租房子

租房子示例
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

<body>
<h1>租房子</h1>
<?php
require_once "./2018.1.18/1.php";
$db = new DBDA();

$tj1 = " 1=1 ";
$tj2 = " 1=1 ";
$tj3 = " 1=1 ";
$tj4 = " 1=1 ";
$arr1 = array();
if(!empty($_POST["qy"])){
    // area in ('','','','')
    $arr1 = $_POST["qy"];
    $str = implode("','",$arr1);
    $tj1 = " area in ('{$str}') ";
}
$arr2 = array();
if(!empty($_POST["zl"])){
    // area in ('','','','')
    $arr2 = $_POST["zl"];
    $str = implode("','",$arr2);
    $tj2 = " renttype in ('{$str}') ";
}
$arr3 = array();
if(!empty($_POST["fw"])){
    // area in ('','','','')
    $arr3 = $_POST["fw"];
    $str = implode("','",$arr3);
    $tj3 = " housetype in ('{$str}') ";
}
$key = "";
if(!empty($_POST["key"])){
    $key = $_POST["key"];
    $tj4 = " keyword like '%{$key}%' ";
}
?>
<form action="main.php" method="post">
<div>
区域：<input type="checkbox" id="qy" />全选<br />
<?php
$sqlqy = "select distinct area from house";
$arrqy = $db->query($sqlqy);
foreach($arrqy as $v){
    if(in_array($v[0],$arr1)){
        echo "<input class='qy' type='checkbox' name='qy[]' value='{$v[0]}' checked='checked' />{$v[0]} &nbsp;";
    }else{
        echo "<input class='qy' type='checkbox' name='qy[]' value='{$v[0]}' />{$v[0]} &nbsp;";
    }
    
}
?>
</div>
<br />

<div>
租赁类型：<input type="checkbox" id="zl" />全选<br />
<?php
$sqlzl = "select distinct renttype from house";
$arrzl = $db->query($sqlzl);
foreach($arrzl as $v){
    if(in_array($v[0],$arr2)){
        echo "<input class='zl' type='checkbox' name='zl[]' value='{$v[0]}' checked='checked' />{$v[0]} &nbsp;";
    }else{
        echo "<input class='zl' type='checkbox' name='zl[]' value='{$v[0]}' />{$v[0]} &nbsp;";
    }
    
}
?>
</div>
<br />

<div>
房屋类型：<input type="checkbox" id="fw" />全选<br />
<?php
$sqlfw = "select distinct housetype from house";
$arrfw = $db->query($sqlfw);
foreach($arrfw as $v){
    if(in_array($v[0],$arr3)){
        echo "<input class='fw' type='checkbox' name='fw[]' value='{$v[0]}' checked='checked' />{$v[0]} &nbsp;";
    }else{
        echo "<input class='fw' type='checkbox' name='fw[]' value='{$v[0]}' />{$v[0]} &nbsp;";
    }
}
?>
</div>
<br />
<div>
关键字：<input type="text" name="key" value='<?php echo $key; ?>' />
</div>
<br />
<div>
<input type="submit" value="搜索" />
</div>
<br />

</form>

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

    
    $sql = "select * from house where {$tj1} and {$tj2} and {$tj3} and {$tj4}";
    //echo $sql;
    $arr = $db->query($sql);
    foreach($arr 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>
</body>
<script type="text/javascript">
var qy = document.getElementById("qy");
qy.onclick = function(){
    var zt = qy.checked;
    var ck = document.getElementsByClassName("qy");
    for(var i=0;i<ck.length;i++){
        ck[i].checked = zt;
    }
}
var zl = document.getElementById("zl");
zl.onclick = function(){
    var zt = zl.checked;
    var ck = document.getElementsByClassName("zl");
    for(var i=0;i<ck.length;i++){
        ck[i].checked = zt;
    }
}
var fw = document.getElementById("fw");
fw.onclick = function(){
    var zt = fw.checked;
    var ck = document.getElementsByClassName("fw");
    for(var i=0;i<ck.length;i++){
        ck[i].checked = zt;
    }
}
</script>
</html>
效果图