<?php
+// two-level sort for timezones.
+
if(! function_exists('timezone_cmp')) {
function timezone_cmp($a, $b) {
if(strstr($a,'/') && strstr($b,'/')) {
- if ($a == $b) return 0;
- return ($a < $b) ? -1 : 1;
+ if ( t($a) == t($b)) return 0;
+ return ( t($a) < t($b)) ? -1 : 1;
}
if(strstr($a,'/')) return -1;
if(strstr($b,'/')) return 1;
return ( t($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') {
}
else {
$city = $ex[0];
- if($continent != 'Miscellaneous') {
+ if($continent != t('Miscellaneous')) {
$o .= '</optgroup>';
- $continent = 'Miscellaneous';
+ $continent = t('Miscellaneous');
$o .= '<optgroup label="' . t($continent) . '">';
}
}
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") {
- $d = new DateTime($s, new DateTimeZone($from));
- $d->setTimeZone(new DateTimeZone($to));
- return($d->format($fmt));
+
+ // 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');
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 .= "<option value=\"0000\" $sel ></option>";
}
- for($x = $ymax; $x >= $ymin; $x --) {
- $sel = (($x == $y) ? " selected=\"selected\" " : "");
- $o .= "<option value=\"$x\" $sel>$x</option>";
+ if($ymax > $ymin) {
+ for($x = $ymax; $x >= $ymin; $x --) {
+ $sel = (($x == $y) ? " selected=\"selected\" " : "");
+ $o .= "<option value=\"$x\" $sel>$x</option>";
+ }
+ }
+ else {
+ 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; $x ++) {
+ for($x = (($allow_blank) ? 0 : 1); $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; $x ++) {
+ for($x = (($allow_blank) ? 0 : 1); $x <= 31; $x ++) {
$sel = (($x == $d) ? " selected=\"selected\" " : "");
$y = (($x) ? $x : '');
$o .= "<option value=\"$x\" $sel>$y</option>";
return $o;
}}
+if(! function_exists('timesel')) {
+function timesel($pre,$h,$m) {
+
+ $o = '';
+ $o .= "<select name=\"{$pre}hour\" class=\"{$pre}hour\" size=\"1\">";
+ for($x = 0; $x < 24; $x ++) {
+ $sel = (($x == $h) ? " selected=\"selected\" " : "");
+ $o .= "<option value=\"$x\" $sel>$x</option>";
+ }
+ $o .= "</select> : <select name=\"{$pre}minute\" class=\"{$pre}minute\" size=\"1\">";
+ for($x = 0; $x < 60; $x ++) {
+ $sel = (($x == $m) ? " selected=\"selected\" " : "");
+ $o .= "<option value=\"$x\" $sel>$x</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) {
}}
+
+// 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;
$year_diff--;
return $year_diff;
}
+
+
+
+// Get days in month
+// get_dim($year, $month);
+// returns number of days.
+// $month[1] = 'January';
+// to match human usage.
+
+if(! function_exists('get_dim')) {
+function get_dim($y,$m) {
+
+ $dim = array( 0,
+ 31, 28, 31, 30, 31, 30,
+ 31, 31, 30, 31, 30, 31);
+
+ if($m != 2)
+ return $dim[$m];
+ if(((($y % 4) == 0) && (($y % 100) != 0)) || (($y % 400) == 0))
+ return 29;
+ return $dim[2];
+}}
+
+
+// Returns the first day in month for a given month, year
+// get_first_dim($year,$month)
+// returns 0 = Sunday through 6 = Saturday
+// Months start at 1.
+
+if(! function_exists('get_first_dim')) {
+function get_first_dim($y,$m) {
+ $d = sprintf('%04d-%02d-01 00:00', intval($y), intval($m));
+ return datetime_convert('UTC','UTC',$d,'w');
+}}
+
+// output a calendar for the given month, year.
+// if $links are provided (array), e.g. $links[12] => 'http://mylink' ,
+// date 12 will be linked appropriately. Today's date is also noted by
+// altering td class.
+// Months count from 1.
+
+
+// TODO: provide (prev,next) links, define class variations for different size calendars
+
+
+if(! function_exists('cal')) {
+function cal($y = 0,$m = 0, $links = false, $class='') {
+
+
+ // month table - start at 1 to match human usage.
+
+ $mtab = array(' ',
+ 'January','February','March',
+ 'April','May','June',
+ 'July','August','September',
+ 'October','November','December'
+ );
+
+ $thisyear = datetime_convert('UTC',date_default_timezone_get(),'now','Y');
+ $thismonth = datetime_convert('UTC',date_default_timezone_get(),'now','m');
+ if(! $y)
+ $y = $thisyear;
+ if(! $m)
+ $m = intval($thismonth);
+
+ $dn = array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday');
+ $f = get_first_dim($y,$m);
+ $l = get_dim($y,$m);
+ $d = 1;
+ $dow = 0;
+ $started = false;
+
+ if(($y == $thisyear) && ($m == $thismonth))
+ $tddate = intval(datetime_convert('UTC',date_default_timezone_get(),'now','j'));
+
+ $str_month = day_translate($mtab[$m]);
+ $o = '<table class="calendar' . $class . '">';
+ $o .= "<caption>$str_month $y</caption><tr>";
+ for($a = 0; $a < 7; $a ++)
+ $o .= '<th>' . mb_substr(day_translate($dn[$a]),0,3,'UTF-8') . '</th>';
+ $o .= '</tr><tr>';
+
+ while($d <= $l) {
+ if(($dow == $f) && (! $started))
+ $started = true;
+ $today = (((isset($tddate)) && ($tddate == $d)) ? "class=\"today\" " : '');
+ $o .= "<td $today>";
+ $day = str_replace(' ',' ',sprintf('%2.2d', $d));
+ if($started) {
+ if(is_array($links) && isset($links[$d]))
+ $o .= "<a href=\"{$links[$d]}\">$day</a>";
+ else
+ $o .= $day;
+ $d ++;
+ }
+ else
+ $o .= ' ';
+ $o .= '</td>';
+ $dow ++;
+ if(($dow == 7) && ($d <= $l)) {
+ $dow = 0;
+ $o .= '</tr><tr>';
+ }
+ }
+ if($dow)
+ for($a = $dow; $a < 7; $a ++)
+ $o .= '<td> </td>';
+ $o .= '</tr></table>'."\r\n";
+
+ return $o;
+}}