PHP 练习：租房子

 <form action="text.php" method="post">
 区域：<input type="checkbox" id="qy" onclick="CheckAll()"  />全选<br />
 <?php
 include("../dbda.class.php");
 $db = new dbda();
 $sql = "select Area from House";
 $area = $db->Query($sql);
 foreach($area as $v)
 {
     echo "<input type='checkbox' class='qy' value='{$v[0]}' name='qy[]'/>{$v[0]}";
 }
 ?>
 <br /><br /><br />
 租赁类型: <input type="checkbox" id="lx" onclick="LXCheckAll()"   />全选<br />
 <?php
 $sql1 = "select distinct RentType from House";
 $renttype = $db->Query($sql1);
 foreach($renttype as $v)
 {
     echo "<input type='checkbox' class='lx' value='{$v[0]}' name='lx[]'/>{$v[0]}";
 }
 ?>
 <br /><br /><br />
 房屋类型：<input type="checkbox" id="fw" onclick="FWCheckAll()"  />全选<br />
 <?php
 $sql2 = "select HouseType from House ";
 $housetype = $db->Query($sql2);
 foreach($housetype as $v)
 {
     echo "<input type='checkbox' class='fw' value='{$v[0]}' name='fw[]'/>{$v[0]}";
 }
 ?>
 <br /><br /><br />
 关键字:<input type="text" name="keyword" /><br />
 <br />
 <br />
 <input type="submit" value="搜索" />
 </form>

 <?php

 $tj1 = " 1=1";
 $tj2 = " 1=1";
 $tj3 = " 1=1";
 $tj4 = " 1=1";
 if(!empty($_POST["qy"]))
 {
     $qy = implode("','",$_POST["qy"]);
     $tj1 = " Area in ('{$qy}')";
 }
 if(!empty($_POST["lx"]))
 {
     $lx = implode("','",$_POST["lx"]);
     $tj2 = " RentType in ('{$lx}')";
 }
 if(!empty($_POST["fw"]))
 {
     $fw = implode("','",$_POST["fw"]);
     $tj3 = " HouseType in ('{$fw}')";
 }
 if(!empty($_POST["keyword"]))
 {
     $tj4 = " KeyWord like '%{$_POST['keyword']}%'";
 }
 $sqlz = "select * from House where {$tj1} and {$tj2} and {$tj3} and {$tj4}";
 $attr = $db->Query($sqlz);
 ?>
 <table width="100%" border="1" cellpadding="0" cellspacing="0">
 <tr><td>关键字</td><td>地区</td><td>面积</td><td>房租</td><td>租赁类型</td><td>房屋类型</td></tr>
 <?php
 foreach($attr as $v)
 {
     echo "<tr><td>{$v[1]}</td><td>{$v[2]}</td><td>{$v[3]}</td><td>{$v[4]}</td><td>{$v[5]}</td><td>{$v[6]}</td></tr>";
 }
 ?>
 </table>

JS页面

 <script type="text/javascript">
 function CheckAll()
 {
     var qx = document.getElementById("qy").checked;
     var ch = document.getElementsByClassName("qy");
     for(var i=0;i<ch.length;i++)
     {
         ch[i].checked = qx;
     }
 }
 function LXCheckAll()
 {
     var qx = document.getElementById("lx").checked;
     var ch = document.getElementsByClassName("lx");
     for(var i=0;i<ch.length;i++)
     {
         ch[i].checked = qx;
     }
 }
 function FWCheckAll()
 {
     var qx = document.getElementById("fw").checked;
     var ch = document.getElementsByClassName("fw");
     for(var i=0;i<ch.length;i++)
     {
         ch[i].checked = qx;
     }
 }
 </script>