php多条件搜索

Posted 2020-07-30 好再来CF

php多条件查询

    01 December 2009 0:54 Tuesdayby 小屋

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。

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]&nbsp;$myrow[tradetype]&nbsp;$myrow[address]&nbsp;$myrow[wuye]($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 "&nbsp;第".$page."/".$page_count."页&nbsp";
         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>

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php多条件搜索

原文链接：https://sjolzy.cn/PHP-multi-criteria-query.html