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jkuip/countdown.php

Created September 18, 2015 15:18
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Simple PHP countdown
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countdown.php
<!DOCTYPE html>
<html>
<head>
<title>Countdown</title>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet">
<link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.4.1/css/bootstrap-datepicker.min.css" rel="stylesheet">
<script src="http://code.jquery.com/jquery-1.11.3.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.4.1/js/bootstrap-datepicker.min.js"></script>
<script type="text/javascript">
$(document).ready(function(e)
{
// initalize datepicker (https://github.com/eternicode/bootstrap-datepicker)
$('#datepicker').datepicker(
{
orientation: "top auto",
autoclose: true
});
});
</script>
</head>
<body>
<div class="container" style="margin-top: 50px">
<?php
// If the submit button has been pressed
if(isset($_POST['submit']))
{
// get month, day and year from form field (mm/dd/yyyy)
$date = explode('/', $_POST['date']);
$month = $date[0];
$day = $date[1];
$year = $date[2];
// Get future seconds (hour, minute, second, month, day, year);
$future = mktime(00, 00, 00, $month, $day, $year);
// Get current seconds since Unix Epock (midnight on January 1, 1970)
$current = time();
// Calculate difference of seconds
$difference = $future - $current;
// Calculate number of days
$numdays = ceil($difference / 86400);
// Check if the event is occurring today
if($numdays > 0)
{
echo "<h1>Only $numdays days until {$_POST['event']}!</h1>";
} elseif ($numdays == 0) {
echo "<h1>{$_POST['event']} is today!</h1>";
} else {
echo "<h1>{$_POST['event']} already happened!</h1>";
}
}
?>
<!-- Countdown Form -->
<form method="post" action="countdown.php">
<div class="form-group">
<label>Event Name:</label>
<input name="event" type="text" class="form-control" />
</div>
<div class="form-group">
<label>Date of Event:</label>
<input id="datepicker" name="date" type="text" class="form-control" />
</div>
<input name="submit" type="submit" value="Calculate Days" class="btn btn-primary" />
</form>
</div>
</body>
</html>
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