$nowtime=date("Y-m-d", time());
$ntime=explode("-",$nowtime);
$birth1="19";
$birth2=substr(730913-1783813,0,2);
$birth=$birth1."".$birth2;
$month=substr($birth,4,-2);
$manage = $ntime[0]-$birth; 
  if($ntime[1]<$year){ $manage--;  echo"  (만 ${manage}세)"; }
  else{ echo" (만 ${manage}세)"; }