date_timezone_set
a date function supporting the milliseconds format character
<?php
function udate($format, $utimestamp = null)
{
if (is_null($utimestamp))
$utimestamp = microtime(true);
$timestamp = floor($utimestamp);
$milliseconds = round(($utimestamp - $timestamp) * 1000000);
return date(preg_replace('`(?<!\\\\)u`', $milliseconds, $format), $timestamp);
}
echo udate('H:i:s.u'); // 19:40:56.78128
echo udate('H:i:s.u', 654532123.04546); // 16:28:43.45460
?>
date
(PHP 4, PHP 5)
date — Σχηματίστε μία τοπική ώρα/ημερομηνία
Περιγραφή
string date
( string $format
[, int $
timestamp
] )
Επιστρέφει ένα string σχηματισμένο ανάλογα με το δοθέν format string, χρησιμοποιώντας τη δοθείσα integer παράμετρο timestamp ή την τοπική ώρα ένα δεν έχει δοθεί timestamp.
Note: Το έγκυρο πεδίο τιμών για ένα timestamp είναι τυπικά από Fri, 13 Dec 1901 20:45:54 GMT έως Tue, 19 Jan 2038 03:14:07 GMT. (Αυτές είναι οι ημερομηνίες που αντιστοιχούν στην ελάχιστη και μέγιστη τιμή, αντίστοιχα, ενός προσημασμένου integer των 32-bit). Στα windows το πεδίο περιορίζεται από την 01-01-1970 έως τις 19-01-2038.
Για να δημιουργείσετε ένα timestamp από μία ημερομηνία που αναπαρίσταται από string, μπορείτε να χρησιμοποιείσετε τη συνάρτηση strtotime(). Επιπλέον, μερικές βάσεις δεδομένων έχουν συναρτήσεις για να πετατρέπουν τις ημερομηνίες σε timestamps (όπως η συνάρτηση UNIX_TIMESTAMP της MySQL).
Οι ακόλουθοι χαρακτήρες αναγνωρίζονται από το format string:
- a - "am" ή "pm"
- A - "AM" ή "PM"
- B - Swatch Internet time
- d - ημέρα του μήνα, 2 ψηφία με ηγετικά μηδενικά ("01" έως "31").
- D - ημέρα της εβδομάδας, παρατίθεται με 3 γράμματα. π.χ. "Fri"
- F - μήνας, παρατίθεται το πλήρες όνομα. π.χ. "January"
- g - ώρα, σε 12ωρη μορφή χωρίς ηγετικά μηδενικά ("1" έως "12").
- G - ώρα, 24ωρη μορφή χωρίς ηγετικά μηδενικά ("0" έως "23").
- h - ώρα, 12ωρη μορφή ("01" έως "12").
- H - ώρα, 24ωρη μορφή ("00" έως "23").
- i - λεπτά ("00" έως "59").
- I (κεφαλαίο i) - "1" εάν είναι Θερινή Ώρα, αλλιώς "0".
- j - ημέρα του μήνα χωρίς ηγετικά μηδενικά ("1" έως "31").
- l (μικρό 'L') - ημέρα της εβδομάδας, παρατίθεται το πλήρες όνομα. π.χ. "Friday"
- L - boolean για το αν είναι δίσεκτο έτος ("0" ή "1").
- m - μήνας ("01" έως "12").
- M - μήνας, παρατίθεται με 3 γράμματα. π.χ. "Jan"
- n - μήνας χωρίς ηγετικά μηδενικά ("1" έως "12").
- O - διαφορά με την Greenwich time σε ώρες. π.χ. "+0200"
- r - ημερομηνία σε μορφή RFC 822; π.χg. "Thu, 21 Dec 2000 16:01:07 +0200" (προστέθηκε στην PHP 4.0.4)
- s - δευτερόλεπτα ("00" έως "59")
- S - το αγγλικο τακτικό επίθεμα για την ημέρα του μήνα, 2 χρακτήτων ("st", "nd", "rd" ή "th").
