)) {
             $map .= "\t\t\t<lastmod>{$item->lastmod}</lastmod>\n";
         }
         // changefreq
         if (!empty($item->changefreq)) {
             $map .= "\t\t\t<changefreq>{$item->changefreq}</changefreq>\n";
         }
         // priority
         if (!empty($item->priority)) {
             $map .= "\t\t\t<priority>{$item->priority}</priority>\n";
         }
         $map .= "\t\t</url>\n\n";
     }
     $map .= $this->footer . "\n";
     if (!is_null($file_name)) {
         return _at('file_put_contents', $file_name, $map, LOCK_EX);
     } else {
         return $map;
     }
 }

 function DbApp()
 {
     parent::BackendApp();
     /* 设置最长执行时间为5分钟 */
     _at('set_time_limit', 300);
     _at('ini_set', 'memory_limit', '64M');
     $this->db =& db();
     $this->backup_path = ROOT_PATH . '/' . 'data/' . $this->backup_dir . '/';
 }

 /**
  *    清理垃圾文件
  *
  *    @author    Garbin
  *    @return    void
  */
 function clean_file()
 {
     $continue = isset($_GET['continue']);
     $isolcated_file = $this->_get_isolated_file();
     if (empty($isolcated_file)) {
         $this->json_error('no_isocated_file');
         return;
     }
     $file_count = count($isolcated_file);
     if (!$continue) {
         $this->json_result('', sprintf(Lang::get('isolcated_file_count'), $file_count));
         return;
     } else {
         foreach ($isolcated_file as $f) {
             _at('unlink', ROOT_PATH . '/' . $f);
         }
         $this->json_result('', sprintf('clean_file_successed', $file_count));
     }
 }

 function creathtml()
 {
     $this->assign('index', 1);
     // 标识当前页面是首页，用于设置导航状态
     /* 热门搜素 */
     $this->assign('hot_keywords', $this->_get_hot_keywords());
     $this->assign('page_title', Conf::get('site_title'));
     $this->assign('page_description', Conf::get('site_description'));
     $this->assign('page_keywords', Conf::get('site_keywords'));
     if (file_exists(ROOT_PATH . "/index.html")) {
         _at(unlink, ROOT_PATH . "/index.html");
         _at(unlink, ROOT_PATH . "/mindex.html");
     }
     $data = $this->outhtml('index.html');
     $file = 'index.html';
     $mdata = $this->outhtml('mindex.html');
     $mfile = 'mindex.html';
     $filesize = file_put_contents($file, $data);
     $mfilesize = file_put_contents($mfile, $mdata);
     @chmod($file, 0777);
     @chmod($mfile, 0777);
     $this->json_result("", "生成首页静态文件成功");
 }

 function get_prop()
 {
     //参数数组
     $paramArr = array('app_key' => $this->_appKey, 'method' => 'taobao.itempropvalues.get', 'format' => 'json', 'v' => '2.0', 'timestamp' => date('Y-m-d H:i:s'), 'fields' => $this->_fields, 'pvs' => $this->_pvs, 'cid' => $this->_cid);
     //生成签名
     $sign = $this->_createSign($paramArr, $appSecret);
     //组织参数
     $strParam = $this->_createStrParam($paramArr);
     $strParam .= 'sign=' . $sign;
     //访问服务
     $url = 'http://gw.api.taobao.com/router/rest?' . $strParam;
     //vdump('ok',file_get_contents($url));
     $result = _at('file_get_contents', $url);
     if (!$result) {
         $this->_error('api_data_fail');
         return false;
     }
     $result = $this->_getJsonData($result);
     if (isset($result['msg'])) {
         $this->_error($result['msg']);
         return false;
     }
     return $result['prop_value']['prop_value'];
 }

 /**
  *    删除头像
  *
  *    @author    Garbin
  *    @param     int $user_id
  *    @return    bool
  */
 function drop_avatar($user_id)
 {
     $model_member =& m('member');
     $info = $model_member->get($user_id);
     if ($info['portrait']) {
         return _at('unlink', ROOT_PATH . '/' . $info['portrait']);
     }
     return true;
 }

 function delete($key)
 {
     $cache_file = $this->_get_cache_path($key);
     return _at(unlink, $cache_file);
 }

