PHP+MySQL按时间段查询记录代码

代码如下：

<?php

//搜索
$StarLevel = $_GET["starlevel"];

$StartDate=$_GET["StartDate"];

$EndDate=$_GET["EndDate"];

$Key = $_GET["k"]; 

if($_GET["page"] == ""){
	$Page = 1;
} else {
	$Page = $_GET["page"];
}

$querySel="select *,ho.ID as hoID,ro.ID as roID from roomsy rsy left join room ro on rsy.RoomID=ro.ID left join hotel ho on rsy.HotelID=ho.ID where to_days(EndDate)-to_days(now())>=0";

if($StartDate) $querySel = $querySel .  " and to_days(EndDate)-to_days('".$StartDate."')>=0";

if($EndDate) $querySel = $querySel . " and to_days(EndDate)-to_days('".$EndDate."')<=0";

if($StarLevel) $querySel = $querySel . " and StarLevel = '". $StarLevel ."'";

if($Key) $querySel = $querySel . " and ro.RName like '%". $Key ."%'";

$querySel = $querySel . " order by SOrder,rsy.ID desc"; 

$result = mysql_query($querySel) or die(mysql_error());
$total_records = mysql_num_rows($result);   //取得总记录数

$page_size = 12;  //每页显示的条数
$nums = $total_records;  //总条目数
$sub_pages = 5;   //每次显示的页数
$pageCurrent = $_GET["page"];     //得到当前是第几页    

if(!$pageCurrent) $pageCurrent = 1;

//$begin_record = 0;   //显示记录的首行序号
$begin_record = ($pageCurrent - 1) * $page_size;

if($total_records> 0)
{ 

	//利用LIMIT关键字获取本页所要显示的记录,注意limit两边要"空格"；
	$querySel = $querySel. " limit ".$begin_record. ", ".$page_size; 

	$result = mysql_query($querySel)   or   die(mysql_error());
	$current_records = mysql_num_rows($result); //取得本页的记录总数 

	//将查询结果放在$result_show 数组
	$result_show = array(); 

}

?>