Powershell - 检查变量是否在数组中

Question

I created a script which return emails with specific subject and sender email addresses,

i have array of emails, and i need to compare each array member with email sender, and write output for allowed senders and if found, write output for disallowed ones

$sender = $result.Sender.Address - exports senders for each email
$allowed_senders = @("user1@example.com", "user2@example.com") - users who are allowed to send emails

I have 3 emails with following senders:

user1, user2 and user3

write-output "Searching for emails with subject New Empoyee.." | timestamp >> $LogFile
      Write-Verbose "Searching for emails with subject New Empoyee.."
      $searchfilter = new-object Microsoft.Exchange.WebServices.Data.SearchFilter+ContainsSubstring([Microsoft.Exchange.WebServices.Data.EmailMessageSchema]::Subject,"New Employee")
      $itemView = new-object Microsoft.Exchange.WebServices.Data.ItemView(999)
      $searchResults = $service.FindItems($Folder.ID, $searchfilter, $itemView)

      # Find destination folder

      $TargetFolderSearch = new-object Microsoft.Exchange.WebServices.Data.SearchFilter+IsEqualTo([Microsoft.Exchange.WebServices.Data.FolderSchema]::Displayname,"done") #for each folder in mailbox define search
      $TargetFolder = $MailboxRoot.FindFolders($TargetFolderSearch,$fvFolderView)
      Write-Verbose "Searching for emails with subject New Empoyee finished"
      write-output "Searching for emails with subject New Empoyee finished" | timestamp >> $LogFile

          write-output "Parsing Email Body..." | timestamp >> $LogFile 
          Write-Verbose "Parsing Email Body..."

           $allowed_senders = @("user1@example.com", "user2@example.com")
          foreach($result in $searchResults){
            $sender = $result.Sender.Address
              if ($array -notcontains $allowed_senders){
                 Write-Verbose "$sender is not allowed"
              }
              else{
                Write-Verbose "$sender is allowed"
              }

           }

user3@example.com is not in array so i expect following output

Expected output:

user3@example.com is not allowed

user1@example.com is allowed

user2@example.com is allowed

Actual output:

user1@example.com is not allowed

user2@example.com is not allowed

user3@example.com is not allowed

Answer 1

Figured it out:

i made a typo, i compared non-existing @array variable

 $TargetFolderSearch = new-object Microsoft.Exchange.WebServices.Data.SearchFilter+IsEqualTo([Microsoft.Exchange.WebServices.Data.FolderSchema]::Displayname,"done") #for each folder in mailbox define search
      $TargetFolder = $MailboxRoot.FindFolders($TargetFolderSearch,$fvFolderView)
      Write-Verbose "Searching for emails with subject New Empoyee finished"
      write-output "Searching for emails with subject New Empoyee finished" | timestamp >> $LogFile

          write-output "Parsing Email Body..." | timestamp >> $LogFile 
          Write-Verbose "Parsing Email Body..."

          $array = @("user1@example.com", "user2@example.com")
          foreach($result in $searchResults){
              $sender = $result.Sender.Address
              if($array -notcontains $sender){
                 Write-Verbose "Not Allowed:$sender"
              }  
              else{
                 Write-Verbose "Allowed:$sender"
              }

           }

Output:

user3@example.com is not allowed

user1@example.com is allowed

user2@example.com is allowed