php makearray implode

$agent_ids = implode(',',make_array($members,'ccid'));
  

  
$billsec_avg=array_sum(make_array($arr,'billsec'))/count($arr);
$billsec_avg_time=date("H:i:s",strtotime('1970-01-01 24:00:00').(int)$billsec_avg);