cache类的init方法增加参数 File缓存驱动去掉不再支持的path_level参数

library/think/Cache.php

@@ -58,13 +58,14 @@ class Cache
     /**
      * 自动初始化缓存
      * @access public
+     * @param array         $options  配置数组
      * @return void
      */
-    public static function init()
+    public static function init(array $options = [])
     {
         if (is_null(self::$handler)) {
             // 自动初始化缓存
-            self::connect(Config::get('cache'));
+            self::connect($options ?: Config::get('cache'));
         }
     }
 

library/think/cache/driver/File.php

@@ -17,11 +17,9 @@ namespace think\cache\driver;
  */
 class File
 {
-
     protected $options = [
         'expire'        => 0,
         'cache_subdir'  => false,
-        'path_level'    => 1,
         'prefix'        => '',
         'path'          => CACHE_PATH,
         'data_compress' => false,