From c85ca31718cd9941d623c02268cb91164408cebe Mon Sep 17 00:00:00 2001
From: xboard <xboard@xboard.one>
Date: Fri, 8 Dec 2023 20:16:24 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E5=A2=9E=E5=8A=A0=E8=AE=A2=E9=98=85?=
 =?UTF-8?q?=E5=9C=B0=E5=9D=80=E6=94=AF=E6=8C=81[*-*]=E8=A1=A8=E8=BE=BE?=
 =?UTF-8?q?=E5=BC=8F?=
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/Utils/Helper.php | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/app/Utils/Helper.php b/app/Utils/Helper.php
index 028d0b0..3b3921f 100644
--- a/app/Utils/Helper.php
+++ b/app/Utils/Helper.php
@@ -111,7 +111,8 @@ class Helper
     public static function getSubscribeUrl($path)
     {
         $subscribeUrls = explode(',', admin_setting('subscribe_url'));
-        $subscribeUrl = $subscribeUrls[rand(0, count($subscribeUrls) - 1)];
+        $subscribeUrl = $subscribeUrls[array_rand($subscribeUrls)];
+        $subscribeUrl = self::replaceRandomNumber($subscribeUrl);
         if ($subscribeUrl) return $subscribeUrl . $path;
         return url($path);
     }
@@ -126,4 +127,27 @@ class Helper
         $encoded = base64_encode($data);
         return str_replace(['+', '/', '='], ['-', '_', ''], $encoded);
     }
+
+    /**
+     * 替换字符串中的 [num1-num2] 格式为介于 num1 和 num2 之间的随机数字
+     *
+     * @param string $input 用户输入的字符串
+     * @return string 替换后的字符串
+     */
+    public static function replaceRandomNumber($input) {
+        // 匹配 [1-4999] 格式的正则表达式
+        $pattern = '/\[(\d+)-(\d+)\]/';
+    
+        // 使用 preg_replace_callback 替换匹配到的内容
+        $result = preg_replace_callback($pattern, function ($matches) {
+            // 提取最小和最大值
+            $min = intval($matches[1]);
+            $max = intval($matches[2]);
+            // 生成随机数
+            $randomNumber = rand($min, $max);
+            return $randomNumber;
+        }, $input);
+    
+        return $result;
+    }
 }