From 7ccf303cf6b6a4999e24a63a440edc9aa2529363 Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Wed, 27 Dec 2017 21:51:11 +0800
Subject: [PATCH] =?UTF-8?q?save=E6=96=B9=E6=B3=95=E6=94=B9=E8=BF=9B?=
 =?UTF-8?q?=E5=A4=8D=E5=90=88=E4=B8=BB=E9=94=AE=E7=9A=84=E6=94=AF=E6=8C=81?=
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---
 library/think/Model.php | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/library/think/Model.php b/library/think/Model.php
index 99105caa..391f78b6 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -1070,12 +1070,17 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                 }
             }
 
-            if (is_string($pk) && isset($data[$pk])) {
-                if (!isset($where[$pk])) {
-                    unset($where);
-                    $where[$pk] = $data[$pk];
+            $array = [];
+
+            foreach ((array) $pk as $key) {
+                if (isset($data[$key])) {
+                    $array[] = [$key, '=', $data[$key]];
+                    unset($data[$key]);
                 }
-                unset($data[$pk]);
+            }
+
+            if (!empty($array)) {
+                $where = $array;
             }
 
             // 检测字段