strftime

(PHP 4, PHP 5)

strftime Formatiert eine Zeit-/Datumsangabe nach den lokalen Einstellungen

Beschreibung:

string strftime ( string $format [, int $ Timestamp ] )

Gibt einen String zurück, der den angegebenen Formatierungs-Merkmalen entspricht. Dabei wird der gegebene Timestamp/ Zeitstempel oder - falls dieser fehlt - die momentane lokale Zeit benutzt. Der Monats- und Wochentagsname wird entsprechend des per setlocale() eingestellten Wertes gesetzt.

Nachfolgend die im Formatierungsstring gültigen / bekannten Platzhalter:

  • %a - abgekürzter Name des Wochentages, abhängig von der gesetzten Umgebung
  • %A - ausgeschriebener Name des Wochentages, abhängig von der gesetzten Umgebung
  • %b - abgekürzter Name des Monats, abhängig von der gesetzten Umgebung
  • %B - ausgeschriebener Name des Monats, abhängig von der gesetzten Umgebung
  • %c - Wiedergabewerte für Datum und Zeit, abhängig von der gesetzten Umgebung
  • %C - Jahrhundert (Jahr geteilt durch 100, gekürzt auf Integer, Wertebereich 00 bis 99)
  • %d - Tag des Monats als Zahl (Bereich 01 bis 31)
  • %D - so wie %m/%d/%y
  • %e - Tag des Monats als Dezimal-Wert, einstelligen Werten wird ein Leerzeichen voran gestellt (Wertebereich ´ 1´ bis ´31´)
  • %g - wie %G, aber ohne Jahrhundert.
  • %G - Das vierstellige Jahr entsprechend der ISO Wochennummer (siehe %V). Das gleiche Format und der gleiche Wert wie bei %Y. Besonderheit: entspricht die ISO Wochennummer dem vorhergehenden oder folgenden Jahr, wird dieses Jahr verwendet.
  • %h - so wie %b
  • %H - Stunde als Zahl im 24-Stunden-Format (Bereich 00 bis 23)
  • %I - Stunde als Zahl im 12-Stunden-Format (Bereich 01 bis 12)
  • %j - Tag des Jahres als Zahl (Bereich 001 bis 366)
  • %m - Monat als Zahl (Bereich 01 bis 12)
  • %M - Minute als Dezimal-Wert
  • %n - neue Zeile
  • %p - entweder `am' oder `pm' (abhängig von der gesetzten Umgebung) oder die entsprechenden Zeichenketten der gesetzten Umgebung
  • %r - Zeit im Format a.m. oder p.m.
  • %R - Zeit in der 24-Stunden-Formatierung
  • %S - Sekunden als Dezimal-Wert
  • %t - Tabulator
  • %T - aktuelle Zeit, genau wie %H:%M:%S
  • %u - Tag der Woche als Dezimal-Wert [1,7], dabei ist 1 der Montag.
    Warnung

    Sun Solaris scheint mit dem Sonntag als 1 zu starten, obwohl ISO 9889:1999 (der aktuelle C Standard) klar festlegt, dass es der Montag sein sollte.

  • %U - Nummer der Woche des aktuellen Jahres als Dezimal-Wert, beginnend mit dem ersten Sonntag als erstem Tag der ersten Woche.
  • %V - Kalenderwoche (nach ISO 8601:1988) des aktuellen Jahres. Als Dezimal-Zahl mit dem Wertebereich 01 bis 53, wobei die Woche 01 die erste Woche mit mindestens 4 Tagen im aktuellen Jahr ist. Die Woche beginnt montags (nicht sonntags). (Benutzen Sie %G or %g für die Jahreskomponente, die der Wochennummer für den gegebenen Timestamp entspricht.)
  • %w - Wochentag als Dezimal-Wert, Sonntag ist 0
  • %W - Nummer der Woche des aktuellen Jahres, beginnend mit dem ersten Montag als erstem Tag der ersten Woche.
  • %x - bevorzugte Datumswiedergabe (ohne Zeit), abhängig von der gesetzten Umgebung.
  • %X - bevorzugte Zeitwiedergabe (ohne Datum), abhängig von der gesetzten Umgebung.
  • %y - Jahr als 2-stellige-Zahl (Bereich 00 bis 99)
  • %Y - Jahr als 4-stellige-Zahl inklusive des Jahrhunderts
  • %Z - Zeitzone, Name oder eine Abkürzung
  • %% - ein %-Zeichen

