如何让记录集“内容不重复出现”

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;

}

}



$maxRows_hx = 10;

$pageNum_hx = 0;

if (isset($_GET['pageNum_hx'])) {

  $pageNum_hx = $_GET['pageNum_hx'];

}

$startRow_hx = $pageNum_hx * $maxRows_hx;

 mysql_query("set names utf8");

mysql_select_db($database_hx98, $hx98);

$query_hx = "SELECT * FROM content_publish ORDER BY content_id DESC";

$query_limit_hx = sprintf("%s LIMIT %d, %d", $query_hx, $startRow_hx, $maxRows_hx);

$hx = mysql_query($query_limit_hx, $hx98) or die(mysql_error());

$row_hx = mysql_fetch_assoc($hx);







if (isset($_GET['totalRows_hx'])) {

  $totalRows_hx = $_GET['totalRows_hx'];