From 964f960264a59f7dd1e32c7bb03bdbd78fc8ec3f Mon Sep 17 00:00:00 2001
From: root <root@KikiChole.localdomain>
Date: Sun, 19 Jul 2026 01:00:52 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E5=B7=A5=E5=8D=95=E5=90=8D?=
 =?UTF-8?q?=E7=A7=B0=E7=BA=AF=E6=95=B0=E5=AD=97?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 application/common/service/SplitRedirectService.php        | 7 ++++---
 .../application/common/service/SplitRedirectService.php    | 7 ++++---
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/application/common/service/SplitRedirectService.php b/application/common/service/SplitRedirectService.php
index 86c3af3..09f9db5 100755
--- a/application/common/service/SplitRedirectService.php
+++ b/application/common/service/SplitRedirectService.php
@@ -195,7 +195,8 @@ class SplitRedirectService
 
         $keys = array_keys($groups);
         if (count($keys) === 1) {
-            return $keys[0];
+            // PHP 会把纯数字字符串键转成 int，需强转以匹配 ?string 返回类型
+            return (string) $keys[0];
         }
 
         $r = random_int(1, $total);
@@ -203,11 +204,11 @@ class SplitRedirectService
         foreach ($groups as $key => $rows) {
             $acc += count($rows);
             if ($r <= $acc) {
-                return $key;
+                return (string) $key;
             }
         }
 
-        return $keys[0];
+        return (string) $keys[0];
     }
 
     /**
diff --git a/patches/application/common/service/SplitRedirectService.php b/patches/application/common/service/SplitRedirectService.php
index 86c3af3..09f9db5 100755
--- a/patches/application/common/service/SplitRedirectService.php
+++ b/patches/application/common/service/SplitRedirectService.php
@@ -195,7 +195,8 @@ class SplitRedirectService
 
         $keys = array_keys($groups);
         if (count($keys) === 1) {
-            return $keys[0];
+            // PHP 会把纯数字字符串键转成 int，需强转以匹配 ?string 返回类型
+            return (string) $keys[0];
         }
 
         $r = random_int(1, $total);
@@ -203,11 +204,11 @@ class SplitRedirectService
         foreach ($groups as $key => $rows) {
             $acc += count($rows);
             if ($r <= $acc) {
-                return $key;
+                return (string) $key;
             }
         }
 
-        return $keys[0];
+        return (string) $keys[0];
     }
 
     /**