Hinweis:

Es ist durchaus möglich, dass Ihre C-Bibliothek nicht alle angegebenen Formatierungszeichen erkennt. In diesem Fall werden diese Zeichen von der PHP-Funktion strftime() nicht unterstützt. Zusätzlich unterstützen nicht alle Plattformen negative Werte eines Timestamps, deshalb könnte der Wertebereich eines Datums durch den Beginn der Unix Epoche begrenzt sein. Das bedeutet, dass z.B. %e, %T, %R und %D (und vielleicht noch weitere) und Zeitangaben vor dem Jan 1, 1970 auf Windowssystemen, einigen Linuxdisrtibutionen und einigen anderen Betriebssytemen nicht funktionieren. Für Windowsbetriebssysteme finden Sie eine komplette Übersicht der gültigen / bekannten Platzhalter im Formatierungsstring auf dieser » MSDN Webseite.

Beispiel #1 strftime() locale Beispiel

<?php
setlocale
(LC_TIME"C");
echo 
strftime("%A");
setlocale(LC_TIME"fi_FI");
echo 
strftime(" in Finnish is %A,");
setlocale(LC_TIME"fr_FR");
echo 
strftime(" in French %A and");
setlocale(LC_TIME"de_DE");
echo 
strftime(" in German %A.\n");
?>
Dieses Beispiel funktioniert nur, wenn auf Ihrem System die entsprechenden Locale-Codes installiert sind.

Hinweis: %G und %V basieren auf ISO 8601:1988 Wochennummern und können unerwartete (obwohl korrekte) Ergebnisse liefern, wenn Sie das Nummernsystem nicht gründlich verstehen. Sehen Sie weiter oben bei %V nach und beachten Sie die folgenden Beispiele.

Beispiel #2 ISO 8601:1988 Wochennummer Beispiel

<?php
/*     December 2002 / January 2003
ISOWk  M   Tu  W   Thu F   Sa  Su
----- ----------------------------
51     16  17  18  19  20  21  22
52     23  24  25  26  27  28  29
1      30  31   1   2   3   4   5
2       6   7   8   9  10  11  12
3      13  14  15  16  17  18  19   */

// Ausgabe: 12/28/2002 - %V,%G,%Y = 52,2002,2002
echo "12/28/2002 - %V,%G,%Y = " strftime("%V,%G,%Y"strtotime("12/28/2002")) . "\n";

// Ausgabe: 12/30/2002 - %V,%G,%Y = 1,2003,2002
echo "12/30/2002 - %V,%G,%Y = " strftime("%V,%G,%Y"strtotime("12/30/2002")) . "\n";

// Ausgabe: 1/3/2003 - %V,%G,%Y = 1,2003,2003
echo "1/3/2003 - %V,%G,%Y = " strftime("%V,%G,%Y",strtotime("1/3/2003")) . "\n";

// Ausgabe: 1/10/2003 - %V,%G,%Y = 2,2003,2003
echo "1/10/2003 - %V,%G,%Y = " strftime("%V,%G,%Y",strtotime("1/10/2003")) . "\n";



/*     December 2004 / January 2005
ISOWk  M   Tu  W   Thu F   Sa  Su
----- ----------------------------
51     13  14  15  16  17  18  19
52     20  21  22  23  24  25  26
53     27  28  29  30  31   1   2
1       3   4   5   6   7   8   9
2      10  11  12  13  14  15  16   */

// Ausgabe: 12/23/2004 - %V,%G,%Y = 52,2004,2004
echo "12/23/2004 - %V,%G,%Y = " strftime("%V,%G,%Y",strtotime("12/23/2004")) . "\n";

