A PHP script for converting between different datetimes
This script converts a Unix timestamp (Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT)) to the International Standard ISO 8601 date and time notation (YYYY-MM-DD hh:mm:ss) and vice versa. I find it useful for verifying datetimes.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Unix <-> DateTime</title>
<style type="text/css">
#wrapper {
width: 600px;
margin: 20px auto 0;
font: 1.2em Verdana, Arial, sans-serif;
}
input {
font-size: 1em;
}
#submit {
padding: 4px 8px;
}
</style>
</head>
<body>
<div id="wrapper">
<?php
$convert = htmlspecialchars($_GET['convert'], ENT_QUOTES);
$timestamp = $_POST['timestamp'];
$datetime = $_POST['datetime'];
if ($timestamp) {
echo "International Standard ISO 8601 date and time notation:<br />";
echo date('Y-m-d H:i:s', $timestamp) . " (YYYY-MM-DD hh:mm:ss)<br />";
echo "<br />";
echo "US Time:<br />";
echo date('n/d/y h:i:s A', $timestamp);
} elseif ($datetime) {
echo "Unix Timestamp: " . $newdatetime = strtotime($datetime);
echo "<br />";
echo "<br />";
echo "International Standard ISO 8601 date and time notation:<br />";
echo date('Y-m-d H:i:s', $newdatetime) . " (YYYY-MM-DD hh:mm:ss)<br />";
echo "<br />";
echo "US Time:<br />";
echo date('n/d/y h:i:s A', $newdatetime);
} else { ?>
<h1>Timestamp Conversions</h1>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<table cellpadding="2">
<tr>
<td>Unix Timestamp</td>
<td><input type="text" name="timestamp" id="timestamp" value="" size="30" tabindex="1" /></td>
</tr>
<tr>
<td>Any Date/Time</td>
<td><input type="text" name="datetime" id="datetime" value="" size="30" tabindex="1" /></td>
</tr>
<tr>
<td></td>
<td><input type="submit" id="submit" value="Convert" tabindex="5" /></td>
</tr>
</table>
</form>
<?php } ?>
</div>
</body>
</html>
