Applications often allow users to select their timezones for reporting the proper time properly. Here is a quick function that can be used to generate a dropdown list of timezones that is easy to read and understand.
<?php
function get_timezones()
{
$o = array();
$t_zones = timezone_identifiers_list();
foreach($t_zones as $a)
{
$t = '';
try
{
//this throws exception for 'US/Pacific-New'
$zone = new DateTimeZone($a);
$seconds = $zone->getOffset( new DateTime("now" , $zone) );
$hours = sprintf( "%+02d" , intval($seconds/3600));
$minutes = sprintf( "%02d" , ($seconds%3600)/60 );
$t = $a ." [ $hours:$minutes ]" ;
$o[$a] = $t;
}
//exceptions must be catched, else a blank page
catch(Exception $e)
{
//die("Exception : " . $e->getMessage() . '<br />');
//what to do in catch ? , nothing just relax
}
}
ksort($o);
return $o;
}
$o = get_timezones();
?>
<html>
<body>
<select name="time_zone">
<?php
foreach($o as $tz => $label)
{
echo "<option value="$tz">$label</option>";
}
?>
</select>
</body>
</html>
Awesome!!!!! Exactly what I needed. Thank you for taking the time to build/post this!