// Ausgabe: 12/31/2004 - %V,%G,%Y = 53,2004,2004
echo "12/31/2004 - %V,%G,%Y = " strftime("%V,%G,%Y",strtotime("12/31/2004")) . "\n";

// Ausgabe: 1/2/2005 - %V,%G,%Y = 53,2004,2005
echo "1/2/2005 - %V,%G,%Y = " strftime("%V,%G,%Y",strtotime("1/2/2005")) . "\n";

// Ausgabe: 1/3/2005 - %V,%G,%Y = 1,2005,2005
echo "1/3/2005 - %V,%G,%Y = " strftime("%V,%G,%Y",strtotime("1/3/2005")) . "\n";

?>

Siehe auch setlocale(), mktime() und die »  Open Group Spezifikation von strftime().

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User Contributed Notes 29 notes

up
3
eric dot brison at anakeen dot com
4 months ago
strftime not format microsecond (decimal part of seconds).
This function add '%f' key in format to render microsecond (6 digits) also.

<?php
/**
* @param string $format strftime format
* @param float $microtime time with microsecond
* @return string
*/
function strftimeu($format, $microtime)
{
    if (
preg_match('/^[0-9]*\\.([0-9]+)$/', $microtime, $reg)) {
       
$decimal = substr(str_pad($reg[1], 6, "0"), 0, 6);
    } else {
       
$decimal = "000000";
    }
   
$format = preg_replace('/(%f)/', $decimal, $format);
    return
strftime($format, $microtime);
}
?>

Example :
<?php
$now
=microtime(true);
printf("REF:%s\n",$now );
printf("FMT:%s\n", strftimeu('%H:%M:%S.%f', $now));
?>

Results are :
REF:1393937303.6615
FMT:13:48:23.661500
FMT:13h 48min 23s 661500µs

Note : Here the decimal part of microtime is on 4 digits due to default precision
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2
ciprianmp at yahoo dot com
3 years ago
This worked for me to distinguish between windows and linux, for stripping leading zeros from days/months in the short formats (like for Czech):
stristr(PHP_OS,"win") ? "%#d.%#m.%Y" : "%-d.%-m.%Y"
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2
lamb dot dan at gmail dot com
5 years ago
<?php
/*
*    This function figures out what fiscal year a specified date is in.
*    $inputDate - the date you wish to find the fiscal year for. (12/4/08)
*    $fyStartDate - the month and day your fiscal year starts. (7/1)
*    $fyEndDate - the month and day your fiscal year ends. (6/30)
*    $fy - returns the correct fiscal year
*/
function calculateFiscalYearForDate($inputDate, $fyStart, $fyEnd){
   
$date = strtotime($inputDate);
   
$inputyear = strftime('%Y',$date);
       
   
$fystartdate = strtotime($fyStart.$inputyear);
   
$fyenddate = strtotime($fyEnd.$inputyear);

    if(
$date < $fyenddate){
       
$fy = intval($inputyear);
    }else{
       
$fy = intval(intval($inputyear) + 1);
    }
   
    return
$fy;
   
}

// my fiscal year starts on July,1 and ends on June 30, so...
echo calculateFiscalYearForDate("5/15/08","7/1","6/30");
// returns 2008

echo calculateFiscalYearForDate("12/1/08","7/1","6/30");
// returns 2009
?>
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4
Bondas Timotei
3 years ago
If strange characters are returned use utf8_encode(strftime()) for UTF-8 characters
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2
denis at spiralsolutions dot com
7 years ago
(in addition to Andy's post)
To get a RFC 2822 date (used in RSS) of the current local time :

echo strftime ("%a, %d %b %Y %H:%M:%S %z") ;

Note: option %z / %Z - work different on Windows platform, for example
output of this code line can be:
Thu, 02 Nov 2006 09:54:59 Jerusalem Standard Time (on Windows)
Thu, 02 Nov 2006 09:54:59 +0200                   (on Linux)

