199 lines
6.2 KiB
PHP
199 lines
6.2 KiB
PHP
<?php
|
|
|
|
// two-level sort for timezones.
|
|
|
|
if(! function_exists('timezone_cmp')) {
|
|
function timezone_cmp($a, $b) {
|
|
if(strstr($a,'/') && strstr($b,'/')) {
|
|
if ( t($a) == t($b)) return 0;
|
|
return ( t($a) < t($b)) ? -1 : 1;
|
|
}
|
|
if(strstr($a,'/')) return -1;
|
|
if(strstr($b,'/')) return 1;
|
|
if ( t($a) == t($b)) return 0;
|
|
return ( t($a) < t($b)) ? -1 : 1;
|
|
}}
|
|
|
|
// emit a timezone selector grouped (primarily) by continent
|
|
|
|
if(! function_exists('select_timezone')) {
|
|
function select_timezone($current = 'America/Los_Angeles') {
|
|
|
|
$timezone_identifiers = DateTimeZone::listIdentifiers();
|
|
|
|
$o ='<select id="timezone_select" name="timezone">';
|
|
|
|
usort($timezone_identifiers, 'timezone_cmp');
|
|
$continent = '';
|
|
foreach($timezone_identifiers as $value) {
|
|
$ex = explode("/", $value);
|
|
if(count($ex) > 1) {
|
|
if($ex[0] != $continent) {
|
|
if($continent != '')
|
|
$o .= '</optgroup>';
|
|
$continent = $ex[0];
|
|
$o .= '<optgroup label="' . t($continent) . '">';
|
|
}
|
|
if(count($ex) > 2)
|
|
$city = substr($value,strpos($value,'/')+1);
|
|
else
|
|
$city = $ex[1];
|
|
}
|
|
else {
|
|
$city = $ex[0];
|
|
if($continent != t('Miscellaneous')) {
|
|
$o .= '</optgroup>';
|
|
$continent = t('Miscellaneous');
|
|
$o .= '<optgroup label="' . t($continent) . '">';
|
|
}
|
|
}
|
|
$city = str_replace('_', ' ', t($city));
|
|
$selected = (($value == $current) ? " selected=\"selected\" " : "");
|
|
$o .= "<option value=\"$value\" $selected >$city</option>";
|
|
}
|
|
$o .= '</optgroup></select>';
|
|
return $o;
|
|
}}
|
|
|
|
// General purpose date parse/convert function.
|
|
// $from = source timezone
|
|
// $to = dest timezone
|
|
// $s = some parseable date/time string
|
|
// $fmt = output format
|
|
|
|
if(! function_exists('datetime_convert')) {
|
|
function datetime_convert($from = 'UTC', $to = 'UTC', $s = 'now', $fmt = "Y-m-d H:i:s") {
|
|
|
|
// Slight hackish adjustment so that 'zero' datetime actually returns what is intended
|
|
// otherwise we end up with -0001-11-30 ...
|
|
// add 32 days so that we at least get year 00, and then hack around the fact that
|
|
// months and days always start with 1.
|
|
|
|
if(substr($s,0,10) == '0000-00-00') {
|
|
$d = new DateTime($s . ' + 32 days', new DateTimeZone('UTC'));
|
|
return str_replace('1','0',$d->format($fmt));
|
|
}
|
|
|
|
$d = new DateTime($s, new DateTimeZone($from));
|
|
$d->setTimeZone(new DateTimeZone($to));
|
|
return($d->format($fmt));
|
|
}}
|
|
|
|
// wrapper for date selector, tailored for use in birthday fields
|
|
|
|
function dob($dob) {
|
|
list($year,$month,$day) = sscanf($dob,'%4d-%2d-%2d');
|
|
$y = datetime_convert('UTC',date_default_timezone_get(),'now','Y');
|
|
$o = datesel('',1920,$y,true,$year,$month,$day);
|
|
return $o;
|
|
}
|
|
|
|
|
|
// returns a date selector.
