From 3802a1c9738e383014614c17d2d5c7d82ba4a66e Mon Sep 17 00:00:00 2001
From: Anonymous <anonymous@tor.com>
Date: Wed, 23 Oct 2019 00:09:50 +0800
Subject: [PATCH] update

---
 app/Http/Controllers/InviteController.php |  2 +-
 app/Utils/Helper.php                      | 27 +++++++++++++++++++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/app/Http/Controllers/InviteController.php b/app/Http/Controllers/InviteController.php
index ba13433a..c03b4190 100644
--- a/app/Http/Controllers/InviteController.php
+++ b/app/Http/Controllers/InviteController.php
@@ -17,7 +17,7 @@ class InviteController extends Controller
         }
         $inviteCode = new InviteCode();
         $inviteCode->user_id = $request->session()->get('id');
-        $inviteCode->code = Helper::guid();
+        $inviteCode->code = Helper::randomChar(8);
         return response([
             'data' => $inviteCode->save()
         ]);
diff --git a/app/Utils/Helper.php b/app/Utils/Helper.php
index 1cdf9a41..8040e44a 100755
--- a/app/Utils/Helper.php
+++ b/app/Utils/Helper.php
@@ -22,4 +22,31 @@ class Helper
         $result = json_decode($result, true);
         return $result['rates'][$to];
     }
+
+    public static function randomChar($len, $special=false){
+        $chars = array(
+            "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k",
+            "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v",
+            "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G",
+            "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
+            "S", "T", "U", "V", "W", "X", "Y", "Z", "0", "1", "2",
+            "3", "4", "5", "6", "7", "8", "9"
+        );
+    
+        if($special){
+            $chars = array_merge($chars, array(
+                "!", "@", "#", "$", "?", "|", "{", "/", ":", ";",
+                "%", "^", "&", "*", "(", ")", "-", "_", "[", "]",
+                "}", "<", ">", "~", "+", "=", ",", "."
+            ));
+        }
+    
+        $charsLen = count($chars) - 1;
+        shuffle($chars);
+        $str = '';
+        for($i=0; $i<$len; $i++){
+            $str .= $chars[mt_rand(0, $charsLen)];
+        }
+        return $str;
+    }
 }