diff --git a/app/Article.php b/app/Article.php
index 4a0c5eaaa..7489755ce 100644
--- a/app/Article.php
+++ b/app/Article.php
@@ -6,6 +6,7 @@
 use App\Tools\Markdowner;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\SoftDeletes;
+use Illuminate\Support\Str;
 
 class Article extends Model
 {
@@ -124,7 +125,7 @@ public function setTitleAttribute($value)
         $this->attributes['title'] = $value;
 
         if (!config('services.youdao.appKey') || !config('services.youdao.appSecret')) {
-            $this->setUniqueSlug($value, str_random(5));
+            $this->setUniqueSlug($value, Str::random(5));
         } else {
             $this->setUniqueSlug(translug($value), '');
         }
@@ -138,7 +139,7 @@ public function setTitleAttribute($value)
      */
     public function setUniqueSlug($value, $extra)
     {
-        $slug = str_slug($value.'-'.$extra);
+        $slug = Str::slug($value.'-'.$extra);
 
         if (static::whereSlug($slug)->exists()) {
             $this->setUniqueSlug($slug, (int) $extra + 1);
diff --git a/app/Http/Controllers/Api/UploadController.php b/app/Http/Controllers/Api/UploadController.php
index ea2f3e2e1..657cb83d8 100644
--- a/app/Http/Controllers/Api/UploadController.php
+++ b/app/Http/Controllers/Api/UploadController.php
@@ -4,6 +4,7 @@
 
 use Illuminate\Http\Request;
 use App\Http\Requests\ImageRequest;
+use Illuminate\Support\Str;
 
 class UploadController extends ApiController
 {
@@ -45,7 +46,7 @@ public function uploadForManager(Request $request)
                     ? $request->get('name').'.'.explode('/', $file->getClientMimeType())[1]
                     : $file->getClientOriginalName();
 
-        $path = str_finish($request->get('folder'), '/');
+        $path = Str::finish($request->get('folder'), '/');
 
         if ($this->manager->checkFile($path.$fileName)) {
             return $this->response->withBadRequest('This File exists.');
diff --git a/app/Http/Controllers/Api/UserController.php b/app/Http/Controllers/Api/UserController.php
index efcf95ea9..f2b8771a8 100644
--- a/app/Http/Controllers/Api/UserController.php
+++ b/app/Http/Controllers/Api/UserController.php
@@ -4,6 +4,7 @@
 
 use App\Scopes\StatusScope;
 use App\User;
+use Illuminate\Support\Str;
 use Image;
 use Illuminate\Http\Request;
 use App\Http\Requests\UserRequest;
@@ -61,7 +62,7 @@ public function store(UserRequest $request)
     {
         $data = array_merge($request->all(), [
             'password' => bcrypt($request->get('password')),
-            'confirm_code' => str_random(64),
+            'confirm_code' => Str::random(64),
         ]);
 
         \DB::transaction(function () use ($request, $data) {
diff --git a/app/Support/Transform.php b/app/Support/Transform.php
index 8822eba2e..1cf0e3ee0 100644
--- a/app/Support/Transform.php
+++ b/app/Support/Transform.php
@@ -2,6 +2,7 @@
 
 namespace App\Support;
 
+use Illuminate\Support\Arr;
 use League\Fractal\Manager;
 use App\Transformers\EmptyTransformer;
 use League\Fractal\TransformerAbstract;
@@ -42,8 +43,8 @@ public function __construct(Manager $fractal)
      *
      * @param $data
      * @param TransformerAbstract|null $transformer
-     *
      * @return array
+     * @throws \Exception
      */
     public function collection($data, TransformerAbstract $transformer = null)
     {
@@ -63,8 +64,8 @@ public function collection($data, TransformerAbstract $transformer = null)
      *
      * @param $data
      * @param TransformerAbstract|null $transformer
-     *
      * @return array
+     * @throws \Exception
      */
     public function item($data, TransformerAbstract $transformer = null)
     {
@@ -127,7 +128,7 @@ protected function hasDefaultTransformer($className)
     protected function getClassName($object)
     {
         if ($object instanceof LengthAwarePaginator || $object instanceof Collection) {
-            return get_class(array_first($object));
+            return get_class(Arr::first($object));
         }
 
         if (!is_string($object) && !is_object($object)) {