Create a zip file using powershell

# Zip Backup

<#
Creates a Zip file of a given folder in another location, with the date as the name.

Parameters:
SourceLocation - Location of source files (no trailing slash required)
DestinationLocation - Location of destination (folder - no trailing slash required)
#>

$SourceLocation="\\server33\resources\forge"
$DestinationLocation="e:\backup\forge"


# Get date and time
$TodaysDate=get-date -UFormat "%Y%m%d"
$TodaysTime=get-date -UFormat "%H%M"


# Set random directory to the users temp directory plus a random number
$RandomDirectoryName=get-random
$TemporaryLocation=$env:TEMP+"\"+$RandomDirectoryName

# Prepare the Destination file name and path
$DestinationFile=$DestinationLocation+"\"+$TodaysDate+$TodaysTime+".zip"


# if the temporary path already exists / exit with error
if (!(Test-Path -path $TemporaryLocation))
{
    # Create the temporary location
    new-item $TemporaryLocation -type directory

    # Copy the source to the destination
    $CopyResults=copy-item $SourceLocation -destination $TemporaryLocation -recurse -passthru
    if ($CopyResults)
    {
        # Compress the file
        Add-Type -assembly System.IO.Compression.FileSystem
        $compressionLevel = [System.IO.Compression.CompressionLevel]::Optimal
        [system.io.compression.zipfile]::CreateFromDirectory($TemporaryLocation,$DestinationFile,$CompressionLevel,$false)

        # Delete the temporary location
        remove-item $TemporaryLocation -Force -recurse
    }
    else
    {
        # if the zip fails, produce error
        write-host -BackgroundColor white -ForegroundColor red "Failed creating ZIP file"
    }
}
else
{
    write-host -BackgroundColor white -ForegroundColor Red "Failed - temporary folder already exists.  Try again"
}