当在 MYSQL 中找不到搜索结果时如何回显"no results"消息？

Question

我在我的网站上有一个mysql关键字搜索，它工作得很好。问题是，当有人搜索我没有添加的关键字时，结果页面上什么也没有显示。而不是什么都没有出现，我想有一个没有结果被发现的消息。我被告知必须使用以下代码:

<?php 
if (mysql_num_rows($rs_main) == 0) {
    echo "No records found.";
}
?>

但在过去的几天里，我一直试图在我的代码中实现该代码，但由于某种原因，我无法让它工作。如果有人能告诉我在哪里以及如何在我的代码中正确实现上面的代码来解决我的问题，我将非常感激，提前感谢。

这是我的代码，这样你可以更好地理解我的问题

<?php
function buildNavigation($pageNum_Recordset1,$tot… | ",$max_links=10, $show_page=true)
{
                GLOBAL $maxRows_Recordset1,$totalRows_Recordset…
    $pagesArray = ""; $firstArray = ""; $lastArray = "";
    if($max_links<2)$max_links=2;
    if($pageNum_Recordset1<=$totalPages_R… && $pageNum_Recordset1>=0)
    {
        if ($pageNum_Recordset1 > ceil($max_links/2))
        {
            $fgp = $pageNum_Recordset1 - ceil($max_links/2) > 0 ? $pageNum_Recordset1 - ceil($max_links/2) : 1;
            $egp = $pageNum_Recordset1 + ceil($max_links/2);
            if ($egp >= $totalPages_Recordset1)
            {
                $egp = $totalPages_Recordset1+1;
                $fgp = $totalPages_Recordset1 - ($max_links-1) > 0 ? $totalPages_Recordset1  - ($max_links-1) : 1;
            }
        }
        else {
            $fgp = 0;
            $egp = $totalPages_Recordset1 >= $max_links ? $max_links : $totalPages_Recordset1+1;
        }
        if($totalPages_Recordset1 >= 1) {
            #    ------------------------
            #    Searching for $_GET vars
            #    ------------------------
            $_get_vars = '';            
            if(!empty($_GET) || !empty($HTTP_GET_VARS)){
                $_GET = empty($_GET) ? $HTTP_GET_VARS : $_GET;
                foreach ($_GET as $_get_name => $_get_value) {
                    if ($_get_name != "pageNum_Recordset1") {
                        $_get_vars .= "&$_get_name=$_get_value";
                    }
                }
            }
            $successivo = $pageNum_Recordset1+1;
            $precedente = $pageNum_Recordset1-1;
            $firstArray = ($pageNum_Recordset1 > 0) ? "<a href="$_SERVER[PHP_SELF]?pageNum_Record… :  "$prev_Recordset1";
            # ----------------------
            # page numbers
            # ----------------------
            for($a = $fgp+1; $a <= $egp; $a++){
                $theNext = $a-1;
                if($show_page)
                {
                    $textLink = $a;
                } else {
                    $min_l = (($a-1)*$maxRows_Recordset1) + 1;
                    $max_l = ($a*$maxRows_Recordset1 >= $totalRows_Recordset1) ? $totalRows_Recordset1 : ($a*$maxRows_Recordset1);
                    $textLink = "$min_l - $max_l";
                }
                $_ss_k = floor($theNext/26);
                if ($theNext != $pageNum_Recordset1)
                {
                    $pagesArray .= "<a href="$_SERVER[PHP_SELF]?pageNum_Record…
                    $pagesArray .= "$textLink</a>" . ($theNext < $egp-1 ? $separator : "");
                } else {
                    $pagesArray .= "$textLink"  . ($theNext < $egp-1 ? $separator : "");
                }
            }
            $theNext = $pageNum_Recordset1+1;
            $offset_end = $totalPages_Recordset1;
            $lastArray = ($pageNum_Recordset1 < $totalPages_Recordset1) ?  "<a href="$_SERVER[PHP_SELF]?pageNum_Record… : "$next_Recordset1";
        }
    }
    return array($firstArray,$pagesArray,$lastArray…
}
?>
<?php require_once('Connections/theconnect.php… ?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  if (PHP_VERSION < 6) {
    $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  }
  $theValue = function_exists("mysql_real_escape_strin… ? mysql_real_escape_string($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_Recordset1 = 5;
$pageNum_Recordset1 = 0;
if (isset($_GET['pageNum_Recordset1'])) {
  $pageNum_Recordset1 = $_GET['pageNum_Recordset1'];
}
$startRow_Recordset1 = $pageNum_Recordset1 * $maxRows_Recordset1;
$colname_Recordset1 = "-1";
if (isset($_GET['textfield'])) {
  $colname_Recordset1 = $_GET['textfield'];
}

Answer 1

因为您使用的是Dreamweaver，所以只需添加一个Show Region if Recordset Empty命令并在其中添加"No search results found"消息