 function remote_image()
 {
     import('image.func');
     import('uploader.lib');
     $uploader = new Uploader();
     $uploader->allowed_type(IMAGE_FILE_TYPE);
     $uploader->allowed_size(SIZE_GOODS_IMAGE);
     // 2M
     $upload_mod =& m('uploadedfile');
     /* 取得剩余空间（单位：字节），false表示不限制 */
     $store_mod =& m('store');
     $settings = $store_mod->get_settings($this->store_id);
     $remain = $settings['space_limit'] > 0 ? $settings['space_limit'] * 1024 * 1024 - $upload_mod->get_file_size($this->store_id) : false;
     $uploader->root_dir(ROOT_PATH);
     $dirname = '';
     $remote_url = trim($_POST['remote_url']);
     if (!empty($remote_url)) {
         if (preg_match("/^(http:\\/\\/){1,1}.+(gif|png|jpeg|jpg){1,1}\$/i", $remote_url)) {
             $result = $this->url_exist($remote_url, 2097152, $remain);
             if ($result === 1) {
                 $this->view_remote();
                 $res = Lang::get("url_invalid");
                 echo "<script type='text/javascript'>alert('{$res}');</script>";
                 return false;
             } elseif ($result === 2) {
                 $this->view_remote();
                 $res = Lang::get("not_allowed_size");
                 echo "<script type='text/javascript'>alert('{$res}');</script>";
                 return false;
             } elseif ($result === 3) {
                 $this->view_remote();
                 $res = Lang::get("space_limit_arrived");
                 echo "<script type='text/javascript'>alert('{$res}');</script>";
                 return false;
             }
             $img_url = _at('file_get_contents', $remote_url);
             $dirname = '';
             if ($this->belong == BELONG_GOODS) {
                 $dirname = 'data/files/store_' . $this->visitor->get('manage_store') . '/goods_' . time() % 200;
             } elseif ($this->belong == BELONG_STORE) {
                 $dirname = 'data/files/store_' . $this->visitor->get('manage_store') . '/other';
             } elseif ($this->belong == BELONG_ARTICLE) {
                 $dirname = 'data/files/mall/store_' . $this->visitor->get('manage_store') . '/article';
             }
             $filename = $uploader->random_filename();
             $new_url = $dirname . '/' . $filename . '.' . substr($remote_url, strrpos($remote_url, '.') + 1);
             ecm_mkdir(ROOT_PATH . '/' . $dirname);
             $fp = _at('fopen', ROOT_PATH . '/' . $new_url, "w");
             _at('fwrite', $fp, $img_url);
             _at('fclose', $fp);
             if (!file_exists(ROOT_PATH . '/' . $new_url)) {
                 $this->view_remote();
                 $res = Lang::get("system_error");
                 echo "<script type='text/javascript'>alert('{$res}');</script>";
                 return false;
             }
             /* 处理文件入库 */
             $data = array('store_id' => $this->store_id, 'file_type' => $this->_return_mimetype(ROOT_PATH . '/' . $new_url), 'file_size' => filesize(ROOT_PATH . '/' . $new_url), 'file_name' => substr($remote_url, strrpos($remote_url, '/') + 1), 'file_path' => $new_url, 'belong' => $this->belong, 'item_id' => $this->id, 'add_time' => gmtime());
             $file_id = $upload_mod->add($data);
             if (!$file_id) {
                 $this->_error($uf_mod->get_error());
                 return false;
             }
             if ($this->instance == 'goods_image') {
                 /* 生成缩略图 */
                 $thumbnail = dirname($new_url) . '/small_' . basename($new_url);
                 make_thumb(ROOT_PATH . '/' . $new_url, ROOT_PATH . '/' . $thumbnail, THUMB_WIDTH, THUMB_HEIGHT, THUMB_QUALITY);
                 /* 更新商品相册 */
                 $mod_goods_image =& m('goodsimage');
                 $goods_image = array('goods_id' => $this->id, 'image_url' => $new_url, 'thumbnail' => $thumbnail, 'sort_order' => 255, 'file_id' => $file_id);
                 if (!$mod_goods_image->add($goods_image)) {
                     $this->_error($this->mod_goods_imaged->get_error());
                     return false;
                 }
                 $data['thumbnail'] = $thumbnail;
             }
             $data['instance'] = $this->instance;
             $data['file_id'] = $file_id;
             $res = "{";
             foreach ($data as $key => $val) {
                 $res .= "\"{$key}\":\"{$val}\",";
             }
             $res = substr($res, 0, strrpos($res, ','));
             $res .= '}';
             $this->view_remote();
             echo "<script type='text/javascript'>window.parent.add_uploadedfile({$res});</script>";
         } else {
             $res = Lang::get('url_invalid');
             $this->view_remote();
             echo "<script type='text/javascript'>alert('{$res}');</script>";
             return false;
         }
     } else {
         $res = Lang::get('remote_empty');
         $this->view_remote();
         echo "<script type='text/javascript'>alert('{$res}');</script>";
         return false;
     }
 }

