Different Results with Powershel v2 and v3

Question

Hope someone can help me determine why there is a difference in my data between v2 and v3 of Powershell. I do my development on my laptop which has version 3 installed, but the script is executed on a server which has version 2 installed.
#create directory searcher object and set it's porperties
$searcher = New-Object DirectoryServices.DirectorySearcher
# (!userAccountControl:1.2.840.113556.1.4.803:=2) - Filters out disabled accounts
$searcher.Filter = '(&(objectCategory=person)(objectClass=user)(!samaccountname=ITS-*)(!userAccountControl:1.2.840.113556.1.4.803:=2))'
$searcher.PageSize = 5
$searcher.SearchRoot = "LDAP://OU=District Offices,DC=myDomain,DC=com"
#load only the following properties
$params = @("samaccountname","sn","givenname","mail","physicaldeliveryofficename","department","title","manager","distinguishedname")
foreach($param in $params)
$searcher.PropertiesToLoad.Add($param) | Out-Null
try
$found = $searcher.FindAll()
$found | ForEach-Object {
if (($_.Properties["distinguishedname"] -notlike "*,OU=Generic User Accounts*") -and ($_.Properties["title"] -notlike "*Consultant*") `
-and ($_.Properties["title"] -notlike "*Commissioner*") -and ($_.Properties["title"] -notlike "*Security Guard*") `
-and ($_.Properties["title"] -notlike "*OSC*") -and ($_.Properties["title"] -notlike "*DCC*Temp*") -and ($_.Properties["samaccountname"] -ne "tbjohn") `
-and (($_.Properties["mail"] -ne "")))
$filtered += $_
Running this script on my machine produces the data that the user is looking for. When I run it on the server, there are users in the data file that should not be. In the filter statement if I change
-and (($_.Properties["mail"] -ne "")))
#TO BE
-and (($_.Properties["mail"] -ne $null)))
Then those users are removed, but then other users are included and I haven't figured out why yet. Why would there be a difference, with the above script? I would think that should work in any version but obviously that is not true.
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Answer 1

jrv, with your modifications, things look to be going great, but again I am having an issue between version 3 and version 2 of powershell
I have the following code in a file
$searcher = New-Object DirectoryServices.DirectorySearcher
$searcher.Filter = '(&(objectCategory=person)(objectClass=user)(mail=*)(!samaccountname=ITS-*)(!userAccountControl:1.2.840.113556.1.4.803:=2))'
$searcher.PageSize = 5
$searcher.SearchRoot = "LDAP://OU=District Offices,DC=MyDomain,DC=com"
#load only the following properties
$params = @("samaccountname","sn","givenname","mail","physicaldeliveryofficename","department","title","manager","distinguishedname")
foreach($param in $params)
$searcher.PropertiesToLoad.Add($param) | Out-Null
# Filtered results to exclude certain OU's
$filtered = @()
try
$filtered += $searcher.FindAll() | Where {
$_.Properties["distinguishedname"][0] -notmatch ",OU=Generic User Accounts" `
-and $_.Properties["title"][0] -notmatch "Consultant|Commissioner|Security Guard|OCS|DCC.*Temp" `
-and $_.Properties["samaccountname"][0] -ne "tbjohn"
$filtered.Count
catch
Write-Host "Error occured $_"
exit
I then did two different tests. In a command window I run the following
C:\Windows\System32\WindowsPowershell\v1.0\powershell.exe -Version 3.0 -ExecutionPolicy RemoteSigned -File F:\PS_Scripts\ADTest.ps1
The results here return the count of 2485, yet if I force it to use version two with the following command
C:\Windows\System32\WindowsPowershell\v1.0\powershell.exe -Version 2.0 -ExecutionPolicy RemoteSigned -File F:\PS_Scripts\ADTest.ps1
The results returned is an error stating "Cannot index into a null array", is there a difference in the DirectorySearcher object in version 2.0 compared to version 3.0?
If you find that my post has answered your question, please mark it as the answer. If you find my post to be helpful in anyway, please click vote as helpful.
Don't Retire Technet