- t - πλήθος ημερών στο δοσμένο μήνα ("28" έως "31").
- T - Η ρύθμιση ζώνης ώρας της μηχανής; π.χ. "EST" ή "MDT"
- U - δυτερόλεπτα από την Unix Epoch (January 1 1970 00:00:00 GMT)
- w - ημέρα της εβδομάδας, αριθμητικά ("0" (Κυριακή) to "6" (Σάββατο)).
- W - πλήθος εβδομάδων του έτος κατά το ISO-8601, οι εβδομάδες αρχίζουν Δευτέρα (προστέθηκε στην PHP 4.1.0)
- Y - έτος, 4 ψηφία; π.χ. "1999"
- y - έτος, 2 ψηφία; π.χ. "99"
- z - ημέρα του έτους ("0" έως "365").
- Z - διαφορά της ζώνης ώρας σε δευτερόλεπτα ("-43200" έως "43200"). Η διαφορά για ζώνες ώρας δυτικά του UTC είναι πάντα αρνητική, και για αυτές ανατολικά του UTC πάντα θετική.
Example#1 Παραδείγματα της date()
echo date ("l dS of F Y h:i:s A");
echo "July 1, 2000 is on a " . date ("l", mktime(0,0,0,7,1,2000));
Μπορείτε να αποτρέψετε τη λειτουργία ενός αναγνωρίσιμου χαρακτήρα στο format string με το να θέσετε ένα backslash πριν από αυτόν. Εάν ο χαρακτήρας με το backslash είναι ήδη μία είδική ακολουθία, μπορεί να χρειαστεί να τοποθετήσετε ένα επιπλέον backslash.
Example#2 Χαρακτήρες escape στην date()
echo date("l \\t\h\e jS"); // prints something like 'Saturday the 8th'
Είναι δυνατό να χρησιμοποιείσετε την date() και τη mktime() για να προσδιορίσετε ημερομηνίες στο μέλλον ή στο παρελθόν.
Example#3 Παραδείγματα του συνδυασμού των συναρτήσεων date() και mktime()
$tomorrow = mktime (0,0,0,date("m") ,date("d")+1,date("Y"));
$lastmonth = mktime (0,0,0,date("m")-1,date("d"), date("Y"));
$nextyear = mktime (0,0,0,date("m"), date("d"), date("Y")+1);
Note: Αυτό μπορεί να είναι πιο αξιόπιστο από το να προσθέτετε ή να αφαιρείτε το πλήθος των δυτερολέπτων της ημέρας ή του μήνα σε ένα timestamp εξαιτίας της θερινής ώρας.
Μερικά επιπλέον παραδείγματα της date(). Πρατηρείστε ότι θα πρέπει να θέσετε backslash σε όλους τους χαρακτήρες, καθώς οποιοσδήποτε έχει μία ιδιαίτερη σημασία θα παράξει ανεπιθύμητα αποτελέσματα, και επειδή μπορεί να δοθεί νόημα και σε άλλους χαρακτήρες στις μελλοντικές εκδόσεις της PHP. Όταν κάνετε escape ένα χαρακτήρα, βεβαιωθείτε ότι χρησιμοποιείτε απλά εισαγωγικά για χαρακτήρες όπως ο \n, που θα γίνει νέα γραμμή.
Example#4 date() Formatting
/* Today is March 10th, 2001, 5:16:18 pm */
$today = date("F j, Y, g:i a"); // March 10, 2001, 5:16 pm
$today = date("m.d.y"); // 03.10.01
$today = date("j, n, Y"); // 10, 3, 2001
$today = date("Ymd"); // 20010310
$today = date('h-i-s, j-m-y, it is w Day z '); // 05-16-17, 10-03-01, 1631 1618 6 Fripm01
$today = date('\i\t \i\s \t\h\e jS \d\a\y.'); // It is the 10th day.