[red. It is much smarter to use date(DATE_RSS); here]
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2
Jon Keating
8 years ago
Under windows if you are using Japanese version, you must use the following code:

setlocale(LC_ALL, "Japanese_Japan.20932") for EUC
setlocale(LC_ALL, "Japanese_Japan.932") for SJIS

I found the following page that helped me with this issue:
http://moodle.org/mod/forum/discuss.php?d=8329
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2
szilagyigabor at yahoo dot com
4 years ago
This is that worked with UTF-8 encoding on Linux server, with right accents:
<?php
setlocale
(LC_ALL, 'hu_HU.UTF8');
echo(
strftime('%Y. %B %d. %A'));
?>

Output is:
2009. november 02. hétfő

Also, this one can be used, if not utf-8 preferred:
<?php
setlocale
(LC_ALL, 'hu_HU.ISO8859-2');
?>

UTF-8 is not supported on windows platforms, so there the iconv workaround must be used:
<?php
setlocale
(LC_ALL, 'hun_hun');
echo(
iconv('ISO-8859-2', 'UTF-8',strftime('%Y. %B %d. %A')));
?>

The output is the same as before. Note that, the iconv first parameter is ISO-8859-2 not ISO-8859-1, because the locale is hungarian which uses 8859-2 codepage as default. It is needed for the right accents.

If you want use the same code for Windows and Linux platforms, the second one is the right option (the iconv trick), but the locale configuration must be different (Linux: hu_HU, windows: hun_hun), but in that case the UTF8 tag is not needed for the Linux config.
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1
Uwe at Familie-Loyal dot de
1 year ago
more fixed Problems while uing strftime in win32-systems.

        function strftime_win32($format, $ts = null) {
                if (!$ts) $ts = time();
       
                $mapping = array(
                                '%C' => sprintf("%02d", date("Y", $ts) / 100),
                                '%D' => '%m/%d/%y',
                                '%e' => sprintf("%' 2d", date("j", $ts)),
                                '%h' => '%b',
                                '%n' => "\n",
                                '%r' => date("h:i:s", $ts) . " %p",
                                '%R' => date("H:i", $ts),
                                '%t' => "\t",
                                '%T' => '%H:%M:%S',
                                '%u' => ($w = date("w", $ts)) ? $w : 7
                );
                $format = str_replace(
                                array_keys($mapping),
                                array_values($mapping),
                                $format
                );
               
                if($format=='%V' or $format=='%G' or $format=='%g'){
                        // When strftime("%V") fails, some unoptimized workaround
                        //
                        // http://en.wikipedia.org/wiki/ISO_8601 : week 1 is "the week with the year's first Thursday in it (the formal ISO definition)"

                       
                        $year = strftime("%Y", $ts);
                        $isoyear=$year;
                       
                        $first_day = strftime("%w", mktime(0, 0, 0, 1, 1, $year));
                        $last_day = strftime("%w", mktime(0, 0, 0, 12, 31, $year));
                       
                        $number = $isonumber = strftime("%W", $ts);
                       
                        // According to strftime("%W"), 1st of january is in week 1 if and only if it is a monday
                        if ($first_day == 1) {
                                $isonumber--;
                        }
                       
                        // 1st of january is between monday and thursday; starting (now) at 0 when it should be 1
                        if ($first_day >= 1 && $first_day <= 4){
                                $isonumber++;
                                $isoyear=$year;
                        }elseif ($number == 0){
                                $isonumber = mktime(0, 0, 0, 12, 31, $year - 1);
                                $isoyear=$year;
                        }
                        if ($isonumber == 53 && ($last_day == 1 || $last_day == 2 || $last_day == 3)){
                                $isonumber = 1;
                                $isoyear=$year+1;
                        }
                        if ($format=='%V') {
                                return sprintf("%02d", $isonumber);
                        }elseif ($format=='%G'){
                                return sprintf("%04d", $isoyear);
                        }elseif ($format=='%g'){
                                return substr(sprintf("%04d", $isoyear),-2);
                        }
                       
                               
                }else{
                        return strftime($format, $ts);
                }
        }
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1
dgudgeon at example dot com
3 years ago
If moving from date() to strftime() to support additional languages, you may miss the ordinal suffix format option date('S'). Workaround this by adding an extra modifier (%O).

<?php
function my_strftime ($format, $timestamp)
{
   
$format = str_replace('%O', date('S', $timestamp), $format);   
    return
strftime($format, $timestamp);
}
?>
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0
alexbrtn@gmail dot com
5 months ago
{--}, it is replaced on "today" or "yesterday"
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0
Chris
2 years ago
Sometimes, you want Jan 1 to be week 1 and weeks to begin on Sunday. Here's a way to use strftime U format character to follow this convention:
<?php
$month
= 5; $year = 2012; echo "Week #'s in May 2012: ";
$week_num_correction = strftime('%U', mktime(0,0,0,1,1,$year)) === '00' ? 1 : 0;
$week_numbers = range(strftime('%U', mktime(0,0,0,$month,1,$year)) + $week_num_correction, strftime('%U', mktime(0,0,0,$month+1,0,$year)) + $week_num_correction);
foreach(
$week_numbers as $week_number) echo "$week_number ";
?>
displays: Week #'s in May 2012: 18 19 20 21 22
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0
fmaz008 at gmail dot com
2 years ago
The example of the workarround for the %e modifier is a bit complex. Sometime you might want to prefer a simple ltrim():

<?php
ltrim
(strftime('%d', $time), '0');
?>
up
0
Anonymous
3 years ago
%V may fail with some systems (Windows XP, at least). Here is a function that should work to get the week number of a day (timestamped), according to ISO 8601.

"should work" as in "it is working with my understanding of this norm", where 1st of january can be week 52, 53 or 01. Hopefully.

testing (php_uname("s") == "Windows NT") or equivalent can be an option (when switching between Wampserver and a GNU server, for instance).

Please, erase and correct my message if there is any error.

<?php
function week_isonumber ($time) {
// When strftime("%V") fails, some unoptimized workaround
//
// http://en.wikipedia.org/wiki/ISO_8601 : week 1 is "the week with the year's first Thursday in it (the formal ISO definition)"

   
$year = strftime("%Y", $time);

   
$first_day = strftime("%w", mktime(0, 0, 0, 1, 1, $year));
   
$last_day = strftime("%w", mktime(0, 0, 0, 12, 31, $year));
       
   
$number = $isonumber = strftime("%W", $time);

   
// According to strftime("%W"), 1st of january is in week 1 if and only if it is a monday
   
if ($first_day == 1)
       
$isonumber--;

   
// 1st of january is between monday and thursday; starting (now) at 0 when it should be 1
   
if ($first_day >= 1 && $first_day <= 4)
       
$isonumber++;
    else if (
$number == 0)
       
$isonumber = week_isonumber(mktime(0, 0, 0, 12, 31, $year - 1));

    if (
$isonumber == 53 && ($last_day == 1 || $last_day == 2 || $last_day == 3))
       
$isonumber = 1;

    return
sprintf("%02d", $isonumber);
}
?>
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0
Lemmi
4 years ago
Why not use utf8_encode to fix problems with letters in ISO-8859-1 and charset set to UTF-8?

For example:
<?php

setlocale
(LC_TIME, "de_DE");
echo
utf8_encode(strftime('%B')); // Output e.g.: März

?>
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0
baptiste dot place at utopiaweb dot fr
4 years ago
Created this small method to convert a date format to a strftime format. One format is enough to learn :)

<?php
/**
* Convert a date format to a strftime format
*
* Timezone conversion is done for unix. Windows users must exchange %z and %Z.
*
* Unsupported date formats : S, n, t, L, B, G, u, e, I, P, Z, c, r
* Unsupported strftime formats : %U, %W, %C, %g, %r, %R, %T, %X, %c, %D, %F, %x
*
* @param string $dateFormat a date format
* @return string
*/
public static function dateFormatToStrftime($dateFormat) {
   
