Powershell-如何计算今天创建的文件

I am somewhat new to powershell. But I'm trying to count how many files were created today. I have a job that creates files to a folder and id like to have a script count how many files were created today on the folder and after that id like to have a IF statement check that a certain number of files were created , if so write-host " Success there are # created today. " ELSE "Failure Only # were Created today".I am somewhat new to powershell. But I'm trying