租房子练习
代码：
create table zufang( id int auto_increment primary key, Keyword int comment "关键字", Area Varchar(50) comment"所属区域", SquareMeter int comment"使用面积（平方米）", Rent float comment"租金（每月）", RenType Varchar(50) comment"租赁类型", HouseType varchar(50) comment"房屋类型" )charset utf8;
2、将数据库中的内容展示出来
代码：
<?php $db = new MySQLi("localhost","root","","housedb"); !mysqli_connect_error() or die("连接错误"); $db->query("set names utf8"); $sql = "select * from house"; $result = $db->query($sql); $arr = $result->fetch_all(); ?> <!doctype html> <html> <head> <meta charset="utf-8"> <title>展示</title> </head> <body> <table border="1" width="100%"> <tr> <th>关键字</th> <th>区域</th> <th>使用面积</th> <th>租金</th> <th>租赁类型</th> <th>房屋类型</th> <th>操作</th> </tr> <?php foreach($arr as $v){ ?> <tr> <td><?php echo $v[1] ?></td> <td><?php echo $v[2] ?></td> <td><?php echo $v[3] ?>平方米</td> <td><?php echo $v[4] ?>.00</td> <td><?php echo $v[5] ?></td> <td><?php echo $v[6] ?></td> <td> <form action="adminChuli.php" method="post"> <input type="hidden" name="type" value="del"><!--传值到admin处理页面进行判断--> <input type="hidden" name="id" value="<?php echo $v[0]; ?>"><!--将id传到处理页面--> <button>删除</button> </form> <form action="add.php" method="post"> <input type="hidden" name="type" value="mod"><!--同上--> <input type="hidden" name="id" value="<?php echo $v[0]; ?>"> <button>编辑</button> </form> </td> </tr> <?php }?> </table> <a href="add.php"> <button >添加数据</button> </a> </body> </html>
3、添加/修改/删除表中的内容：
<?php $db = new MySQLi("localhost","root","","housedb"); !mysqli_connect_error() or die("连接错误"); $db->query("set names utf8"); $arr = array(); if($_POST){ $id = $_POST["id"]; $type = $_POST["type"]; $sql = "select * from house where id = $id "; $result = $db->query($sql); $arr = $result->fetch_row(); } $areaArr = array("板井","三义庙","上上城","天安门东","中关村"); $zlTypeArr = array("床位","短租","整租"); $houseTypeArr = array("1室1厅","2室1厅","3室2厅","4室2厅","平房","筒子楼"); ?> <!doctype html> <html> <head> <meta charset="utf-8"> <title><?php echo $type!="" ? "修改":"添加" ?>数据页面</title> </head> <body> <fieldset> <legend><?php echo $type!="" ? "修改":"添加" ?>房屋租赁信息</legend> <form action="adminChuli.php" method="post"> <input type="hidden" name="type" value="<?php echo $type != "" ? $type : "add"?>"> <input type="hidden" name="id" value="<?php echo $id != "" ? $id : ""?>"> <table> <tr> <td>关键字</td> <td> <input type="text" name="kword" value="<?php echo $arr[1] != "" ? $arr[1] : ""?>"> </td> </tr> <tr> <td>区域</td> <td> <select name="area"> <?php foreach($areaArr as $v){//将选项定死 if($arr[2] == $v){ echo "<option selected>$v</option>"; }else{ echo "<option >$v</option>"; } } ?> </select> </td> </tr> <tr> <td>使用面积</td> <td> <input type="text" name="usearea" value="<?php echo $arr[3] != "" ? $arr[3] : ""?>"> </td> </tr> <tr> <td>租金</td> <td> <input type="text" name="rent" value="<?php echo $arr[4] != "" ? $arr[4] : ""?>"> </td> </tr> <tr> <td>租赁类型</td> <td> <select name="zltype" > <?php foreach($zlTypeArr as $v){ if($arr[5] == $v){ echo "<option selected>$v</option>"; }else{ echo "<option >$v</option>"; } } ?> </select> </td> </tr> <tr> <td>房屋类型</td> <td> <select name="housetype" > <?php foreach($houseTypeArr as $v){ if($arr[6] == $v){ echo "<option selected>$v</option>"; }else{ echo "<option >$v</option>"; } } ?> </select> </td> </tr> </table> <button>提交</button> </form> </fieldset> </body> </html>
后台处理：
