strftime

(PHP 4, PHP 5, PHP 7, PHP 8)

strftime Formatta una data/orario locale accordandola/o alle impostazioni locali according to locale settings

Descrizione

strftime(string $format, int $ timestamp = ?): string

Restituisce una stringa formattata in accordo con la stringa del formato data usando il parametro dato timestamp o l'attuale orario locale se non è stato dato il timestamp. I nomi di mesi e giorni della settimana e le altre stringhe dipendenti dalla lingua rispettano le attuali impostazioni locali con setlocale().

Le seguenti sequenze di caratteri sono utilizzate nella stringa del formato:

  • %a - Nome del giorno della settimana abbreviato in accordo con i parametri locali
  • %A - Nome completo del giorno della settimana in accordo con i parametri locali
  • %b - Nome del mese abbreviato in accordo con i parametri locali
  • %B - Nome completo del mese in accordo con i parametri locali
  • %c - Rappresentazione preferita di data e orario per le attuali impostazioni locali
  • %C - numero del secolo (l'anno diviso 100 e troncato in un intero, intervallo tra 00 e 99)
  • %d - giorno del mese come numero decimale (intervallo tra 01 e 31)
  • %D - come %m/%d/%y
  • %e - giorno del mese come numero decimale, un singolo carattere è preceduto da uno spapzio (intervallo tra ' 1' e '31')
  • %g - come %G, ma senza il secolo.
  • %G - L'anno a 4 cifre corrispondente al numero di setitmana ISO (vedi %V). Questa ha lo stesso formato e valore di %Y, eccetto che se il numero di settimana ISO appartiene al precedente o prossimo anno, è invece utilizzato l'anno attuale.
  • %h - come %b
  • %H - ora come numero decimale usando il sistema a 24 ore (intervallo tra 00 e 23)
  • %I - ora come numero decimale usando il sistema a 12 ore (intervallo tra 01 e 12)
  • %j - giorno dell'anno come numero decimale (intervallo tra 001 e 366)
  • %m - mese come numero decimale (intervallo tra 01 e 12)
  • %M - minuto come numero decimale
  • %n - carattere di nuova linea
  • %p - entrambi `am' o `pm' accordati a un valore di tempo dato, o alle stringhe corrispondenti per le impostazioni locali
  • %r - orario in notazione a.m. e p.m
  • %R - orario nella notazione a 24 ore
  • %S - secondi come numero decimale
  • %t - Carattere di tabella
  • %T - orario attuale, identico a %H:%M:%S
  • %u - giorno della settimana come numero decimale [1,7], dove 1 rappresenta il Lunedì
    Avviso

    Sun Solaris sembra far iniziare con la Domenica a come 1 sebbe la ISO 9889:1999 (l'attuale standard di C) specifica chiaramente che dovrebbe iniziare dal Lunedì.

  • %U - numero della settimana dell'anno in corso come numero decimale, iniziando dalla prima Domenica come primo giorno della prima settimana
  • %V - Il numero di settimana ISO 8601:1988 dell'anno attuale come numero decimale, intervallo tra 01 e 53, dove la settimana 1 è la prima settimana che ha almeno 4 giorni dell'attuale anno, e con il Lunedì come primo giorno della settimana. (Utilizza %G o %g per l'anno componente che corrisponde al numero di settimana per il timestamp specificato.)
  • %W - numero della settimana dell'attuale anno come numero decimale, partendo con il primo Lunedì come primo giorno della prima settimana
  • %w - giorno della settimana come decimale, dove la Domenica è 0
  • %x - visualizzazione della data preferita dalle impostazioni del sistema locale senza orario
  • %X - visualizzazione dell'orario preferito dalle impostazioni del sistema locale senza data
  • %y - anno come numero decimale senza secolo (intervallo tra 00 e 99)
  • %Y - anno come numero decimale incluso il secolo
  • %Z - fuso orario o abbreviazione
  • %% - il carattere `%'

Nota:

Non tutte le sequenze di caratteri potrebbero essere supportate dalla tua libreria locale di C, in tal caso la funzione strftime() non sarà supportata dal PHP. Questo significa che %T e %D non funzioneranno sotto Windows.

Example #1 Esempio di strftime()

setlocale (LC_TIME, "C");
print (strftime ("%A in Finlandese è "));
setlocale (LC_TIME, "fi_FI");
print (strftime ("%A, in Francese "));
setlocale (LC_TIME, "fr_FR");
print (strftime ("%A e in Italiano "));
setlocale (LC_TIME, "it_IT");
print (strftime ("%A.\n"));
Questo esempio funziona se hai le ripettive impostazioni di lingua installate nel tuo sistema.

Guarda anche setlocale() e mktime() e le»  specifiche dell' Open Group per strftime().

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User Contributed Notes 40 notes

up
47
Bondas Timotei
12 years ago
If strange characters are returned use utf8_encode(strftime()) for UTF-8 characters
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11
aaronw at catalyst dot net dot nz
6 years ago
The page mentions that the available conversion specifiers may be different in "Windows, some Linux distributions, and a few other operating systems".

Specifically, the list of specifiers on this page is basically those from standard GNU/Linux (but without %E, %O, and %+), which is a combination of specifiers from a few different standards. See: http://man7.org/linux/man-pages/man3/strftime.3.html

This means that, if you're not using Linux, or your Linux distro has a different C library than glibc, there *will* probably be at least a few differences in the supported specifiers. Windows has the most differences, but I've also encountered differences in Alpine Linux (which uses musl intsead of glibc) and BSD.
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9
ciprianmp at yahoo dot com
13 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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8
raf at sns dot pm
8 years ago
For all those who work with WampServer on Windows,
I propose you a formatting(layout) of date as " Friday, January 1st, 2016 " instead of " Friday, January 01st, 2016 " (note the zero in front of 1) which works at the same time on Windows / WampServer and on (on-line) Linux / waiter.
There are problems with "%e" - > which(who) works on Linux and not on Windows - > "%#d" (this works on windows/wampserver)
I simply made a condition:
<?php
if ($_SERVER['SERVER_NAME'] == "website.com") // On line
{
  
$number_of_the_day= "%e"; // Number of the day without "0"
}
else
{
  
$number_of_the_day = "%#d"// The same on Windows/Wampserver
}

setlocale(LC_TIME, 'fr_FR.utf8','fra'); // I'm french !

// i use this fonction ucfirst('string') for "V" Maj. and "J" Maj.

echo ucfirst(strftime('%A '.$number_of_the_day.' %B %Y'));

//  "Vendredi 1 Janvier 2016"  (->  without "0")
?>
Here we are, I hope to have helped.
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7
th1nk3r at gmail dot DELETETHIS dot com
17 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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5
baptiste dot place at utopiaweb dot fr
14 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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2
Anonymous
13 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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6
Lemmi
13 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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6
dgudgeon at example dot com
12 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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2
Chris
12 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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4
szilagyigabor at yahoo dot com
14 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
chris at ocproducts dot com
7 years ago
Displaying hours in 12 hour clock...

%I = Cross-platform, padded with leading zero
%-I = Not on Windows, no padding
%#I = Windows only, no padding

Linux and MacOS confirmed to behave the same.
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2
fmaz008 at gmail dot com
12 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');
?>
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2
Josue R.
16 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   =)
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3
eljaunis at gmail dot com
15 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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3
jjarsater at gmail dot com
14 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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1
neo at gothic-chat d0t de
19 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
lichihwu at gmail dot com
9 years ago
strftime() will get local time using timezone setting from date_default_timezone_set, then send format and converted tm structure to strftime() system call.

So it will output time stamp string ("%s" format string) with timezone converted tm structure, and it will be wrong unless you set  the same time zone with your machine.
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2
eric dot brison at anakeen dot com
10 years 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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1
jerome dot place at free dot fr
16 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
denis at spiralsolutions dot com
17 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
18 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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1
Chad
14 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
aimendrikonan at gmail dot com
3 years ago
// To set french date format

public function date_chaine($date){

        if($date==NULL){ $date = date('Y-m-d');}
        setlocale(LC_ALL, 'fr_FR').': ';
        return strftime( "%A %d %B %Y" , strtotime($date));
    }

/*
    return this Mercredi 16 septembre 2020
*/
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0
Marc17
6 years ago
For Windows : this function return the ISO 8601 week number of timestamp.

function week_number_ISO8601($ts_date=0) {
    //See https://fr.wikipedia.org/wiki/ISO_8601#Num.C3.A9ro_de_semaine
    if ($ts_date==0) $ts_date=time();
    $n_w_th_ts_date=strftime('%w',$ts_date);
    $ts_thursday=($n_w_th_ts_date==0)?($ts_date-3*24*3600):($ts_date-($n_w_th_ts_date-4)*24*3600);
    $n_ts_thursday=strftime('%j',$ts_thursday);
    $w_n_iso=1+(int)(($n_ts_thursday-1)/7);
    return sprintf("%02d",$w_n_iso);
}
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0
denis at ibresource dot ru
9 years ago
%p and %P replaced to '' in ru and other locales so 20:10 in %I:%M %p will be 08:10 in russian (without pm)
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0
Michael Z.
14 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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0
buana95 at yahoo dot com
15 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
16 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
16 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
jw at jwscripts dot com
18 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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-1
Uwe at Familie-Loyal dot de
10 years 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
emanuelis at gmail
5 years ago
Linux locales have alt_mon  values for months and php's strftime() has an undocumented format string %OB to get these values.

<?php
setlocale
(LC_ALL, "lt_LT.UTF8");

for (
$i = 1; $i <= 12; $i++) {
echo
strftime("%B", strtotime("2018-$i-01"))." ";
}
//outputs: sausio vasario kovo balandžio gegužės birželio liepos rugpjūčio rugsėjo spalio lapkričio gruodžio
echo "\n";

for (
$i = 1; $i <= 12; $i++) {
echo
strftime("%OB", strtotime("2018-$i-01"))." ";
}
//outputs: sausis vasaris kovas balandis gegužė birželis liepa rugpjūtis rugsėjis spalis lapkritis gruodis

?>
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-1
chris at ocproducts dot com
7 years ago
Displaying days of month...

