From 764d2676dbe32c8c8f64d04b6051bb5e46397e24 Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Thu, 31 Aug 2017 19:24:04 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=B9=E8=BF=9Bsession=E7=B1=BB=E7=9A=84pref?=
 =?UTF-8?q?ix=E6=96=B9=E6=B3=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 library/think/Session.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/library/think/Session.php b/library/think/Session.php
index 5fcc413c..1d02518e 100644
--- a/library/think/Session.php
+++ b/library/think/Session.php
@@ -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']])) {