Creates a website and an app pool in IIS.

Create-IisSite.ps1

#
# Creates a website and an app pool in IIS.
#
function Create-IisSite
{
	param([string]$SiteName, [string]$Url, [string]$DirectoryPath, [string]$AppPoolDotNetVersion = "v4.0")

	Import-Module WebAdministration			

	$iisAppPoolName = $SiteName

	cd IIS:\AppPools\

	#check if the app pool exists
	if (!(Test-Path $iisAppPoolName -PathType container))
	{
		#create the app pool
		$appPool = New-Item $iisAppPoolName
		$appPool | Set-ItemProperty -Name "managedRuntimeVersion" -Value $AppPoolDotNetVersion
	}

	cd IIS:\Sites\

	#check if the site exists
	if (Test-Path $SiteName -pathType container)
	{
		return
	}

	$bindings = @(
	   @{protocol="http";bindingInformation="*:80:" + $Url},
	   @{protocol="https";bindingInformation="*:443:" + $Url}
	)

	$iisApp = New-Item $SiteName -Bindings $bindings -PhysicalPath $DirectoryPath
	$iisApp | Set-ItemProperty -Name "applicationPool" -Value $iisAppPoolName
}