$today = date("D M j G:i:s T Y"); // Sat Mar 10 15:16:08 MST 2001
$today = date('H:m:s \m \i\s\ \m\o\n\t\h'); // 17:03:17 m is month
$today = date("H:i:s"); // 17:16:17
Για να διαμορφόσετε ημερομηνίες σε άλλες γλώσσες, θα πρέπει να χρησιμοποείσετε τις συνάρτησεις setlocale() και strftime().
Ανατρέξτε επίσης στις: getlastmod(), gmdate(), mktime(), strftime() και time().
add a note
User Contributed Notesdate
Cortexd
27-Aug-2008 11:47
27-Aug-2008 11:47
pdubbb1 at gmail dot com
26-Aug-2008 05:32
26-Aug-2008 05:32
here is the simpliest way to get the start and end date of the week;
<?php
$sdate=date('c',strtotime(date('Y')."W".date('W')."0"));
$edate=date('c',strtotime(date('Y')."W".date('W')."7"));
?>
the format is for the string in strtotime is;
2008W200
this stands for year - 2008, constant never changes - W, week number of the year - 20, day of the week - 0 for sunday, 1 for monday, etc....
so 2008W200 stands for the sunday of the 20th week of 2008.
This will only work in php 5 or better
rowe_a at glan-hafren dot ac dot uk
22-Aug-2008 02:16
22-Aug-2008 02:16
simple code to get the date of the monday and sunday of the current week.
inspired by: wulf dot kaiser at mpimf-heidelberg dot mpg dot de
<?
$day = date('d');
$wkday = date('l');
$month = date('m');
$year = date('Y');
switch($wkday) {
case 'Monday': $numDaysToSun = 6; $numDaysToMon = 0; break;
case 'Tuesday': $numDaysToSun = 5; $numDaysToMon = 1; break;
case 'Wednesday': $numDaysToSun = 4; $numDaysToMon = 2; break;
case 'Thursday': $numDaysToSun = 3; $numDaysToMon = 3; break;
case 'Friday': $numDaysToSun = 2; $numDaysToMon = 4; break;
case 'Saturday': $numDaysToSun = 1; $numDaysToMon = 5; break;
case 'Sunday': $numDaysToSun = 0; $numDaysToMon = 6; break;
}
echo $wkday;
echo " - ";
echo $day;
echo " - ";
echo $month;
echo " - ";
echo $year;
echo " - ";
echo $numDaysToSun;
echo " - ";
echo $numDaysToMon;
echo " - ";
echo $monday = date('d-m-Y', mktime('0','0','0', $month, $day-$numDaysToMon, $year));
echo " - ";
echo $sunday = date('d-m-Y', mktime('0','0','0', $month, $day+$numDaysToSun, $year));
?>
headings:
Day(string) - day - month - year - days to sun - days from mon - monday date - sunday date
output:
Friday - 22 - 08 - 2008 - 2 - 4 - 18-08-2008 - 24-08-2008
abazaba.ru
14-Aug-2008 03:53
14-Aug-2008 03:53
All novices must be very carefull when working with timestamps as second values.
From first glance it looks like date("Y-m-d H:i:s",TIMESTAMP) will return correct date, based on "how much seconds gone from 1970".
But here is the feature, it'll be corrected time, according to LOCAL timezone.
So if you take a 25200 as timestamp (10 hours),
then on one server you'll get
1970-01-01 08:00:00
and on other server you'll get
1970-01-01 09:00:00
and so on.
Though you could expect 1970-01-01 10:00:00 in all cases, because if 25200 seconds gone from 1970-01-01 00:00:00 it obviously have to be 1970-01-01 10:00:00
I spend today 3 hours to correct scripts which were created with such error by previous programmer, so please, guys, don't make me work like this and remember about conversation to LOCAL time.
phprocks at aol dot com
06-Aug-2008 11:25
06-Aug-2008 11:25
Try this for finding the difference in days between 2 dates/datetimes... take note though, date_parse requires PHP version 5.1.3 or higher.
<?php
/**
* Finds the difference in days between two calendar dates.
