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": $query.=" && price<'".$price2."'"; break; } } if($area2!=""){ switch($area1){ case "大于": $query.=" && area>'".$area2."'"; //面积 break; case "等于": $query.=" && area='".$area2."'"; break; case "小于": $query.=" && area<'".$area2."'"; break; } } switch($pubdate){ //发布日期 case "本星期内": $query.=" && TO_DAYS(NOW()) - TO_DAYS(date)<=7"; break; case "一个月内": $query.=" && TO_DAYS(NOW()) - TO_DAYS(date)<=30"; break; case "三个月内": $query.=" && TO_DAYS(NOW()) - TO_DAYS(date)<=91"; break; case "六个月内": $query.=" && TO_DAYS(NOW()) - TO_DAYS(date)<=183"; break; } if($address!=""){ $query.=" && address like '%$address%'"; //地址 } if(!$page){ $page=1; } ?>
二、输出查询结果: <?php if ($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($result)){ echo "<tr>"; echo "<td width='15' height='12'><img src='image/home2.gif' width='14' height='14'></td>"; echo "<td width='540' height='12'>$myrow[id] $myrow[tradetype] $myrow[address] $myrow[wuye]($myrow[housetype])<font style='font-size:9pt'>[$myrow[date]]</font>"; echo "</td>"; echo "<td width='75' height='12'><a href='view_d.php?code=$myrow[code]' target='_blank'>详细内容</a></td>"; echo "</tr>"; } } else echo "<tr><td><div align='center'><img src='image/sorry.gif'><br><br>没有找到满足你条件的记录</div></td></tr>"; }
$prev_page=$page-1; $next_page=$page+1; echo "<div align='center'>"; echo " 第".$page."/".$page_count."页 "; if ($page<=1){ echo "|第一页|"; } else{ echo "<a href='$PATH_INFO?page=1'>|第一页|</a>"; } echo " "; if ($prev_page<1){ echo "|上一页|"; } else{ echo "<a href='$PATH_INFO?page=$prev_page'>|上一页|</a>"; } echo " "; if ($next_page>$page_count){ echo "|下一页|"; } else{ echo "<a href='$PATH_INFO?page=$next_page'>|下一页|</a>"; } echo " "; if ($page>=$page_count){ echo "|最后一页|"; } else{ echo "<a href='$PATH_INFO?page=$page_count'>|最后一页|</a>"; } echo "</div>"; } else{ echo "<p align='center'>现在还没有房屋租赁信息!</p>"; } echo "<hr width="100%" size="1">"; ?> </table> 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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