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index.php
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index.php
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<?php
// Get average functions and all that stuff
include 'lib/functions.php';
// Load the configuration
$config = getConfig();
// Load the temperature.log file
$temperatureFile = file_get_contents('temperature.log');
// Regex to capture format: 2013-07-22T21:30:01+0200;46.5
$regex = "/^((?:[0-9]{2,4}-?){3})T((?:[0-9]{2}:?){3}).*?;([0-9.]*$)/im";
preg_match_all($regex, $temperatureFile, $result);
// Prepare the values
$values = $result[3];
$floatValues = array();
foreach ($values as $value) {
$floatValue = floatval($value);
// Conversation to farenheit?
if ($config['unit'] == 'f') {
$floatValue = $floatValue * 9 / 5 + 32; // Conversion to Farenheit
}
$floatValues[] = $floatValue;
}
$valuesLast24Hours = array_slice($floatValues, -96);
$valuesLastWeek = array_slice($floatValues, -96*7);
// Merge date and time part together
$labels = array_map(function($a, $b){
$dateString = $a . ' ' . $b . ' UTC';
return strtotime($dateString) * 1000;
}, $result[1], $result[2]);
// Create Points for Flot charting library
$points = array_map(function($a, $b){
return array($a, $b);
}, $labels, $floatValues);
// Calculate average and min/max values
$average = average($floatValues);
$lowest = getMin($floatValues);
$highest = getMax($floatValues);
$average24Hours = average($valuesLast24Hours);
$lowest24Hours = getMin($valuesLast24Hours);
$highest24Hours = getMax($valuesLast24Hours);
$averageWeek = average($valuesLastWeek);
$lowestWeek = getMin($valuesLastWeek);
$highestWeek = getMax($valuesLastWeek);
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Raspberry Pi Monitor</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="">
<meta name="author" content="">
<meta http-equiv="refresh" content="900">
<!-- Le styles -->
<link href="css/bootstrap.css" rel="stylesheet">
<style>
body {
padding-top: 60px; /* 60px to make the container go all the way to the bottom of the topbar */
}
</style>
<link href="css/bootstrap-responsive.css" rel="stylesheet">
<!-- HTML5 shim, for IE6-8 support of HTML5 elements -->
<!--[if lt IE 9]>
<script src="js/html5shiv.js"></script>
<![endif]-->
</head>
<body>
<div class="navbar navbar-inverse navbar-fixed-top">
<div class="navbar-inner">
<div class="container">
<button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="brand" href="#">Raspberry Pi</a>
<div class="nav-collapse collapse">
<ul class="nav">
<li class="active"><a href="#">Temperature</a></li>
</ul>
</div><!--/.nav-collapse -->
</div>
</div>
</div>
<div class="container">
<div class="row">
<h3>Last 24 Hours</h3>
<div id="day" style="height:300px" class="span9"></div>
<div class="span2 well">
<p>Average: <strong class="pull-right"><?php echo $average24Hours;?> C°</strong></p>
<p>Lowest: <strong class="pull-right"><?php echo $lowest24Hours?> C°</strong></p>
<p>Highest: <strong class="pull-right"><?php echo $highest24Hours?> C°</strong></p>
</div>
</div>
<div class="row">
<h3>Last Week</h3>
<div id="week" style="height:300px" class="span9"></div>
<div class="span2 well">
<p>Average: <strong class="pull-right"><?php echo $averageWeek;?> C°</strong></p>
<p>Lowest: <strong class="pull-right"><?php echo $lowestWeek?> C°</strong></p>
<p>Highest: <strong class="pull-right"><?php echo $highestWeek?> C°</strong></p>
</div>
</div>
<div class="row">
<h3>Overall</h3>
<div id="overall" style="height:300px" class="span9"></div>
<div class="span2 well">
<p>Average: <strong class="pull-right"><?php echo $average;?> C°</strong></p>
<p>Lowest: <strong class="pull-right"><?php echo $lowest?> C°</strong></p>
<p>Highest: <strong class="pull-right"><?php echo $highest?> C°</strong></p>
</div>
</div>
</div> <!-- /container -->
<!-- Le javascript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="js/jquery.js"></script>
<script src="js/bootstrap.min.js"></script>
<script src="js/jquery.flot.min.js"></script>
<script src="js/jquery.flot.time.min.js""></script>
<script src="js/jquery.flot.tooltip.min.js""></script>
<?php
// Prepare the data
$pointsDay = array_slice($points, -96);
$pointsWeek = array_slice($points, -672);
?>
<script type="text/javascript">
$(document).ready(function() {
var options = {
xaxis: {
mode: "time",
format: "%d.%m.Y %H:%M"
},
yaxis: {
tickFormatter: function(value) {
return value.toFixed(1) + ' <?php echo strtoupper($config['unit'])?>°';
}
},
grid: {
hoverable: true,
clickable: true,
},
tooltip: true,
tooltipOpts: {
content: "%y"
}
};
var dataDay = [{
color: "rgb(212,62, 48)",
data: <?php echo json_encode($pointsDay);?>
}];
$.plot($("#day"), dataDay, options);
var dataWeek = [{
color: "rgb(212,62, 48)",
data: <?php echo json_encode($pointsWeek);?>
}];
$.plot($("#week"), dataWeek, options);
var dataOverall = [{
color: "rgb(212,62, 48)",
data: <?php echo json_encode($points);?>
}];
$.plot($("#overall"), dataOverall, options);
});
</script>
</body>
</html>