$temp_list =array();
foreach( $tempworkflow_list as $tmpWorkflow )
{
    foreach ( $templist_in_group as $tmpInGroup )
    {
        $id =  $tmpWorkflow->attribute("id");
        $workflow_id =  $tmpInGroup->attribute("workflow_id");
        if ( $tmpWorkflow->attribute( 'id' ) === $tmpWorkflow->attribute( 'workflow_id' ) )
        {
            $temp_list[] = $tmpWorkflow;
        }
    }
}

if ( $id === $workflow_id )