数据访问 例子 租房子

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<!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 "../DBDA.class.php";
$db = new DBDA();
	$tj1 = " 1=1 ";
	$tj2 = " 1=1 ";
	$tj3 = " 1=1 ";
	$tj4 = " 1=1 ";
	$arr1 = array();
	if(!empty($_POST["qy"])){
		$arr1 = $_POST["qy"];
		$str = implode("\',\'",$arr1);
		$tj1 = " area in (\'{$str}\')";		
		}
		$arr2 = array();
			if(!empty($_POST["zl"])){
			$arr2 = $_POST["zl"];
			$str = implode("\',\'",$arr2);
			$tj2 = " renttype in (\'{$str}\')";		
			}
	$arr3 = array();
	if(!empty($_POST["fw"])){
		$arr3 = $_POST["fw"];
		$str = implode("\',\'",$arr3);
		$tj3 = " housetype in (\'{$str}\')";		
		}
	$key = "";
	if(!empty($_POST["key"])){
		$key = $_POST["key"];
		$tj4 = " keyword like \'%{$key}%\'";   
		}
?>
<form action="fangwu.php" method="post">
<div>
区域: <input  type="checkbox" id="qy"/>全选<br /><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 /><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 /><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>

<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}";
	$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>

　　

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