PowerShell Script to download all files and folders from a SharePoint Library along with its Structure

Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue

# Function to Download All Files from a SharePoint Library

Function DownloadFiles($SPFolderURL, $LocalFolderPath)

{

        #Get the Source SharePoint Folder

        $SPFolder = $web.GetFolder($SPFolderURL)

        $LocalFolderPath = Join-Path $LocalFolderPath $SPFolder.Name

        #Ensure the destination local folder exists!

        if (!(Test-Path -path $LocalFolderPath))

        {  

             #If it doesn't exists, Create

             $LocalFolder = New-Item $LocalFolderPath -type directory

        }

        #Loop through each file in the folder and download it to Destination

        foreach ($File in $SPFolder.Files)

        {

            #Download the file

            $Data = $File.OpenBinary()

        $FilePath= Join-Path $LocalFolderPath $File.Name

            [System.IO.File]::WriteAllBytes($FilePath, $data)

        }

        #Process the Sub Folders & Recursively call the function

        foreach ($SubFolder in $SPFolder.SubFolders)

        {

           if($SubFolder.Name -ne "Forms") #Leave "Forms" Folder

             {

                  #Call the function Recursively

                  DownloadFiles $SubFolder $LocalFolderPath

             }

        }

    }

#Get the Source Web

$Web = Get-SPWeb "http://ngo:37276/ngo"

#Get the Source SharePoint Library's Root Folder

$SourceLibrary =  $Web.Lists["NGODocuments"].RootFolder

#Local Folder, where the Files to be downloaded

$DestinationPath = "C:\Test"

#Call the Download Files Function

DownloadFiles $SourceLibrary $DestinationPath