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aanton/timezones.php

Created April 4, 2014 07:46
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Test timezones in PHP
Raw
timezones.php
<?php
$serverTimezone = 'Europe/Madrid';
$timezones = ['America/Los_Angeles', 'America/Mexico_City', 'Atlantic/Canary', 'Europe/Madrid'];
$tmst = time();
$datetimeNow = new DateTime('now', new DateTimeZone($serverTimezone));
$datetimes = array();
foreach ($timezones as $timezone)
{
$datetime = new DateTime();
$datetime->setTimestamp($tmst);
$datetime->setTimezone(new DateTimeZone($timezone));
$datetimes[] = $datetime;
}
// Client timestamp demo
// Input parameters: tmst1
$tmst1 = $_GET['tmst1'] ?: $tmst;
$datetimes1 = array();
foreach ($timezones as $timezone)
{
$datetime = new DateTime();
$datetime->setTimestamp($tmst1);
$datetime->setTimezone(new DateTimeZone($timezone));
$datetimes1[] = $datetime;
}
// Client date demo
// Input parameters: date2, timezone2
$date2 = $_GET['date2'] ?: $datetimeNow->format('Y-m-d H:i:s');
$timezone2 = $_GET['timezone2'] ?: $serverTimezone;
$datetime2 = new DateTime($date2, new DateTimeZone($timezone2));
$tmst2 = $datetime2->getTimestamp();
$datetimes2 = array();
foreach ($timezones as $timezone)
{
$datetime = new DateTime();
$datetime->setTimestamp($tmst2);
$datetime->setTimezone(new DateTimeZone($timezone));
$datetimes2[] = $datetime;
}
?>
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Timezones</title>
</head>
<body>
<h1>Timezones</h1>
<a href="timezones.php">Reset</a>
<h2>Current timestamp</h2>
<p>Timestamp: <?php echo $tmst; ?></p>
<ul>
<?php foreach ($datetimes as $datetime): ?>
<li><?php echo $datetime->format(DateTime::ISO8601); ?> (<?php echo $datetime->format('e'); ?>)</li>
<?php endforeach; ?>
</ul>
<hr>
<h2>Client timestamp demo</h2>
<form action="timezones.php" method="GET">
<label>Timestamp: <input type="text" name="tmst1" value="<?php echo $tmst1; ?>" /></label>
<input type="hidden" name="date2" value="<?php echo $date2; ?>" /><!-- keep date demo -->
<input type="hidden" name="timezone2" value="<?php echo $timezone2; ?>" /><!-- keep date demo -->
<input type="submit" value="Submit" />
</form>
<ul>
<?php foreach ($datetimes1 as $datetime): ?>
<li><?php echo $datetime->format(DateTime::ISO8601); ?> (<?php echo $datetime->format('e'); ?>)</li>
<?php endforeach; ?>
</ul>
<h2>Client date demo</h2>
<form action="timezones.php" method="GET">
<label>
Date:
<input type="text" name="date2" value="<?php echo $date2; ?>" />
</label>
<label>
Timezone:
<select name="timezone2">
<?php foreach ($timezones as $timezone): ?>
<option value="<?php echo $timezone; ?>" <?php echo $timezone === $timezone2 ? 'selected' : ''; ?>><?php echo $timezone; ?></option>
<?php endforeach; ?>
</select>
</label>
<input type="hidden" name="tmst1" value="<?php echo $tmst1; ?>" /><!-- keep timestamp demo -->
<input type="submit" value="Submit" />
</form>
<p>Timestamp: <?php echo $tmst2; ?></p>
<ul>
<?php foreach ($datetimes2 as $datetime): ?>
<li>
<?php if ($datetime->format('e') === $timezone2): ?><strong><? endif; ?>
<?php echo $datetime->format(DateTime::ISO8601); ?> (<?php echo $datetime->format('e'); ?>)
<?php if ($datetime->format('e') === $timezone2): ?></strong><? endif; ?>
</li>
<?php endforeach; ?>
</ul>
</body>
</html>
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