*
* @param Date $startDate
* @param Date $endDate
* @return Int
*/
function dateDiff($startDate, $endDate)
{
// Parse dates for conversion
$startArry = date_parse($startDate);
$endArry = date_parse($endDate);
// Convert dates to Julian Days
$start_date = gregoriantojd($startArry["month"], $startArry["day"], $startArry["year"]);
$end_date = gregoriantojd($endArry["month"], $endArry["day"], $endArry["year"]);
// Return difference
return round(($end_date - $start_date), 0);
}
?>
laszlo72 at gmail dot com
28-Jul-2008 03:16
28-Jul-2008 03:16
if you want to get the number of month
between two dates
you can use this function:
<?php
/*
$start = "YYYYMM" ;
$stop = "YYYYMM" ;
*/
function getNumMonth($start,$stop) {
$aSta = substr($start,0,4) ;
$aSto = substr($stop,0,4) ;
$mSta = substr($start,4,2) ;
$mSto = substr($stop,4,2) ;
if($aSta == $aSto) {
return $mSto-$mSta+1 ;
} else {
if(($aSto-$aSta) == 1) {
return 12-$mSta+$mSto+1 ;
} else {
return (12-$mSta+$mSto+1)+($aSto-$aSta-1)*12;
}
}
}
?>
JonathanCross.com
25-Jul-2008 01:22
25-Jul-2008 01:22
<?php
// A demonstration of the new DateTime class for those
// trying to use dates before 1970 or after 2038.
?>
<h2>PHP 2038 date bug demo (php version <?= phpversion() ?>)</h1>
<div style='float:left;margin-right:3em;'>
<h3>OLD Buggy date()</h3>
<?
$format='F j, Y';
for ( $i = 1900; $i < 2050; $i++) {
$datep = "$i-01-01";
?>
Trying: <?=$datep?> = <?=date($format, strtotime($datep))?><br>
<?
}
?></div>
<div style='float:left;'>
<h3>NEW DateTime Class (v 5.2+)</h3><?
for ( $i = 1900; $i < 2050; $i++) {
$datep = "$i-01-01";
$date = new DateTime($datep);
?>
Trying: <?=$datep?> = <?=$date->format($format)?><br>
<?
}
?></div>
gertrude dot mendoza at gmail dot com
18-Jul-2008 12:41
18-Jul-2008 12:41
<?php
/*
@params $firstdate, $lastdate
@return array() of array(monday,sunday)
@description returns all the mondays and sundays of the given date range
*/
function get_week_intervals($fdate,$ldate)
{
list($year,$month,$day) = explode('-',$fdate);
$daynum = date('w',
mktime(date('H'),
date('i'),
date('s'),
$month,
$day,
$year)
);
$daynum = $daynum==0? 7 : $daynum;
$week=array();
//get the dayname of the first day
//if month = current month get the current date as the last day
if($month==date('m'))
{
$lastday = date('d');
}
else
{
$lastday = date('t', strtotime($fdate));
}
if((date('l',strtotime($fdate))) == 'Sunday')
{
$monday = $fdate;
$sunday = $fdate;
}
else
{
$monday = $fdate;
$sunday = date('Y-m-d',(mktime(date('H'),
date('i'),date('s'),$month,
$day,$year))-($daynum-7)*86400);
}
$week[] = array('monday'=>$monday,'sunday'=>$sunday);
$day = date('d',strtotime($sunday." +1 day"));
while($sunday < $ldate)
{
$monday = date('Y-m-d',strtotime($sunday." +1 day"));
list($year,$month,$day) = explode('-',$monday);
$daynum = date('w',
mktime(date('H'),
date('i'),
date('s'),
$month,
$day,
$year)
);
$daynum = $daynum==0? 7 : $daynum;
$sunday = date('Y-m-d',(mktime(date('H'),date('i'),
date('s'),$month,$day,$year))-($daynum-7)*86400);
if($sunday > $ldate)
{
$sunday = $ldate;
}
$week[] = array('monday'=>$monday,'sunday'=>$sunday);
}
return $week;
}
?>
Anonymous
17-Jul-2008 09:30
17-Jul-2008 09:30
to get the date of the monday from a week these function is useful:
<?php
/* Get First Calendar Week of Year x*/
function firstkw($jahr)
{
$erster = mktime(0,0,0,1,1,$jahr);
$wtag = date('w',$erster);
if ($wtag <= 4) {
/**
* Donnerstag oder kleiner: auf den Montag zurückrechnen.