   
$caracs = array(
       
// Day - no strf eq : S
       
'd' => '%d', 'D' => '%a', 'j' => '%e', 'l' => '%A', 'N' => '%u', 'w' => '%w', 'z' => '%j',
       
// Week - no date eq : %U, %W
       
'W' => '%V'
       
// Month - no strf eq : n, t
       
'F' => '%B', 'm' => '%m', 'M' => '%b',
       
// Year - no strf eq : L; no date eq : %C, %g
       
'o' => '%G', 'Y' => '%Y', 'y' => '%y',
       
// Time - no strf eq : B, G, u; no date eq : %r, %R, %T, %X
       
'a' => '%P', 'A' => '%p', 'g' => '%l', 'h' => '%I', 'H' => '%H', 'i' => '%M', 's' => '%S',
       
// Timezone - no strf eq : e, I, P, Z
       
'O' => '%z', 'T' => '%Z',
       
// Full Date / Time - no strf eq : c, r; no date eq : %c, %D, %F, %x 
       
'U' => '%s'
   
);
   
    return
strtr((string)$dateFormat, $caracs);
}
?>

I use it with this condition on a date format :
if(preg_match("/(D|l|F|M)/", $format))
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0
Chad
4 years ago
On the Linux server I'm using, strftime() also accepts a "-" option to request no padding:

<?php
$ts
= strtotime("4 Nov 2009");
echo
strlen(strftime("%-e", $ts)), "\n"; // "1" (no padding)
echo strlen(strftime("%e", $ts)), "\n"; // "2" (space padded)
?>
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0
dapikk[at]gmail[dot]com
5 years ago
I had a need to subtrackt an older time from current time to get the time between.
Example: If one has worked from 2009-03-16 11:33:54 to 2009-03-16 12:01:54 then he has worked X hours,minutes and seconds. I tried to find that X. And so - one solution would be:
<?php
$start_date
= strtotime("2009-03-16 11:33:54"); //start date from database - date("Y-m-d H:i:s") made as UNIX timestamp
$end_date = strtotime("2009-03-16 12:01:54"); //end date from database - date("Y-m-d H:i:s") made as UNIX timestamp
$ajavahe = $end_date - $start_date;
$time_between = gmstrftime('%Hh %Mm %Ss', $ajavahe); //gmstrftime() deals with different timezones correctly. (If in example you would be situated in Estonia and you would use strftime() you get wrong answer off by 2 hrs, because timezone is GMT+2 - with gmstrftime() comes right answer.)

echo 'You have worked: '.$time_between;
?>
Hope that this one makes someones life easier :D
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0
khaled dot ataia at gmail dot com
5 years ago
for Arabic

<?php
setlocale
(LC_ALL,'ar');
echo
strftime('%A %d %B %Y');
?>
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0
eljaunis at gmail dot com
5 years ago
This is what worked in my case:

<?php
    setlocale
(LC_ALL, 'es_ES').': ';
    echo
iconv('ISO-8859-1', 'UTF-8', strftime('%A %d de %B de %Y', time()));
   
?>

it displays: miércoles 22 de octubre de 2008
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0
buana95 at yahoo dot com
5 years ago
For windows user:

If you unsuccessfully change date/time format to your locale country using xx_XX format, try using XXX format or ISO-639 country codes format.

See complete list for ISO-639 here: http://www.w3.org/WAI/ER/IG/ert/iso639.htm

For example:

<?php
setlocale
(LC_ALL, 'IND');
echo
strftime("Today in Indonesia is %A");
?>
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0
nielsvan den berge at hotmail dot com
6 years ago
A small function to get the first weekday of the month.
For example the first monday of the month, or the first friday, etc.

