更新tp5内核

core/library/think/Session.php

@@ -2,7 +2,7 @@
 // +----------------------------------------------------------------------
 // | ThinkPHP [ WE CAN DO IT JUST THINK ]
 // +----------------------------------------------------------------------
-// | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
+// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
 // +----------------------------------------------------------------------
 // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
 // +----------------------------------------------------------------------
@@ -25,6 +25,7 @@ class Session
      */
     public static function prefix($prefix = '')
     {
+        empty(self::$init) && self::boot();
         if (empty($prefix) && null !== $prefix) {
             return self::$prefix;
         } else {
@@ -56,7 +57,7 @@ class Session
             $isDoStart = true;
         }
 
-        if (isset($config['prefix']) && (self::$prefix === '' || self::$prefix === null)) {
+        if (isset($config['prefix']) && ('' === self::$prefix || null === self::$prefix)) {
             self::$prefix = $config['prefix'];
         }
         if (isset($config['var_session_id']) && isset($_REQUEST[$config['var_session_id']])) {
@@ -347,7 +348,7 @@ class Session
      * @param bool $delete 是否删除关联会话文件
      * @return void
      */
-    private static function regenerate($delete = false)
+    public static function regenerate($delete = false)
     {
         session_regenerate_id($delete);
     }