*/
$montag = mktime(0,0,0,1,1-($wtag-1),$jahr);
} else {
/**
* auf den Montag nach vorne rechnen.
*/
$montag = mktime(0,0,0,1,1+(7-$wtag+1),$jahr);
}
return $montag;
}
/*GET timestamp of monday of month x*/
function mondaykw($kwtime)
{
$firstmonday =$this->firstkw(date("Y", $kwtime));
$mon_monat = date('m',$firstmonday);
$mon_jahr = date('Y',$firstmonday);
$mon_tage = date('d',$firstmonday);
$tage = (date("W", $kwtime)-1)*7;
$mondaykw = mktime(0,0,0,$mon_monat,$mon_tage+$tage,$mon_jahr);
return $mondaykw;
}
echo mondaykw(time()); //1215986400
?>
fgabrieli at gmail dot com
14-Jul-2008 12:56
14-Jul-2008 12:56
here is a function to split a number of seconds in hours, minutes and seconds
<?php
function split_seconds($seconds)
{
// get the minutes
$minutes = floor($seconds / 60) ;
$seconds_left = $seconds % 60 ;
// get the hours
$hours = floor($minutes / 60) ;
$minutes_left = $minutes % 60 ;
// (test) show the result
echo "$hours hours $minutes_left minutes and $seconds_left seconds" ;
}
split_seconds(68648) ;
?>
best regards
fernando gabrieli
shem_lexluger at yahoo.com
14-Jul-2008 05:43
14-Jul-2008 05:43
Assuming a week starts on Monday. To calculate the week number of the current date starting from a specified date, use this function:
<?php
function weekcounter($start_date)
{
$start_date = strtotime($start_date);
$today = strtotime(date('d-m-Y'));
$week = 1;
while($start_date < $today) {
$start_date = strtotime('next Monday', $start_date);
$week++;
}
return $week;
}
// Example:
//now = 14-07-2008
echo weekcounter('01-07-2008'); //prints 3
echo weekcounter('01-06-2008'); //prints 8 instead of 7; because 1st jun is a Sunday so it is week 1 and 2nd june is week 2. Feel free to tweak.
?>
Rob A.
10-Jul-2008 09:38
10-Jul-2008 09:38
Quick function for returning the names of the next 7 days of the week starting with today.
Returns an array that can be formatted to your liking.
<?php
/**
* Returns array of next 7 days starting with today
*
*/
function next_7_days() {
// create array of day names. You can change these to whatever you want
$days = array(
'Monday',
'Tuesday',
'Wednesday',
'Thursday',
'Friday',
'Saturday',
'Sunday');
$today = date('N');
for ($i=1;$i<$today;$i++) {
// take the first element off the array
$shift = array_shift($days);
// ... and add it to the end of the array
array_push($days,$shift);
}
// returns the sorted array
return $days;
}
?>
It basically takes an array starting with Monday and shifts each day to the end of the array until the first element in the array is today.
con_tobe at yahoo dot com
09-Jul-2008 08:46
09-Jul-2008 08:46
Doing $w-- for months ending on Sat won't hurt (i.e. if you're counting weeks as is the case below), but halocastle's code is perfectly fine as is and quite fast. He/she uses $w as a key for the $weeks array. "Halo" does this BEFORE $w++, so $w-- is superfluous as the loop has already ended. For May, 2008, I get 5 weeks as expected...
