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                            $file->getPathname(),是獲取到臨時目錄文件

exif\_imagetype()：返回的是圖片類型對應的常量

image\_type\_to\_extension()根據圖片類型常量，得到文件的后綴名

~~~bash
$ext = image_type_to_extension(exif_imagetype($file->getPathname()));

~~~

# tp6控制器示例代碼

~~~php
   //接收文件
        $files = $request->file();

        //文件驗證
        try {
            validate(['avatar' => 'fileMime:image/jpeg,image/png'])->check($files);
        } catch (ValidateException $e) {
            return fail($e->getError());
        }

        //上傳
        foreach ($files as $file) {
			$ext = image_type_to_extension(exif_imagetype($file->getPathname()));
		}

~~~
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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