Get-ADUserGroups.ps1

<#

      Author: I.C.A. Strachan
      Version:
      Version History:

      Purpose: Get User nested group membership report

#>
[CmdletBinding()]
param(
   [string]
   $Identity
)

function Get-ADUserGroups { 
   param ($Group,$indent,$Parent)

   Get-ADGroup –Identity $Group –Properties MemberOf | 
   Select-Object -ExpandProperty MemberOf |
   ForEach-Object {
      $GroupName = ($_).Split(',')[0].Split('=')[1]
      if(!(($Parent).Contains($GroupName))){
         $Newparent = "$Parent/$GroupName" 
         [PSCustomObject]@{
            Group = $GroupName.PadLeft($GroupName.Length + ($indent*5),'_')
            Name = $GroupName
            NestedLevel = $indent
            InheritedFrom = $Parent
         }
         Get-ADUserGroups -Group $_ -indent ($indent+1) -Parent $Newparent
      }
      else{
         [PSCustomObject]@{
            Group = $GroupName.PadLeft($GroupName.Length + ($indent*5),'_')
            Name = $GroupName
            NestedLevel = $indent
            InheritedFrom = "$GroupName/Circulair. Please review"
         }
      }
   }
}

#region Main
Get-ADUser -identity $Identity -Properties MemberOf |
Select-Object -ExpandProperty MemberOf |
ForEach-Object {
   $GroupName = ($_).Split(',')[0].Split('=')[1]
   [PSCustomObject]@{
      Group = $GroupName
      Name = $GroupName
      NestedLevel = 0
      InheritedFrom = $null
   }
   Get-ADUserGroups -Group $_ -indent 1 -Parent $GroupName
} | 
Out-GridView
#endregion