Copy all files to new folder in parent directory, rename if same

copyall.ps1

function fcopy ($SourceDir,$DestinationDir)
{
	Get-ChildItem $SourceDir -Recurse | Where-Object { $_.PSIsContainer -eq $false } | ForEach-Object ($_) {	
		$SourceFile = $_.FullName
		$DestinationFile = $DestinationDir + $_
		write-host "------------------------------------"
		write-host "Source: $SourceFile"
		write-host "Dest  : $DestinationFile"		
		if (Test-Path "$DestinationFile"){
			if( (Get-FileHash "$SourceFile").Hash -ne (Get-FileHash "$DestinationFile").Hash ) {
				$i = 0
				while (Test-Path "$DestinationFile") {
					$i += 1
					$DestinationFile = $DestinationDir + $_.basename + '-' + $i + $_.extension
					if ((Get-FileHash "$SourceFile").Hash -eq (Get-FileHash "$DestinationFile").Hash ) {
						break
					}
					write-host $i
				}
				if ((Get-FileHash "$SourceFile").Hash -ne (Get-FileHash "$DestinationFile").Hash ) {
					write-host "Rename and copy to $DestinationFile"
					Copy-Item -Path "$SourceFile" -Destination "$DestinationFile"
				}
			}
		} else {
			write-host "Copying to $DestinationFile"
			Copy-Item -Path "$SourceFile" -Destination "$DestinationFile"
		}
	}
}
$currentLoc = Get-Location
$ShortPath = (New-Object -ComObject Scripting.FileSystemObject).GetFolder($currentLoc).ShortPath
$parentFolder = split-path $ShortPath
$currentFolder = Split-Path -Path (Get-Location) -Leaf
$copyTo = $parentFolder + '\' + $currentFolder + " - ALL\"
$temp = New-Item -ItemType Directory -Force -Path "$copyTo"
fcopy -SourceDir $ShortPath -DestinationDir "$copyTo"