Update PHP requirement

README.md

@@ -48,8 +48,10 @@ Blessing Skin 对您的服务器有一定的要求。_在大多数情况下，
     - Mbstring
     - Tokenizer
     - GD
-
-如果你使用的是 PHP 7.2，请先阅读 [Wiki - 在 PHP 7.2 上运行](https://github.com/printempw/blessing-skin-server/wiki/%E5%9C%A8-PHP-7.2-%E4%B8%8A%E8%BF%90%E8%A1%8C)。
+    - XML
+    - Ctype
+    - JSON
+    - fileinfo
 
 快速使用
 -----------

README_EN.md

@@ -46,9 +46,11 @@ Blessing Skin has only a few system requirements. _In most cases, these PHP exte
 - PDO PHP Extension
 - Mbstring PHP Extension
 - Tokenizer PHP Extension
-- GD PHP Extension (for generating CAPTCHA)
-
-If you are using PHP 7.2, you should also apply this [patch](https://github.com/printempw/blessing-skin-server/wiki/%E5%9C%A8-PHP-7.2-%E4%B8%8A%E8%BF%90%E8%A1%8C) after your installation. Just extract the `vendor` folder from the patch, cover the stock `vendor` with that and you are done.
+- GD PHP Extension
+- XML PHP Extension
+- Ctype PHP Extension
+- JSON PHP Extension
+- fileinfo PHP Extension
 
 Quick Install
 -----------

app/Http/Controllers/SkinlibController.php

@@ -321,12 +321,7 @@ class SkinlibController extends Controller
             'public' => 'required'
         ]);
 
-        if (extension_loaded('fileinfo')) {
-            $mime = $request->file('file')->getMimeType();
-        } else {
-            $mime = $_FILES['file']['type'];
-        }
-
+        $mime = $request->file('file')->getMimeType();
         if ($mime != "image/png" && $mime != "image/x-png") {
             return json(trans('skinlib.upload.type-error'), 1);
         }