<?php 
 
/**
   *
   *  Gets the first weekday of that month and year
   *
   *  @param  int   The day of the week (0 = sunday, 1 = monday ... , 6 = saturday)
   *  @param  int   The month (if false use the current month)
   *  @param  int   The year (if false use the current year)
   *
   *  @return int   The timestamp of the first day of that month
   *
   **/ 
 
function get_first_day($day_number=1, $month=false, $year=false)
  {
   
$month  = ($month === false) ? strftime("%m"): $month;
   
$year   = ($year === false) ? strftime("%Y"): $year;
   
   
$first_day = 1 + ((7+$day_number - strftime("%w", mktime(0,0,0,$month, 1, $year)))%7);
 
    return
mktime(0,0,0,$month, $first_day, $year);
  }

// this will output the first wednesday of january 2007 (wed 03-01-2007)
echo strftime("%a %d-%m-%Y", get_first_day(3, 1, 2007));
?>
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0
ma
6 years ago
note, that for some languages you MUST set LC_ALL instead of LC_TIME.

note that you further have to explicitly define your output-encoding (default is ISO-8859-1 [which makes problems for some languages])!

at least i expirienced this behaviour on a german WinXP-PHP4 environment:

<?php

// does not work - gives question marks:
setlocale(LC_TIME, 'RUS'); // ISO Alpha-3 is supported by xp
echo strftime('%A', time());

?>

<?php

// DOES work:
header('Content-Type: text/html; charset=UTF-8'); // you could also use another charset here if iconv isn't installed on your system.

echo setlocale(LC_ALL, 'RUS').': ';
echo
iconv('windows-1251', 'UTF-8', strftime('%A', time()))."\n";

?>
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0
th1nk3r at gmail dot DELETETHIS dot com
7 years ago
Function strftime() use the locales installed in your system (linux).

If you are like me and only leave in the system the locales you use normally (en_US and your own language locale, like es_ES), you'll only be able to use the locales installed. If your application is translated to other languages, you need these locales too.

The name of the locale in your system is important too. This can be a problem when you want to distribute the app.

If you have this locales in your system:
en_US/ISO-8859-1
en_US.UTF-8/UTF-8
es_ES/ISO-8859-1
es_ES@euro/ISO-8859-15
es_ES.UTF-8/UTF-8
es_ES@euro/UTF-8

and use setlocale('es_ES'), the result will use the iso-8859-1 charset even if you have all your system, files and configuration options in UTF-8. To receive content in UTF-8, in this example, you need to use setlocale('es_ES.UTF-8') or setlocale('es_ES.UTF-8@UTF-8').

The definition of locales can change from one system to another, and so the charset from the results.
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0
jw at jwscripts dot com
9 years ago
The following function implements the conversion specifiers which are not supported on Win32 platforms:

(Note: the specifiers %V, %G and %g can be implemented using other functions described in this section)

<?php

function strftime_win32($format, $ts = null) {
    if (!
$ts) $ts = time();

   
$mapping = array(
       
'%C' => sprintf("%02d", date("Y", $ts) / 100),
       
'%D' => '%m/%d/%y',
       
'%e' => sprintf("%' 2d", date("j", $ts)),
       
'%h' => '%b',
       
'%n' => "\n",
       
'%r' => date("h:i:s", $ts) . " %p",
       
'%R' => date("H:i", $ts),
       
'%t' => "\t",
       
'%T' => '%H:%M:%S',
       
'%u' => ($w = date("w", $ts)) ? $w : 7
   
);
   
$format = str_replace(
       
array_keys($mapping),
       
array_values($mapping),
       
$format
   
);

    return
strftime($format, $ts);
}

?>
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0
neo at gothic-chat d0t de
10 years ago
To get a RFC 850 date (used in HTTP) of the current time:

gmstrftime ("%A %d-%b-%y %T %Z", time ());

This will get for example:
Friday 25-Jun-04 03:30:23 GMT

Please note that times in HTTP-headers _must_ be GMT, so use gmstrftime() instead of strftime().
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-1
Josue R.
6 years ago
Here's a simple version for date formating i use between displaying in HTML and converting back to MYSQL format:

<?php
function format_date($original='', $format="%m/%d/%Y") {
   
$format = ($format=='date' ? "%m-%d-%Y" : $format);
   
$format = ($format=='datetime' ? "%m-%d-%Y %H:%M:%S" : $format);
   
