裁剪头像

app/Handlers/ImageUploadHandler.php

@@ -2,14 +2,14 @@
 
 namespace App\Handlers;
 
-use  Illuminate\Support\Str;
+use Intervention\Image\Facades\Image;
+use Illuminate\Support\Str;
 
 class ImageUploadHandler
 {
-    // 只允许以下后缀名的图片文件上传
     protected $allowed_ext = ["png", "jpg", "gif", 'jpeg'];
 
-    public function save($file, $folder, $file_prefix)
+    public function save($file, $folder, $file_prefix, $max_width = false)
     {
         // 构建存储的文件夹规则，值如：uploads/images/avatars/201709/21/
         // 文件夹切割能让查找效率更高。
@@ -34,8 +34,34 @@ public function save($file, $folder, $file_prefix)
         // 将图片移动到我们的目标存储路径中
         $file->move($upload_path, $filename);
 
+        // 如果限制了图片宽度，就进行裁剪
+        if ($max_width && $extension != 'gif') {
+
+            // 此类中封装的函数，用于裁剪图片
+            $this->reduceSize($upload_path . '/' . $filename, $max_width);
+        }
+
         return [
             'path' => config('app.url') . "/$folder_name/$filename"
         ];
     }
+
+    public function reduceSize($file_path, $max_width)
+    {
+        // 先实例化，传参是文件的磁盘物理路径
+        $image = Image::make($file_path);
+
+        // 进行大小调整的操作
+        $image->resize($max_width, null, function ($constraint) {
+
+            // 设定宽度是 $max_width，高度等比例缩放
+            $constraint->aspectRatio();
+
+            // 防止裁图时图片尺寸变大
+            $constraint->upsize();
+        });
+
+        // 对图片修改后进行保存
+        $image->save();
+    }
 }

app/Http/Controllers/UsersController.php

@@ -24,7 +24,7 @@ public function update(UserRequest $request, ImageUploadHandler $uploader, User
         $data = $request->all();
 
         if ($request->avatar) {
-            $result = $uploader->save($request->avatar, 'avatars', $user->id);
+            $result = $uploader->save($request->avatar, 'avatars', $user->id, 416);
             if ($result) {
                 $data['avatar'] = $result['path'];
             }

composer.json

@@ -7,6 +7,7 @@
     "require": {
         "php": "^8.0.2",
         "guzzlehttp/guzzle": "^7.2",
+        "intervention/image": "^2.7",
         "laravel/framework": "^9.2",
         "laravel/sanctum": "^2.14.1",
         "laravel/tinker": "^2.7",

config/image.php

@@ -0,0 +1,20 @@
+<?php
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Image Driver
+    |--------------------------------------------------------------------------
+    |
+    | Intervention Image supports "GD Library" and "Imagick" to process images
+    | internally. You may choose one of them according to your PHP
+    | configuration. By default PHP's "GD Library" implementation is used.
+    |
+    | Supported: "gd", "imagick"
+    |
+    */
+
+    'driver' => 'gd'
+
+];