IpPhone

[int64]$finalcount = 0
$userlist = get-aduser ctxtest2 -properties ipPhone,telephonenumber
#FOREACH LOOP TO PERFORM THE PHONE NUMBER FORMATTING ON EACH AD ACCOUNT AND SET THE OFFICEPHONE PROPERTY
foreach($user in $userlist)
{
    #RESET VARIABLES TO NULL
    #$ipphone = $null
    #$telephone = $null
    #$pnum = $null
    #$ipphone = $null

    #SET THE MAIN VARIABLES
    $guid = $user.objectGUID
    $ipphone = $user.ipPhone
    $ipphonelist = $user.telephonenumber
    $finalcount = $finalcount + 1
    #REMOVE FORMATTING FROM IPPHONE AND TELEPHONE AND COMPARE THE TWO
    if($ipphonelist)
    {
        $ipphonelist = $ipphonelist -replace "[^0-9]",""
        $ipphonelist = $ipphonelist.Substring(0)
    }
    #CONVERT $ipphonelist FROM STRING ARRAY TO STRING
    foreach($thing in $ipphonelist)
    {
        $pnum = $thing
    }
    #IF THERE IS NO TELEPHONENUMBER, THEN SKIP THE REST OF THE SCRIPT AND CONTINUE
    if(-not $pnum)
    {
        Write-Host "Phone does not exist for: "$user.name" --- Total number of accounts worked on:" $finalcount
        continue
    }
     if($ipphone -match $null)
    {
        Write-Host "IPPhone for "$user.name" is NULL"
        continue
    }
    if($ipphone -match 9999999999)
    {
        Write-Host "User: "$user.name"--- IPPhone: $ipphone"
        continue
    }
    #REFORMAT $pnum - REMOVE FORMATTING
    $pnum = $pnum -replace "[^0-9]",""
    $pnumlength = $pnum.length
    if($pnumlength -ge '11')
    {
        $pnum = $pnum.Substring(0,10)
    }
    elseif($pnumlength -eq 10)
    {
        #DO NOTHING, THIS IS CORRECT
    }
   write-host $user.Name Phone is $pnum --- Trying to set iphone to $pnum
   Set-ADUser -Identity $guid -Replace @{'ipPhone'=$pnum} -ErrorVariable pnumerror
   If ($pnumerror) {
   Write-Warning -Message 'Could not set';
   }
   else
   {
   Write-Host $user.Name IPPhone set to IPPhone: $pnum
   }
   write-host Total number of accounts worked on: $finalcount
   $ipphone = $null
    $telephone = $null
    $pnum = $null
    $ipphone = $null
   }