Array
(
[1] => Array
(
[4] => 1
[5] => 2
[6] => 3
)
[2] => Array
(
[0] => 4
[1] => 5
------------OMITTED-----------------
[4] => 22
[5] => 23
[6] => 24
)
[5] => Array
(
[0] => 25
[1] => 26
[2] => 27
[3] => 28
[4] => 29
[5] => 30
[6] => 31
)
)
I guess the one pit-fall of the code is if you overlap months, say the following year, then $m-- makes perfect since...I think (haven't gotten that far...yet).
I modified "Halo's" code to include months, too (this is from a snippet that produces a three month calendar, hence the outer $months loop, omitted here).
<?php
$m = date('m');
$Y = date('Y');
// for() {months loop omitted
$var_date = mktime(0, 0, 0, $m, 1, $Y);
$month_name = date('F', $var_date);
$months[$month_name]['DAYS'] = date('t', $var_date);
$months[$month_name]['FIRST_DAY'] = date('w', $var_date);
//}
foreach($months as $month => $key) {
$weeks = array();
for($i = 1, $j = $key['FIRST_DAY'], $w = 1;$i <= $key['DAYS'];$i++) {
$weeks[$w][$j] = $i;
$j++;
if($j == 7) {
$j = 0;
$w++;
}
}
$months[$month]['WEEKS'] = $weeks;
}
?>
Enjoy!
dmagick at gmail dot com
02-Jul-2008 07:44
02-Jul-2008 07:44
Slight amendment to halocastle at yahoo dot com 's code as it doesn't take into account when a month finishes on a Saturday (eg May 2008).
<?php
$start_date = mktime(0, 0, 0,$start_month, 1, $start_year);
$days_in_month = date('t', $start_date);
$month_first_day = date('w', $start_date);
$j = $month_first_day;
$num_weeks = 1;
for($i = 1; $i <= $days_in_month; $i++) {
$j++;
if($j == 7) {
$j = 0;
$num_weeks++;
}
}
// if the last day of the month happens to be a Saturday,
// take one off the number of weeks
// because it was being added inside the for loop.
if ($j == 0) {
$num_weeks--;
}
?>
halocastle at yahoo dot com
30-Jun-2008 09:20
30-Jun-2008 09:20
Weeks and days for any month/year combo:
<?php
$m = 2; // February
$Y = 2008;
// constants used here for legibility, use $vars for dynamicon...
define('MONTH_DAYS',date('t', strtotime(date($m . '/01/' . $Y))));
// w:0->6 = Sun->Sat
define('MONTH_FIRST_DAY',date('w', strtotime(date($m . '/01/' . $Y))));
for($i = 1, $j = MONTH_FIRST_DAY, $w = 1;$i <= MONTH_DAYS;$i++) {
$week[$w][$j] = $i;
$j++;
if($j == 7) {
$j = 0;
$w++;
}
}
?>
print_r($week):
-----------------------
Array
(
[1] => Array
(
[5] => 1
[6] => 2
)
[2] => Array
(
[0] => 3
[1] => 4
[2] => 5
[3] => 6
[4] => 7
[5] => 8
[6] => 9
)
[3] => Array
(
[0] => 10
[1] => 11
[2] => 12
[3] => 13
[4] => 14
[5] => 15
[6] => 16
)
[4] => Array
(
[0] => 17
[1] => 18
[2] => 19
[3] => 20
[4] => 21
[5] => 22
[6] => 23
)
[5] => Array
(
[0] => 24
[1] => 25
[2] => 26
[3] => 27
[4] => 28
[5] => 29
)
)
Kavi Siegel
29-Jun-2008 07:18
29-Jun-2008 07:18
I wrote the following function to show a series of drop down boxes to select the date. When provided with a timestamp, that date is selected by default, when none is provided, the current date is selected.
