Powershell restart features

Help function from http://sharepoint.stackexchange.com/questions/13051/powershell-script-to-check-feature-status-enabled-disabled-before-activating

function CheckSPFeatureActivated 
{ 
    param([string]$Id=$(throw "-Id parameter is required!"), 
            [Microsoft.SharePoint.SPFeatureScope]$Scope=$(throw "-Scope parameter is required!"), 
            [string]$Url)   
    if($Scope -ne "Farm" -and [string]::IsNullOrEmpty($Url)) 
    { 
        throw "-Url parameter is required for scopes WebApplication,Site and Web" 
    } 
    $feature=$null 
 
 switch($Scope) 
  { 
        "Farm" { $feature=Get-SPFeature $Id -Farm } 
        "WebApplication" { $feature=Get-SPFeature $Id -WebApplication $Url } 
        "Site" { $feature=Get-SPFeature $Id -Site $Url –ErrorAction SilentlyContinue} 
        "Web" { $feature=Get-SPFeature $Id -Web $Url –ErrorAction SilentlyContinue} 
  } 
 
    #return if feature found or not (activated at scope) in the pipeline 
    $feature -ne $null 
}


foreach($felement in $FEATURE_ARRAY)
{
 
 $fActive = $FALSE 
 if($felement -eq "SpecialFeature")
 {   
  $fActive = CheckSPFeatureActivated -Id $felement -Scope "Web" -Url $SUB_SITE_URL   
 }
 else
 {
  $fActive = CheckSPFeatureActivated -Id $felement -Scope "Site" -Url $MAIN_URL
 }
 
 if($fActive)
 {
  Write-Host "Feature"$felement" is already activated. Restarting Feature." -foregroundcolor DarkCyan
  if($felement -eq "SpecialFeature")
  {
   
   Write-Host "Deactivating...."
   Disable-SPFeature -Identity $felement -url $SUB_SITE_URL -Confirm:$false
   Write-Host "Activating..."
   Enable-SPFeature -Identity $felement -url $SUB_SITE_URL
   
  }
  else
  { 
   Write-Host "Deactivating...."
   Disable-SPFeature -Identity $felement -url $MAIN_URL -Confirm:$false
   Write-Host "Activating..."
   Enable-SPFeature -Identity $felement -url $MAIN_URL  
  }
  Write-Host $felement" Activated." -foregroundcolor Green
 }
 else
 {
  Write-Host $felement" not activated. " -foregroundcolor Yellow
  if($felement -eq "SpecialFeature")
  {
   Enable-SPFeature -Identity $felement -url $SUB_SITE_URL
  }
  else
  {
   Enable-SPFeature -Identity $felement -url $MAIN_URL
  }
  Write-Host $felement" Activated." -foregroundcolor Green
 }
}