Delete Webs Recursive with PowerShell

$web = Get-SPWeb "https://localhost/sites/webwithsubwebs/"

function RemoveSPWebRecursively([Microsoft.SharePoint.SPWeb] $web)

{

    $subwebs = $web.GetSubwebsForCurrentUser()

    foreach($subweb in $subwebs)

    {

        RemoveSPWebRecursively($subweb)

        $subweb.Dispose()

    }

    Remove-SPWeb $web -Confirm:$false

}

RemoveSPWebRecursively $web