Export multiple outputs within foreach - powershell

Question

I'm looking to export some data, in particular an AD user along with their AD groups.
My current code:
$users = import-csv -path C:\path
foreach ($user in $users) {
$user | select name,SamAccountName | ft
Get-ADPrincipalGroupMembership $user.samaccountname | select name
#export-csv -path C:\path-NoTypeInformation -Append
}
The issue i'm having is whenever I try to export this information i'm only exporting the group output whereas I need the username to see who these groups actually belong to.
Perhaps there's a better method to achieve this?

Answer 1

You may want to use Select-Object to sort of "bind" the information together with a couple of calculated properties referencing the current $user's properties:
foreach ($user in $users) {
Get-ADPrincipalGroupMembership $user.samaccountname |Select Name,#{Name='User';Expression={$user.Name}},#{Name='SAMAccountName';Expression={$user.SAMAccountName}} |Export-Csv -Path C:\path -NoTypeInformation -Append
}
If you want to group the output in the shell by user name but only display the group name, you can use Format-Table Name -GroupBy User:
# collect the information
$groupMemberships = foreach ($user in $users) {
Get-ADPrincipalGroupMembership $user.samaccountname |Select Name,#{Name='User';Expression={$user.Name}},#{Name='SAMAccountName';Expression={$user.SAMAccountName}}
}
# format console output
$groupMemberships |Format-Table Name -GroupBy User
# export
$groupMemberships |Export-Csv -Path C:\path -NoTypeInformation -Append