 /**
  * 删除商品相关数据：包括商品图片、商品缩略图，要在删除商品之前调用
  *
  * @param   string  $goods_ids  商品id，用逗号隔开
  */
 function drop_data($goods_ids)
 {
     $image_mod =& m('goodsimage');
     $images = $image_mod->find(array('conditions' => 'goods_id' . db_create_in($goods_ids), 'fields' => 'image_url, thumbnail'));
     foreach ($images as $image) {
         if (!empty($image['image_url']) && trim($image['image_url']) && substr($image['image_url'], 0, 4) != 'http' && file_exists(ROOT_PATH . '/' . $image['image_url'])) {
             _at(unlink, ROOT_PATH . '/' . $image['image_url']);
         }
         if (!empty($image['thumbnail']) && trim($image['thumbnail']) && substr($image['thumbnail'], 0, 4) != 'http' && file_exists(ROOT_PATH . '/' . $image['thumbnail'])) {
             _at(unlink, ROOT_PATH . '/' . $image['thumbnail']);
         }
     }
 }

 function edit()
 {
     $id = empty($_GET['id']) ? 0 : intval($_GET['id']);
     if (!IS_POST) {
         /* 是否存在 */
         $gcategory = $this->_gcategory_mod->get_info($id);
         if (!$gcategory) {
             $this->show_warning('gcategory_empty');
             return;
         }
         $this->assign('gcategory', $gcategory);
         /* 导入jQuery的表单验证插件 */
         $this->import_resource(array('script' => 'jquery.plugins/jquery.validate.js'));
         $this->assign('parents', $this->_get_options($id));
         $this->display('gcategory.form.html');
     } else {
         $data = array('cate_name' => $_POST['cate_name'], 'parent_id' => $_POST['parent_id'], 'sort_order' => $_POST['sort_order'], 'if_show' => $_POST['if_show']);
         /* 检查名称是否已存在 */
         if (!$this->_gcategory_mod->unique(trim($data['cate_name']), $data['parent_id'], $id)) {
             $this->show_warning('name_exist');
             return;
         }
         /* 检查级数 */
         $depth = $this->_gcategory_mod->get_depth($id);
         $ancestor = $this->_gcategory_mod->get_ancestor($data['parent_id']);
         if ($depth + count($ancestor) > MAX_LAYER) {
             $this->show_warning('max_layer_error');
             return;
         }
         /* 保存 */
         $old_data = $this->_gcategory_mod->get_info($id);
         // 保存前的数据
         $rows = $this->_gcategory_mod->edit($id, $data);
         if ($this->_gcategory_mod->has_error()) {
             $this->show_warning($this->_gcategory_mod->get_error());
             return;
         }
         /* 如果改变了上级分类，更新商品表中相应记录的cate_id_1到cate_id_4 */
         if ($old_data['parent_id'] != $data['parent_id']) {
             // 执行时间可能比较长，所以不限制了
             _at(set_time_limit, 0);
             // 清除商城商品分类缓存
             $cache_server =& cache_server();
             $cache_server->delete('goods_category_0');
             // 取得当前分类的所有子孙分类（包括自身）
             $cids = $this->_gcategory_mod->get_descendant_ids($id, true);
             // 找出这些分类中有商品的分类
             $mod_goods =& m('goods');
             $mod_gcate =& $this->_gcategory_mod;
             $sql = "SELECT DISTINCT cate_id FROM {$mod_goods->table} WHERE cate_id " . db_create_in($cids);
             $cate_ids = $mod_goods->getCol($sql);
             // 循环更新每个分类的cate_id_1到cate_id_4
             foreach ($cate_ids as $cate_id) {
                 $cate_id_n = array(0, 0, 0, 0);
                 $ancestor = $mod_gcate->get_ancestor($cate_id, true);
                 for ($i = 0; $i < 4; $i++) {
                     isset($ancestor[$i]) && ($cate_id_n[$i] = $ancestor[$i]['cate_id']);
                 }
                 $sql = "UPDATE {$mod_goods->table} " . "SET cate_id_1 = '{$cate_id_n[0]}', cate_id_2 = '{$cate_id_n[1]}', cate_id_3 = '{$cate_id_n[2]}', cate_id_4 = '{$cate_id_n[3]}' " . "WHERE cate_id = '{$cate_id}'";
                 $mod_goods->db->query($sql);
             }
         }
         $this->show_message('edit_ok', 'back_list', 'index.php?app=gcategory', 'edit_again', 'index.php?app=gcategory&amp;act=edit&amp;id=' . $id);
     }
 }

 /**
  *    解锁
  *
  *    @author    Garbin
  *    @return    void
  */
 function unlock()
 {
     _at('unlink', $this->_config['lock_file']);
     //file_put_contents($this->_config['lock_file'], 0, LOCK_EX);
 }