<?php $db = new MySQLi("localhost","root","","housedb"); !mysqli_connect_error() or die("连接错误"); $db->query("set names utf8"); $type = $_POST["type"]; //进行判断 如果$type==add执行添加sql语句；如果$type==del执行删除sql语句；如果$type==mod执行编辑sql语句 switch($type){ case "add": $kword = $_POST["kword"]; //关键字 $area = $_POST["area"]; // 区域 $usearea = $_POST["usearea"]; //使用面积 $rent = $_POST["rent"]; //租金 $zltype = $_POST["zltype"]; //租赁类型 $housetype = $_POST["housetype"]; //房屋类型 $sql = "insert into house(keyword,area,squareMeter,rent,rentype,housetype) values('$kword','$area','$usearea','$rent','$zltype','$housetype')"; $result = $db->query($sql); header("location:show_admin.php"); break; case "del": $id = $_POST["id"]; $sql = "delete from house where id = $id ";//id是唯一的 $result = $db->query($sql); header("location:show_admin.php"); break; case "mod": $id = $_POST["id"]; $kword = $_POST["kword"]; //关键字 $area = $_POST["area"]; // 区域 $usearea = $_POST["usearea"]; //使用面积 $rent = $_POST["rent"]; //租金 $zltype = $_POST["zltype"]; //租赁类型 $housetype = $_POST["housetype"]; //房屋类型 $sql = "update house set ". "keyword='$kword',". "area='$area',". "squareMeter=$usearea,". "rent=$rent,". "rentype='$zltype',". "housetype='$housetype' where id = $id";//id是唯一的 $result = $db->query($sql); header("location:show_admin.php"); break; }
搜索信息：
代码：
<?php $db = new MySQLi("localhost","root","","housedb"); !mysqli_connect_error() or die("连接错误"); $db->query("set names utf8"); if($_POST){ //var_dump($_POST); $str = " where 1 = 1 "; if(!empty($_POST["quyu"])){ $areaArr = implode("','",$_POST["quyu"]); $str .= " and area in('$areaArr') "; } if(!empty($_POST["zltype"])){ $zltypeArr = implode("','",$_POST["zltype"]); $str .= " and rentype in('$zltypeArr') "; } if(!empty($_POST["housetype"])){ $housetypeArr = implode("','",$_POST["housetype"]); $str .= " and housetype in('$housetypeArr') "; } if(!empty($_POST["kword"])){ $str .= " and keyword like '%".$_POST["kword"]."%' "; } $sql = "select * from house ".$str; }else{ $sql = "select * from house"; } $result = $db->query($sql); $arr = $result->fetch_all(); $areaArr = array("板井","三义庙","上上城","天安门东","中关村"); $zlTypeArr = array("床位","短租","整租"); $houseTypeArr = array("1室1厅","2室1厅","3室2厅","4室2厅","平房","筒子楼"); ?> <!doctype html> <html> <head> <meta charset="utf-8"> <title>无标题文档</title> </head> <body> <form action="#" method="post"> 区域：<input type="checkbox" qxtype="quyu" onClick="qx(this)" >全选 <br> <?php foreach($areaArr as $v){ echo "<input class='quyu' type='checkbox' name='quyu[]' value='$v'>$v "; } ?> <br><br> 租赁类型：<input type="checkbox" qxtype="zityle" onClick="qx(this)" >全选 <br> <?php foreach($zlTypeArr as $v){ echo "<input class='zityle' type='checkbox' name='zltype[]' value='$v'>$v "; } ?> <br><br> 房屋类型：<input type="checkbox" qxtype="housetype" onClick="qx(this)">全选 <br> <?php foreach($houseTypeArr as $v){ echo "<input class='housetype' type='checkbox' name='housetype[]' value='$v'>$v "; } ?><br><br> 关键字 ： <input type="text" name="kword"> <button>搜索</button> </form> <table border="1" width="100%"> <tr> <th>关键字</th> <th>区域</th> <th>使用面积</th> <th>租金</th> <th>租赁类型</th> <th>房屋类型</th> </tr> <?php foreach($arr as $v){ ?> <tr> <td><?php echo $v[1] ?></td> <td><?php echo $v[2] ?></td> <td><?php echo $v[3] ?></td> <td><?php echo $v[4] ?></td> <td><?php echo $v[5] ?></td> <td><?php echo $v[6] ?></td> </tr> <?php }?> </table> </body> </html> <script> function qx(obj){ var qxtype = obj.getAttribute("qxtype"); var inputArr = document.getElementsByClassName(qxtype); for(var i = 0;i<inputArr.length;i++){ inputArr[i].checked = obj.checked; } } </script>
