Question

所以问题是：每当用户上传文件时，都会检查该文件是否存在于目录中。如果存在，则在文件名中应将_n作为后缀，其中n是数字。所以在第二次上传时，文件名看起来应该像file_2.extension这应该用某种循环来完成吗？

if ($request->hasFile('file')) {
        $file = $request->file('file');
        $user = Auth::id();
        $filename = $file->getClientOriginalName();
        $extension = $file->getClientOriginalExtension();
        $onlyname = basename($filename, $extension);
        $filePath = 'uploads\\'.$user.'\\'.$file->getClientOriginalName();
        if (file_exists($filePath)) {
            if($file->move('uploads\\'.$user, $onlyname.'_'.$counter.'.'.$extension)){                
                $uploadHandler = new UploadHandler();       
                $uploadAttributes = $uploadHandler->uploadAttributes($request);   
            }
        }                     
    }

Answer 1

是的，您需要while循环

if ($request->hasFile('file')) {
    $file = $request->file('file');
    $user = Auth::id();
    $filename = $file->getClientOriginalName();
    $extension = $file->getClientOriginalExtension();
    $onlyname = basename($filename, $extension);
    $filePath = 'uploads\\'.$user.'\\'.$file->getClientOriginalName();

    if (file_exists($filePath)) {
        $counter = 2;
        while (file_exists($filePath)){
            $filePath = 'uploads\\'.$user. $onlyname.'_'.$counter.'.'.$extension;
            $counter ++;
        }
    }
    if($file->move($filePath)){                
        $uploadHandler = new UploadHandler();       
        $uploadAttributes = $uploadHandler->uploadAttributes($request);   
    }                     
}

Answer 2

是的，您可以使用while循环，如下所示：

while( file_exists($filePath) ) {
     // increment your $counter and update $filePath accordingly
}

计数器在文件名中

2 个答案: