อยากทราบวิธีการ ทำการนับจำนวนคนดูในหน้านั้นๆ ติดปัญหาไม่รู้ว่าจะต้องใส่โค้ดตรงไหน

<?php require_once('Connections/config.php'); ?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  if (PHP_VERSION < 6) {
    $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  }

  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}

$colname_animes = "-1";
if (isset($_GET['id'])) {
  $colname_animes = $_GET['id'];
}

mysql_select_db($database_config, $config);
$query_animes = sprintf("SELECT * FROM manager WHERE id = %s", GetSQLValueString($colname_animes, "int"));
$animes = mysql_query($query_animes, $config) or die(mysql_error());
$row_animes = mysql_fetch_assoc($animes);
$totalRows_animes = mysql_num_rows($animes);

mysql_select_db($database_config, $config);
$query_facebookreport = "SELECT facebook FROM managerweb";
$facebookreport = mysql_query($query_facebookreport, $config) or die(mysql_error());
$row_facebookreport = mysql_fetch_assoc($facebookreport);
$totalRows_facebookreport = mysql_num_rows($facebookreport);

$colname_animesid = "-1";
if (isset($_GET['id'])) {
  $colname_animesid = $_GET['id'];
}
?>