<?php
function chooseDate($timestamp = ""){
if($timestamp == ""){
$timestamp = time();
}
$months = array(null, 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec');
unset($months[0]);
print_r($months);
$out = '<select name="month">';
foreach($months as $key => $month){
if($month == date('M', $timestamp)){
$out .= '<option value="'.$key.'" selected="selected">'.$month.'</option>';
}else{
$out .= '<option value="'.$key.'">'.$month.'</option>';
}
}
$out .= '</select><select name="days">';
for($i = 1; $i <= 32; $i++){
if($i == date('j', $timestamp)){
$out .= '<option value="'.$i.'" selected="selected">'.$i.'</option>';
}else{
$out .= '<option value="'.$i.'">'.$i.'</option>';
}
}
$out .= "</select><select name='year'>";
for($i = date('Y'); $i >= 1970; $i--){
if($i == date('Y', $timestamp)){
$out .= '<option value="'.$i.'" selected="selected">'.$i.'</option>';
}else{
$out .= '<option value="'.$i.'">'.$i.'</option>';
}
}
$out .= "</select>";
return $out;
}
?>
Usage is simple:
<?php
echo chooseDate(); // Will select current date
echo chooseDate(1149566400); // Will select June 6th, 2006
?>
aplarsen
26-Jun-2008 01:12
26-Jun-2008 01:12
@anonymous (12-Jun-2008 08:45):
date("t") returns the last day of the month, not the last working day of the month.
A cleaner example would be as follows:
<?php
function lastworkingday($date)
{
for($lastday=mktime(0,0,0,date("m",$date),
date("t",$date),date("Y",$date));
date("w",$lastday)==0 || date("w",$lastday)==6;
$lastday-=60*60*24);
return date("j",$lastday);
}
?>
kontakt at arthur minus schiwon dot de
18-Jun-2008 03:29
18-Jun-2008 03:29
to get the week of the month simply use:
ceil( date("j") / 7 );
diego at diego dot eng dot br
09-Jun-2008 04:27
09-Jun-2008 04:27
I made a small code to get the last working day of the month:
<?php
$times = strtotime(date("Y")."-".date("m")."-".date("t"));
for ($lastworkingday=0;$lastworkingday==0;$times-=86400)
if (date("w",$times)!=0 && date("w",$times)!=6) $lastworkingday = date("j",$times);
print $lastworkingday;
?>
phil dot taylor at enilsson dot com
25-May-2008 10:37
25-May-2008 10:37
Found this helpful when converting unix dates for use with the ical file format.
<?php
// Converts a unix timestamp to iCal format (UTC) - if no timezone is
// specified then it presumes the uStamp is already in UTC format.
// tzone must be in decimal such as 1hr 45mins would be 1.75, behind
// times should be represented as negative decimals 10hours behind
// would be -10
function unixToiCal($uStamp = 0, $tzone = 0.0) {
$uStampUTC = $uStamp + ($tzone * 3600);
$stamp = date("Ymd\THis\Z", $uStampUTC);
return $stamp;
}
?>
chubby at chicks dot com
23-May-2008 06:54
23-May-2008 06:54
<?php
/**
* Checks wether a date is between an interval
*
* Usage:
*
* // check if today is older than 2008/12/31
* var_dump(currentDayIsInInterval('2008/12/31'));
* // check if today is younger than 2008/12/31
* var_dump(currentDayIsInInterval(null,'2008/12/31'));
* // check if today is between 2008/12/01 and 2008/12/31
* var_dump(currentDayIsInInterval('2008/12/01','2008/12/31'));
*
* Will trigger errors if date is in wrong format, notices if $begin > $end
*
* @param string $begin Date string as YYYY/mm/dd
* @param string $end Date string as YYYY/mm/dd
* @return bool
*/
function currentDayIsInInterval($begin = '',$end = '')
{
$preg_exp = '"[0-9][0-9][0-9][0-9]/[0-9][0-9]/[0-9][0-9]"';
$preg_error = 'Wrong parameter passed to function '.__FUNCTION__.' : Invalide date
format. Please use YYYY/mm/dd.';
$interval_error = 'First parameter in '.__FUNCTION__.' should be smaller than
second.';
if(empty($begin))
{
$begin = 0;
}
else
{
if(preg_match($preg_exp,$begin))
{
$begin = (int)str_replace('/','',$begin);
}
else
{
trigger_error($preg_error,E_USER_ERROR);
}
}
if(empty($end))
{
$end = 99999999;
}
else
{
if(preg_match($preg_exp,$end))
{
$end = (int)str_replace('/','',$end);
}
else
{
trigger_error($preg_error,E_USER_ERROR);
}
}
if($end < $begin)
{
trigger_error($interval_error,E_USER_WARNING);
}
$time = time();
$now = (int)(date('Y',$time).date('m',$time).date('j',$time));
if($now > $end or $now < $begin)
{
return false;
}
return true;
}
?>
wilson dot p dot pereira at itelefonica dot com dot br
21-May-2008 08:37
21-May-2008 08:37
The function below extracts any date time value basead in the string format.