|
|
// $pre = prefix (if needed) for HTML name and class fields
|
|
// $ymin = first year shown in selector dropdown
|
|
// $ymax = last year shown in selector dropdown
|
|
// $allow_blank = allow an empty response on any field
|
|
// $y = already selected year
|
|
// $m = already selected month
|
|
// $d = already selected day
|
|
|
|
if(! function_exists('datesel')) {
|
|
function datesel($pre,$ymin,$ymax,$allow_blank,$y,$m,$d) {
|
|
|
|
$o = '';
|
|
$o .= "<select name=\"{$pre}year\" class=\"{$pre}year\" size=\"1\">";
|
|
if($allow_blank) {
|
|
$sel = (($y == '0000') ? " selected=\"selected\" " : "");
|
|
$o .= "<option value=\"0000\" $sel ></option>";
|
|
}
|
|
|
|
for($x = $ymax; $x >= $ymin; $x --) {
|
|
$sel = (($x == $y) ? " selected=\"selected\" " : "");
|
|
$o .= "<option value=\"$x\" $sel>$x</option>";
|
|
}
|
|
|
|
$o .= "</select> <select name=\"{$pre}month\" class=\"{$pre}month\" size=\"1\">";
|
|
for($x = 0; $x <= 12; $x ++) {
|
|
$sel = (($x == $m) ? " selected=\"selected\" " : "");
|
|
$y = (($x) ? $x : '');
|
|
$o .= "<option value=\"$x\" $sel>$y</option>";
|
|
}
|
|
|
|
$o .= "</select> <select name=\"{$pre}day\" class=\"{$pre}day\" size=\"1\">";
|
|
for($x = 0; $x <= 31; $x ++) {
|
|
$sel = (($x == $d) ? " selected=\"selected\" " : "");
|
|
$y = (($x) ? $x : '');
|
|
$o .= "<option value=\"$x\" $sel>$y</option>";
|
|
}
|
|
|
|
$o .= "</select>";
|
|
return $o;
|
|
}}
|
|
|
|
// implements "3 seconds ago" etc.
|
|
// based on $posted_date, (UTC).
|
|
// Results relative to current timezone
|
|
// Limited to range of timestamps
|
|
|
|
if(! function_exists('relative_date')) {
|
|
function relative_date($posted_date) {
|
|
|
|
$localtime = datetime_convert('UTC',date_default_timezone_get(),$posted_date);
|
|
|
|
$abs = strtotime($localtime);
|
|
$etime = time() - $abs;
|
|
|
|
if ($etime < 1) {
|
|
return t('less than a second ago');
|
|
}
|
|
|
|
$a = array( 12 * 30 * 24 * 60 * 60 => array( t('year'), t('years')),
|
|
30 * 24 * 60 * 60 => array( t('month'), t('months')),
|
|
7 * 24 * 60 * 60 => array( t('week'), t('weeks')),
|
|
24 * 60 * 60 => array( t('day'), t('days')),
|
|
60 * 60 => array( t('hour'), t('hours')),
|
|
60 => array( t('minute'), t('minutes')),
|
|
1 => array( t('second'), t('seconds'))
|
|
);
|
|
|
|
foreach ($a as $secs => $str) {
|
|
$d = $etime / $secs;
|
|
if ($d >= 1) {
|
|
$r = round($d);
|
|
return $r . ' ' . (($r == 1) ? $str[0] : $str[1]) . t(' ago');
|
|
}
|
|
}
|
|
}}
|
|
|
|
|
|
|
|
// Returns age in years, given a date of birth,
|
|
// the timezone of the person whose date of birth is provided,
|
|
// and the timezone of the person viewing the result.
|
|
// Why? Bear with me. Let's say I live in Mittagong, Australia, and my
|
|
// birthday is on New Year's. You live in San Bruno, California.
|
|
// When exactly are you going to see my age increase?
|
|
// A: 5:00 AM Dec 31 San Bruno time. That's precisely when I start
|
|
// celebrating and become a year older. If you wish me happy birthday
|
|
// on January 1 (San Bruno time), you'll be a day late.
|
|
|
|
function age($dob,$owner_tz = '',$viewer_tz = '') {
|
|
if(! intval($dob))
|
|
return 0;
|
|
if(! $owner_tz)
|
|
$owner_tz = date_default_timezone_get();
|
|
if(! $viewer_tz)
|
|
$viewer_tz = date_default_timezone_get();
|
|
|
|
$birthdate = datetime_convert('UTC',$owner_tz,$dob . ' 00:00:00+00:00','Y-m-d');
|
|
list($year,$month,$day) = explode("-",$birthdate);
|
|
$year_diff = datetime_convert('UTC',$viewer_tz,'now','Y') - $year;
|
|
$curr_month = datetime_convert('UTC',$viewer_tz,'now','m');
|
|
$curr_day = datetime_convert('UTC',$viewer_tz,'now','d');
|
|
|
|
if(($curr_month < $month) || (($curr_month == $month) && ($curr_day < $day)))
|
|
$year_diff--;
|
|
return $year_diff;
|
|
}
|