php租房子批量搜索例题

<table width="100%" cellpadding="0" cellspacing="0">
    <tr>
        <td>区域：<input type="checkbox" name="qx" onclick="quanxuan(this,‘ck‘)" />全选</td><!--设置复选框和点击事件，为批量选择做准备-->
    </tr>
 </table>

 <?php
    
    $sql1 = "select distinct area from house";//去重查询
    $arr1 = $db->query($sql1);
    
    foreach($arr1 as $v)
    {
        echo "<tr>
        <td><input type=‘checkbox‘ name=‘ck[]‘ class=‘ck‘ value=‘{$v[0]}‘ />{$v[0]}</td>
    </tr>";//遍历出复选框内容,ck[]是一个数组
    }
    ?><br />
<br />


<table width="100%" cellpadding="0" cellspacing="0">
    <tr>
        <td>租赁类型：<input type="checkbox" name="qx1" onclick="quanxuan(this,‘ck1‘)" />全选</td>
    </tr>
 </table>

 <?php
    
    $sql2 = "select distinct renttype from house";
    $arr2 = $db->query($sql2);
    
    foreach($arr2 as $v)
    {
        echo "<tr>
        <td><input type=‘checkbox‘ name=‘ck1[]‘ class=‘ck1‘ value=‘{$v[0]}‘ />{$v[0]}</td>
    </tr>";
    }
    ?><br />
<br />

    
<table width="100%" cellpadding="0" cellspacing="0">
    <tr>
        <td>房屋类型：<input type="checkbox" name="qx2" onclick="quanxuan(this,‘ck2‘)" />全选</td>
    </tr>
 </table>

 <?php
    
    $sql3 = "select distinct housetype from house";
    $arr3 = $db->query($sql3);
    
    foreach($arr3 as $v)
    {
        echo "<tr>
        <td><input type=‘checkbox‘ name=‘ck2[]‘ class=‘ck2‘ value=‘{$v[0]}‘ />{$v[0]}</td>
    </tr>";
    }
    ?><br />

<div>关键字：<input type="text" name="keyword" value="<?php echo $keyword ?>" />
<input type="submit" value="搜索" />
</div>   <br />    

<table  width="100%" border="1" cellpadding="0" cellspacing="0">
    <tr>
        <td>关键字</td>
        <td>区域</td>
        <td>面积</td>
        <td>租金</td>
        <td>租赁类型</td>
        <td>房屋类型</td>
    </tr>

<?php
$arr=$db->query($sql);
foreach($arr as $v)
{
    $str=str_replace($keyword,"<span style=‘color:red‘>{$keyword}</span>",$v[1]);//查找替换关键词变为红色    
    echo"<tr>
        <td>{$str}</td>
        <td>{$v[2]}</td>
        <td>{$v[3]}</td>
        <td>{$v[4]}</td>
        <td>{$v[5]}</td>
        <td>{$v[6]}</td>
    </tr>";
}

?>
</table>

function quanxuan(qx,a)
{
    //找到该全选按钮对应的checkbox列表
    var c=document.getElementsByClassName(a);
    //找全选按钮选中状态
    if(qx.checked)
    {
        for(var i=0; i<c.length;i++)
        {
            c[i].setAttribute("checked","checked");//添加已选
        }
    }
    else{
        for(var i=0;i<c.length;i++)
        {
            c[i].removeAttribute("checked");//去除已选
        }
    }
}


</script>

<?php
require "DBDA.class.php";
$db=new DBDA();
$keyword="";
$tj1=" 1=1 ";//多条件查询，一定空格
$tj2=" 1=1 ";
$tj3=" 1=1 ";
$tj4=" 1=1 ";
if(!empty($_POST["keyword"]))//判断是否为空
{
    $keyword=$_POST["keyword"];//提取数据
    $tj1=" keyword like ‘%{$keyword}%‘ ";//设置条件
}
if(!empty($_POST["ck"]))
{
    $arr4=$_POST["ck"];
    $str=implode("‘,‘",$arr4);//数组组成字符串
    $tj2=" area in (‘{$str}‘) ";
}
if(!empty($_POST["ck1"]))
{
    $arr5=$_POST["ck1"];
    $str=implode("‘,‘",$arr5);
    $tj3=" renttype in (‘{$str}‘) ";
}
if(!empty($_POST["ck2"]))
{
    $arr6=$_POST["ck2"];
    $str=implode("‘,‘",$arr6);
    $tj4=" housetype in (‘{$str}‘) ";
}
$tj=" {$tj1}and{$tj2}and{$tj3}and{$tj4} ";
$sql="select * from house where".$tj;
?>  

<form action="house.php" method="post">
</form><!--要将所有代码嵌套在form表单中-->