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一个简单实现多条件查询的例子_PHP

WBOY
Release: 2016-06-01 12:29:04
Original
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在我们的网站设计过程中,经常会用到多条件查询,本文的源码是一个二手房屋查询的例子。在本例中,我们要实现能够通过地理位置,物业类型,房屋价格,房屋面积及信息发布日期等多个条件查询到客户所需的资料。以下是实现过程。
查询条件界面(略):
查询文件(search.php)
一、生成查询语句:

$conn=mysql_connect("localhost","root","");
$db=mysql_select_db("lingyun");
$query="select * from message where tradetype='".$tradetype."'"; //交易类型,如出租,出售
$SQL=$SQL . "wuye='" . $wuye . "'";
if($housetype!="不限"){
$query.=" && housetype='".$housetype."'"; //房屋类型,如二室一厅,三室二厅
}
if($degree!="不限"){
$query.=" && degree='".$degree."'"; //新旧程度
}
if($wuye!="不限"){
$query.=" && wuye='".$wuye."'"; //物业类型 如住房,商铺
}
if($price2!=""){
switch($price1){
case "大于":
$query.=" && price>'".$price2."'"; //价格
break;
case "等于":
$query.=" && price='".$price2."'";
break;
case "小于":
$query.=" && price break;
}
}
if($area2!=""){
switch($area1){
case "大于":
$query.=" && area>'".$area2."'"; //面积
break;
case "等于":
$query.=" && area='".$area2."'";
break;
case "小于":
$query.=" && area break;
}
}
switch($pubdate){ //发布日期
case "本星期内":
$query.=" && TO_DAYS(NOW()) - TO_DAYS(date) break;
case "一个月内":
$query.=" && TO_DAYS(NOW()) - TO_DAYS(date) break;
case "三个月内":
$query.=" && TO_DAYS(NOW()) - TO_DAYS(date) break;
case "六个月内":
$query.=" && TO_DAYS(NOW()) - TO_DAYS(date) break;
}
if($address!=""){
$query.=" && address like '%$address%'"; //地址
}
if(!$page){
$page=1;
}
?>

二、输出查询结果:
if ($page){
$page_size=20;
$result=mysql_query($query);
#$message_count=mysql_result($result,0,"total");
$message_count=10;
$page_count=ceil($message_count/$page_size);
$offset=($page-1)*$page_size;
$query=$query." order by date desc limit $offset, $page_size";
$result=mysql_query($query);
if($result){
$rows=mysql_num_rows($result);
if($rows!=0){
while($myrow=mysql_fetch_array($result)){
echo "

";
echo "一个简单实现多条件查询的例子_PHP";
echo "$myrow[id] $myrow[tradetype] $myrow[address] $myrow[wuye]($myrow[housetype])[$myrow[date]]";
echo "";
echo "详细内容";
echo "";
}
}
else echo "
一个简单实现多条件查询的例子_PHP

没有找到满足你条件的记录
";
}

$prev_page=$page-1;
$next_page=$page 1;
echo "
";
echo " 第".$page."/".$page_count."页 ";
if ($page echo "|第一页|";
}
else{
echo "|第一页|";
}
echo " ";
if ($prev_page echo "|上一页|";
}
else{
echo "|上一页|";
}
echo " ";
if ($next_page>$page_count){
echo "|下一页|";
}
else{
echo "|下一页|";
}
echo " ";
if ($page>=$page_count){
echo "|最后一页|";
}
else{
echo "|最后一页|";
}
echo "
";
}
else{
echo "

现在还没有房屋租赁信息!

";
}
echo "
";
?>


如果在使用过程中出现什么问题,请与我联系(yk_lingyun@21cn.com),欢迎指正!


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