Returns an associative array with day,month,year,hour,min and seg separated.
<?php
function ExtractDateTimeByFormat($strDateTime, $strFormat="dmYHis")
{
//extract the format
$i = 0;
$aFieldOrder = array();
$nFields = 0;
$strExtraction = "";
while(isset($strFormat[$i]))
{
$strField = $strFormat[$i];
switch ( strtolower($strField) )
{
case "D";
case "d";
$aFieldOrder[$nFields] = "d";
$nFields++;
$strExtraction .= "%d";
if(isset($strFormat[$i+1]))
{
$strExtraction .= "%*1c";
}
break;
case "M";
case "m";
$aFieldOrder[$nFields] = "m";
$nFields++;
$strExtraction .= "%d";
if(isset($strFormat[$i+1]))
{
$strExtraction .= "%*1c";
}
break;
case "y";
case "Y";
$aFieldOrder[$nFields] = "y";
$nFields++;
$strExtraction .= "%4d";
if(isset($strFormat[$i+1]))
{
$strExtraction .= "%*1c";
}
break;
case "h";
case "H";
$aFieldOrder[$nFields] = "h";
$nFields++;
$strExtraction .= "%d";
if(isset($strFormat[$i+1]))
{
$strExtraction .= "%*1c";
}
break;
case "i";
$aFieldOrder[$nFields] = "i";
$nFields++;
$strExtraction .= "%d";
if(isset($strFormat[$i+1]))
{
$strExtraction .= "%*1c";
}
break;
case "S";
case "s";
$aFieldOrder[$nFields] = "s";
$nFields++;
$strExtraction .= "%d";
if(isset($strFormat[$i+1]))
{
$strExtraction .= "%*1c";
}
break;
}
$i++;
}
$aValues = array();
$aValues = sscanf($strDateTime,$strExtraction);
return array_combine($aFieldOrder,$aValues);
}
?>
wulf dot kaiser at mpimf-heidelberg dot mpg dot de
21-May-2008 01:00
21-May-2008 01:00
For output formatting of a SAMP based seminar announcement system, i had to fetch the date of every friday of a given month in a given year. Here's what i did:
<?php
$givenYear = $_GET["givenYear"]; # assume "2006"
$givenMonth = $_GET["givenMonth"]; # assume "12"
if ($givenMonth != '12') {
$nextGivenMonth = "1";
$nextGivenYear = $givenYear + 1;}
else {
$nextGivenMonth = $givenMonth + 1;
$nextGivenYear = $givenYear;}
# Get the first weekday of the month
$firstDayOfMonth = date("d", mktime(0, 0, 0, $givenMonth, 1, $givenYear));
$firstWeekDayOfMonth = date("l", mktime(0, 0, 0, $givenMonth, 1, $givenYear));
# Count days to first Friday
switch ($firstWeekDayOfMonth) {
case 'Monday': $numOfDaysToFirstFriday = "4"; break;
case 'Tuesday': $numOfDaysToFirstFriday = "3"; break;
case 'Wednesday': $numOfDaysToFirstFriday = "2"; break;
case 'Thursday': $numOfDaysToFirstFriday = "1"; break;
case 'Friday': $numOfDaysToFirstFriday = "0"; break;
case 'Saturday': $numOfDaysToFirstFriday = "6"