Laravel 5.1 如何检查目录中是否存在文件？
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Laravel 5.1 How to check for the presence a file in a directory?
提问by Ali Erfani
I have a form in which users can upload files to the upload folder. In the controller I need to check if the file already exists in the upload directory and if it exists not to allow uploading the same file twice. How can I check this?
我有一个表单，用户可以在其中将文件上传到上传文件夹。在控制器中，我需要检查文件是否已存在于上传目录中，以及是否存在不允许上传同一文件两次。我该如何检查？
回答by dnetix
Maybe the problem it's that you are checking if the file exists in the root folder of the server.
也许问题在于您正在检查该文件是否存在于服务器的根文件夹中。
Try this
尝试这个
if (file_exists(public_path('uploads/'.$file->getClientOriginalName()))) {
return redirect()->back()->withInput()->withErrors([' File already exists.']);
}
回答by gencblakqori
If your files are stored in the "public" folder, then try this :
如果您的文件存储在“public”文件夹中，请尝试以下操作：
\File::exists(public_path().'\uploads\'.$file->getClientOriginalName())
回答by Chamandeep
First you have to mention use Fileat top of the page in your controller
首先，您必须在控制器的页面顶部提及 使用文件
$imagepath = "1.jpg";
$directoryPath = 'user_img/'.$imagepath;
if(File::exists($directoryPath)){
//echo "n exist"; die();
} else { echo "not exists"; }