$format = ($format=='mysql-date' ? "%Y-%m-%d" : $format);
   
$format = ($format=='mysql-datetime' ? "%Y-%m-%d %H:%M:%S" : $format);
    return (!empty(
$original) ? strftime($format, strtotime($original)) : "" );
}
?>

example (in HTML or webapp):
[grab from database]...
$dbase_stored_date = "2007-03-15";
$display_html_date = format_date($dbase_stored_date);
... displays as "03/15/2007"

example (saving form via on POST/GET):
$update_date = format_date($_POST['display_html_date'], 'mysql-date');
// converts back to '2007-03-15'
.... [your mysql update here]

Don't forget to sanitize your POST/GET's   =)
up
-1
jerome dot place at free dot fr
6 years ago
Here is a function to convert dates before 1970, very useful if you are still using php 4 (it is supported in php5) :

<?php
# convert a date to special format
# $date is like 2000-01-01 00:00:00
# $format : refer to strftime function
function convert_date($date,$format) {   
    if(
$date=='0000-00-00 00:00:00' OR $date=='0000-00-00' OR $date=='' OR $date==NULL) {
        return
'';
    }
    else {
       
$year=substr($date,0,4);
        if(
phpversion() < 5.0 AND $year < 1970) {
           
           
$new_date=substr_replace($date,'1980',0,4); # we replace the year by a year after 1970       
           
$new_format=eregi_replace('%a|%A|%u','',$format); # we remove days information from the format because they would be wrong
           
$new_date=strftime($new_format,strtotime($new_date)); # we convert the date
           
$new_date=eregi_replace('1980',$year,$new_date); # we put back the real year
           
return $new_date;
        }
        else {
            return
strftime($format,strtotime($date));
        }
    }
}
?>
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-2
Michael Z.
5 years ago
This is so simple it has to be found in one of all the comments on all those different time functions. But since I didn't find it, here it is: Use this to convert between different time formats:

<?PHP
if (!function_exists('convertTime')) {
 
/** Converts time strings from one format into another using
   *  PHP formats.
   *
   *  @param String $dformat Format to convert to
   *  @param String $sformat Format to convert from, e.g. format
   *      of $ts
   *  @param String $ts Time string to be converted
   *  @return String Supplied time translated to the format specified
   *    in $dformat
   */
 
function convertTime($dformat,$sformat,$ts) {
   
extract(strptime($ts,$sformat));
    return
strftime($dformat,mktime(
                                 
intval($tm_hour),
                                 
intval($tm_min),
                                 
intval($tm_sec),
                                 
intval($tm_mon)+1,
                                 
intval($tm_mday),
                                 
intval($tm_year)+1900
                               
));
  }
}

/*
* And for the test....
*/
echo convertTime('%Y-%m-%d','%d.%m.%Y','27.11.2009');
?>

This should print "2009-27-11".

I did not put much effort in this code. The task also seems "too simple to be neccessary". But as I said, I didn't find anything to help me with this.

Cheers,

Michael Z
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-2
jjarsater at gmail dot com
5 years ago
<?php
// Date string
$timestamp     =     strftime("%Y-%m-%d %H:%M:%S %Y");

// From this string ($timestamp) can we print
echo strftime("%a %d %b %H:%M:%S %Y", strtotime($timestamp))."<br/>";
echo
strftime("%a %d %b %H:%M", strtotime($timestamp))."<br/>";
echo
strftime("%Y-%m-%d %H:%M:%S", strtotime($timestamp))."<br/>";
echo
strftime("%Y-%m-%d %H:%M", strtotime($timestamp))."<br/>";
echo
strftime("%Y-%m-%d", strtotime($timestamp))."<br/>";
echo
strftime("%a %d %b %Y", strtotime($timestamp))."<br/>";

/*And it will output

Wed 20 May 15:53:40 2009
Wed 20 May 15:53
2009-05-20 15:53:40
2009-05-20 15:53
2009-05-20
Wed 20 May 2009

*/
?>
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