%d = Cross-platform, padded with leading zero
%e = Not on Windows, padded with leading space
%-d = Not on Windows, no padding
%#d = Windows only, no padding

Linux and MacOS confirmed to behave the same.
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-2
alexbrtn@gmail dot com
10 years ago
{--}, it is replaced on "today" or "yesterday"
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-1
Anonymous
5 years ago
If you get wrong characters / encoding, use .utf8 notion after your locale, like this: setlocale(LC_TIME, 'sk_SK.utf8');
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-1
dosergio at gmail dot com
7 years ago
/*
     Date localized. (date + lo) = datelo
     @param $str = date string format
     @param optional $locale = desired locale, depends on presence in system. Defaults to en_US
     @param optional $time = If needs a specific time, and not current.

     @returns localized translation.

     usage example:  datelo( 'd-M-Y', 'pt_BR') internally changes to '%e-%b-%G' and returns "4-Dez-2016"  (Dezembro is Portuguese word)

    NOTE: Flags prohibited in this version:  "z" and "n", will cause to return the 'date' function version, with no translation!
*/

function datelo( $str, $locale='en_US', $time=null){

  if( $time === null){  $time = time(); }
  
  if ( preg_match("/[DlFM]/", $str) && ! preg_match("/[nz]/",  $str)){
    setlocale(LC_ALL, $locale);
    $dict = array();
    $dict['d'] = '%d';
    $dict['D'] = '%a';
    $dict['j'] = '%e';
    $dict['l'] = '%A';
    $dict['N'] = '%u';
    $dict['w'] = '%w';
    $dict['F'] = '%B';
    $dict['m'] = '%m';
    $dict['M'] = '%b';
    $dict['Y'] = '%G';
    $dict['g'] = '%l';
    $dict['G'] = '%k';
    $dict['h'] = '%I';
    $dict['H'] = '%H';
    $dict['i'] = '%M';
    $dict['s'] = '%S';
    $dict['S'] = ' '; //removes English sufixes th rd etc.
    $dict[' '] = ' ';
    $dict['-'] = '-';
    $dict['/'] = '/';
    $dict[':'] = ':';
    $dict[','] = ',';

    $chars = preg_split("//", $str);
    $nstr = '';

    foreach ($chars as $c){
      if ($c){ //skip empties
         $nstr .= $dict[$c];
      }
    }

    return strftime( $nstr);    

  }else{ // not localized

    return date( $str, $time);

  }
}
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-3
dapikk[at]gmail[dot]com
15 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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-11
khaled dot ataia at gmail dot com
15 years ago
for Arabic

<?php
setlocale
(LC_ALL,'ar');
echo
strftime('%A %d %B %Y');
?>
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-5
anton at zebooka dot com
6 years ago
This function outputs incorrect timezone.

PHP 7.1.14 (cli) (built: Feb  2 2018 08:42:59) ( NTS )

We have changed timezone several times in Russia, Novosibirsk:

$ zdump -v /usr/share/zoneinfo/Asia/Novosibirsk | tail -n10
/usr/share/zoneinfo/Asia/Novosibirsk  Sat Oct 30 19:59:59 2010 UTC = Sun Oct 31 02:59:59 2010 +07 isdst=1
/usr/share/zoneinfo/Asia/Novosibirsk  Sat Oct 30 20:00:00 2010 UTC = Sun Oct 31 02:00:00 2010 +06 isdst=0
/usr/share/zoneinfo/Asia/Novosibirsk  Sat Mar 26 19:59:59 2011 UTC = Sun Mar 27 01:59:59 2011 +06 isdst=0
/usr/share/zoneinfo/Asia/Novosibirsk  Sat Mar 26 20:00:00 2011 UTC = Sun Mar 27 03:00:00 2011 +07 isdst=0
/usr/share/zoneinfo/Asia/Novosibirsk  Sat Oct 25 18:59:59 2014 UTC = Sun Oct 26 01:59:59 2014 +07 isdst=0
/usr/share/zoneinfo/Asia/Novosibirsk  Sat Oct 25 19:00:00 2014 UTC = Sun Oct 26 01:00:00 2014 +06 isdst=0
/usr/share/zoneinfo/Asia/Novosibirsk  Sat Jul 23 19:59:59 2016 UTC = Sun Jul 24 01:59:59 2016 +06 isdst=0
/usr/share/zoneinfo/Asia/Novosibirsk  Sat Jul 23 20:00:00 2016 UTC = Sun Jul 24 03:00:00 2016 +07 isdst=0
/usr/share/zoneinfo/Asia/Novosibirsk  Mon Jan 18 03:14:07 2038 UTC = Mon Jan 18 10:14:07 2038 +07 isdst=0

Incorrect:

php > echo strftime('%Y-%m-%d %H:%M:%S %z', strtotime("2015-11-15"));
2015-11-15 00:00:00 +0700

Correct:
php > echo date('Y-m-d H:i:s O', strtotime("2015-11-15"));
2015-11-15 00:00:00 +0600
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