#19719 [NoF->WFx]: wrong week number of year at year end / beginn
| From: | hholzgra@php.net | Date: | Fri, 06 Aug 2004 16:51:49 +0000 |
| Subject: | #19719 [NoF->WFx]: wrong week number of year at year end / beginn | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-64197@lists.php.net to get a copy of this message | ||
ID: 19719
Updated by: hholzgra@php.net
Reported By: martin dot adler at continum dot net
-Status: No Feedback
+Status: Wont fix
Bug Type: Calendar related
Operating System: FreeBSD 4.3-RELEASE
PHP Version: 4.2.2
New Comment:
date() is not very clever when it comes to week counts.
You should use strftime() instead in this case, this supports
the ISO week number conventions as usually used in Germany
using the %V and %G format modifiers:
strftime("Week %V of Year %G", mktime(12,0,0,1,1,2000));
-> Week 52 of Year 1999
strftime("Week %V of Year %G", mktime(12,0,0,1,1,2004));
-> Week 01 of Year 2004
Previous Comments:
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[2002-10-20 23:30:19] sniper@php.net
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Open". Thank you.
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[2002-10-02 10:45:28] rasmus@php.net
Please provide a *short* script that illustrates this problem. Sounds
like you could have illustrated this with a 1-line script.
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[2002-10-02 10:43:53] martin dot adler at continum dot net
The date-function doesn't return the korrect
week number of the year.
The 31'rd December 2001 is a Monday but belongs to
the first Week in 2002.
The Rule is:
The first January belongs to the first week of year,
if this day is a Monday,Tuesday,Wednesday or Thursday.
################## Script ###########################
<?
$cal = new calendar(mktime(0,0,0,1,1,2002));
?>
<table cellspacing="1" cellpadding="5" border="0">
<tr>
<td bgcolor="#e0e0e0"><b>KW</b></td>
<td bgcolor="#e0e0e0"><b>Mo</b></td>
<td bgcolor="#e0e0e0"><b>Di</b></td>
<td bgcolor="#e0e0e0"><b>Mi</b></td>
<td bgcolor="#e0e0e0"><b>Do</b></td>
<td bgcolor="#e0e0e0"><b>Fr</b></td>
<td bgcolor="#e0e0e0"><b>Sa</b></td>
<td bgcolor="#e0e0e0"><b>So</b></td>
</tr>
<tr>
<? while($day_arr = $cal->pre_to_post_fetch_days()) {
if($day_arr['day_of_week'] == 1)
echo '<td
bgcolor="#e0e0e0">'.$day_arr[calendarweek].'</td>';?>
<td bgcolor="#e0e0e0"><?=$day_arr['day_of_month']?></td>
<? echo !$day_arr['day_of_week'] && $day_arr['day_of_month'] <
$cal->last_day?"\n </tr>\n <tr>\n":'';
}
?>
</tr>
</table>
<?
$cal->reset_fetch_days();
echo '<pre>';
print_r($cal);
echo '<br><br>';
while($mycal = $cal->pre_to_post_fetch_days())
{
print_r($mycal);
}
echo '</pre>';
/**********************************************************/
// Beim instanziiren der calendar-Klasse kann
// als Argument ein Unix-Timestamp übergeben werden.
// wenn nicht wird ein Timestamp des aktuellen Datums
// verwendet.
class calendar
{
// Eigenschaften der Klasse
var $year, $month, $day;
var $monthname,$monthname_de,$monthnamecut,$monthnamecut_de;
var $calendarweek;
var $stamp;
var $last_day;
// Zählervariable für die Funktion fetch_days()
var $cnt = 0;
// Adapter für die Umwandlung von einer Woche, welche mit dem
// Sonntag beginnt in eine Woche, welche mit dem Montag beginnt
var $adapter = array(0 => 6, 1 => 0,
2 => 1, 3 => 2,
4 => 3, 5 => 4,
6 => 5);
// Diese Eigenschaften dienen zur Berechnung der Tage,
// die zu einer vollständigen Woche aber nicht zum
// Monat gehören
var $pre = 0, $post = 0;
// Konstruktor für die Initialisierung der Eigenschaften
function calendar($stamp = 0)
{
$months_de = array('Januar', 'Februar',
'März', 'April',
'Mai', 'Juni',
'Juli', 'August',
'September', 'Oktober',
'November', 'Dezember');
$this->stamp = $stamp?$stamp:date('U');
$this->day = date('j',$this->stamp);
$this->month = date('n',$this->stamp);
$this->year = date('Y',$this->stamp);
$this->monthname = date('F',$this->stamp);
$this->monthnamecut = date('M',$this->stamp);
$this->monthname_de = $months_de[date('n',$this->stamp)-1];
$this->monthnamecut_de = substr($this->monthname_de,0,3);
$this->calendarweek = date('W',$this->stamp);
$this->last_day = date('t',$this->stamp);
$this->pre =
$this->adapter[date('w',mktime(0,0,0,date('n',$this->stamp),1,$this->year))];
$this->post = 6 -
$this->adapter[date('w',mktime(0,0,0,date('n',$this->stamp),$this->last_day,$this->year))];
}
// Methode zur Hilfe für die einfache Konstrucktion
// eines Kalenders mit einer while-Schleife
function fetch_days()
{
if(++$this->cnt <= $this->last_day)
return
$this->day_info(mktime(0,0,0,$this->month,$this->cnt,$this->year));
else
return 0;
}
function pre_to_post_fetch_days()
{
if(++$this->cnt - $this->pre <= $this->last_day + $this->post)
return $this->day_info(mktime(0,0,0,$this->month,$this->cnt -
$this->pre,$this->year));
else
return 0;
}
// Zurücksetzen der Eigenschaft "cnt" um ein erneutes aufrufen
// der Methode "fetch_days()" zu ermöglichen
function reset_fetch_days() {
$this->cnt = 0;
}
// Methode zur Abfrage von Informationen eines Tages
function day_info($stamp = 0)
{
$stamp = $stamp?$stamp:$this->stamp;
$weekdays_de = array('Sonntag',
'Montag',
'Dienstag',
'Mittwoch',
'Donnerstag',
'Freitag',
'Samstag');
return array('day_of_week' => date('w',$stamp),
'day_of_month' => date('j',$stamp),
'day_of_year' => date('z',$stamp)+1,
'weekday' => date('l',$stamp),
'weekday_de' => $weekdays_de[date('w',$stamp)],
'weekdaycuts' => date('D',$stamp),
'weekdaycuts_de' =>
substr($weekdays_de[date('w',$stamp)],0,2),
'calendarweek' => date('W',$stamp),
'timestamp' => $stamp);
}
}
?>
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Edit this bug report at http://bugs.php.net/?id=19719&edit=1