การ Query ข้อมูล ค่าน้ำค่าไฟเพื่อนำมาคำนวณ
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[PHP Code]
<?php
$user = 'tobedev';
$pass = 'abcd.1234';
?>
<html>
<head>
<title>CODEMANIA.BLOGSPOT.COM</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link rel="stylesheet" href="css/bootstrap.min.css">
<style>
.highlight {
background-color: #FFFF88;
}
.red_text{
color : red;
}
table th,table td{
text-align: center !important;
}
</style>
</head>
<body>
<?php
$year = isset($_GET['year']) ? $_GET['year'] : date('Y');
$month = isset($_GET['month']) ? $_GET['month'] : date('m');
if(strlen($month)==1){
$month = '0'.$month;
}
$current_year_month = $year . '-' . $month;
$prev_year_month = date('Y-m', strtotime('-1 months', strtotime($current_year_month)));
try {
$dbh = new PDO('mysql:host=localhost;dbname=test', $user, $pass);
$sth = $dbh->prepare("SELECT room_id,
SUM( IF( DATE_FORMAT( date_record, '%Y-%m' ) = '$prev_year_month', water, '' ) ) AS prev_water,
SUM( IF( DATE_FORMAT( date_record, '%Y-%m' ) = '$current_year_month', water, '' ) ) AS current_water,
SUM( IF( DATE_FORMAT( date_record, '%Y-%m' ) = '$prev_year_month', elect, '' ) ) AS prev_elect,
SUM( IF( DATE_FORMAT( date_record, '%Y-%m' ) = '$current_year_month', elect, '' ) ) AS current_elect
FROM `tb_meter_list`
WHERE DATE_FORMAT( date_record, '%Y-%m' ) = '$current_year_month'
OR DATE_FORMAT( date_record, '%Y-%m' ) = '$prev_year_month'
GROUP BY room_id");
$sth->execute();
$result = $sth->fetchAll();
$dbh = null;
} catch (PDOException $e) {
print "Error!: " . $e->getMessage() . "<br/>";
die();
}
//echo '<pre>', print_r($data, true), '</pre>';
?>
<div class="container">
<div class="header clearfix">
<h3 class="text-muted"><span class="red_text">PHP MySQL</span> : CODEMANIA.BLOGSPOT.COM </h3>
</div>
<form class="form-horizontal" method="GET" action="meter_list.php">
<div class="form-group">
<label for="inputEmail3" class="col-sm-2 control-label">เลือกเดือน : </label>
<input type="text" class="form-control" name="year" placeholder="เดือน" value="<?php echo $year;?>">
<input type="text" class="form-control" name="month" placeholder="เดือน" value="<?php echo $month;?>">
<input type="submit" value="ประมวลผล" />
</div>
</form>
<div class="row">
<table class="table table-bordered">
<thead>
<tr>
<th rowspan=2>ห้อง</th>
<th colspan=2>ค่าน้ำ</th>
<th colspan=2>ค่าไฟ</th>
</tr>
<tr>
<td align="center">เดือนที่แล้ว</td>
<td align="center">เดือนปัจจุบัน</td>
<td align="center">เดือนที่แล้ว</td>
<td align="center">เดือนปัจจุบัน</td>
</tr>
</thead>
<tbody>
<?php
foreach($result as $row){
?>
<tr>
<td><?php echo $row['room_id'];?></td>
<td><?php echo $row['prev_water'];?></td>
<td><?php echo $row['current_water'];?></td>
<td><?php echo $row['prev_elect'];?></td>
<td><?php echo $row['current_elect'];?></td>
</tr>
<?php }?>
</tbody>
</table>
</div>
</div><!-- container -->
<footer class="footer">
<br/><br/>
<div class="container">
<i>ติดตามความเคลื่อนไหวได้ที่ :: <a href='https://www.facebook.com/ToBeDeveloper'>https://www.facebook.com/ToBeDeveloper</a></i>
</div>
</footer>
</div> <!-- /container -->
</body>
</html>
[ SQL สำหรับสร้างตาราง]
--
-- Database: `test`
--
-- --------------------------------------------------------
--
-- Table structure for table `tb_meter_list`
--
CREATE TABLE IF NOT EXISTS `tb_meter_list` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`room_id` int(4) NOT NULL,
`water` double(15,2) NOT NULL,
`elect` double(15,2) NOT NULL,
`date_record` date NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COMMENT='ตารางจดบันทึกค่าน้ำค่าไฟหอพัก' AUTO_INCREMENT=10 ;
--
-- Dumping data for table `tb_meter_list`
--
INSERT INTO `tb_meter_list` (`id`, `room_id`, `water`, `elect`, `date_record`) VALUES
(1, 1, 2100.00, 20001.00, '2017-02-15'),
(2, 1, 2159.00, 20101.00, '2017-03-16'),
(3, 2, 2100.00, 10001.00, '2017-02-15'),
(4, 2, 2139.00, 10091.00, '2017-03-16'),
(5, 2, 2199.00, 10131.00, '2017-04-15'),
(6, 2, 2229.00, 10171.00, '2017-05-16'),
(7, 3, 1199.00, 60131.00, '2017-02-15'),
(8, 3, 1229.00, 60171.00, '2017-03-17'),
(9, 3, 1281.00, 60211.00, '2017-04-15');
