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 — Formatează data/timpul local
Descriere
string date
( string $format
[, int $
timestamp
] )
Returnează un şir formatat conform cu formatul transmis ca parametru al funcţiei, utilizând întregul timestamp sau timpul local dacă nu este utilizat parametrul timestamp .
Notă: Perioada validă a timestamp este cuprinsă, de regulă, între vineri, 13 Decembrie 1901 20:45:54 GMT şi marţi, 19 ianuarie 2038 03:14:07 GMT. (Acestea sunt datele care corespund minimului, respectiv maximului unui întreg cu semn reprezentat pe 32 de biţi.)
Pentru a genera un timestamp dintr-un şir reprezentând o dată, puteţi utiliza funcţia strtotime(). De asemenea, unele sisteme de gestiune a bazelor de date au funcţii care pot converti formatul lor de dată în timestamps (cum ar fi funcţia MySQL UNIX_TIMESTAMP).
Următoarele caractere sunt recunoscute în şirul format :
- a - "am" sau "pm"
- A - "AM" sau "PM"
- B - timpul Swatch Internet
- d - ziua din lună, 2 cifre cu zero iniţial; de exemplu "01" to "31"
- D - ziua din săptămână, în engleză, textual, 3 litere; de exemplu "Fri"
- F - month, textual, long; de exemplu "January"
- g - ora, format de 12 ore, fără zero iniţial; de exemplu "1" până la "12"
- G - ora, format de 24 de ore, fără zero iniţial; de exemplu "0" până la "23"
- h - ora, format 12 ore, cu zero iniţial; de exemplu "01" până la "12"
- H - ora, format 24 de ore, cu zero iniţial; de exemplu "00" până la "23"
- i - minute, cu zero iniţial; de exemplu "00" până la "59"
- I (litera i majusculă) - "1" ora de vară, "0" în caz contrar.
- j - ziua din lună, fără zero iniţial; de exemplu "1" până la "31"
- l (litera 'L' minusculă) - ziua din săptămână, textual, în engleză, scurt; de exemplu "Friday"
- L - valoare booleană pentru anii bisecţi; de exemplu "0" dacă nu e an bisect sau "1" dacă este an bisect
- m - luna, cu zero iniţial; de exemplu "01" până la "12"
- M - luna, textual, în engleză, 3 litere; de exemplu "Jan"
- n - luna fără zero iniţial; de exemplu "1" până la "12"
- O - diferenţa până la ora Greenwich în ore; de exemplu "+0200"
- r - data formatată conform recomandării RFC 822; de exemplu "Thu, 21 Dec 2000 16:01:07 +0200" (adăugată în PHP 4.0.4)
- s - secunde; de exemplu "00" până la "59"
- S - sufixul ordinal englezesc pentru ziua din lună, 2 caractere; de exemplu "th", "nd"
- t - numărul de zile dintr-o lună dată; de exemplu "28" până la "31"
- T - setările de reprezentare a timpului pe un calculator; de exemplu "MDT"
- U - secunde de la începutul epocii UNIX
- w - ziua din săptămână, numerică, de exemplu "0" (duminică) până la "6" (sâmbătă)
- W - numărul săptămânii din an conform ISO-8601; săptămâna începe lunea (adăugată în PHP 4.1.0)
- Y - anul, 4 cifre; de exemplu "1999"
- y - anul, 2 cifre; de exemplu "99"
- z - ziua din an; de exemplu "0" până la "365"
- Z - diferenţa de timp faţă de UTC, în secunde (de exemplu "-43200" până la "43200"). Diferenţele pentru zonele aflate la vest de UTC sunt întotdeauna negative şi celelalte sunt întotdeauna pozitive.
Example #1 Exemplu date()
echo date ("l dS of F Y h:i:s A");
echo "July 1, 2000 este într-o zi de " . date ("l", mktime(0,0,0,7,1,2000));
Puteţi preveni expandarea unui caracter de formatare precedându-l cu un backslash. Dacă astfel ia naştere un caracter escape predefinit este necesară adăugarea încă unui backslash.
Example #2 Caractere escape în funcţia date()
echo date("l \e\s\\t\e \i\\n j"); // va afişa ceva de genul 'Saturday este in 8'
Este posibil să utilizaţi funcţiile date() şi mktime() împreună pentru a găsi date în viitor sau în trecut.
Example #3 Exemplu date() şi mktime()
$miine = mktime (0,0,0,date("m") ,date("d")+1,date("Y"));
$luna_trecuta = mktime (0,0,0,date("m")-1,date("d"), date("Y"));
$anul_viitor = mktime (0,0,0,date("m"), date("d"), date("Y")+1);
Notă: Această modalitate de găsire a datelor din trecut sau viitor este mai demnă de încredere decât simpla adăugare sau scădere de secunde la un timestamp, datorită orei de vară.
Câteva exemple de formatare a datei utilizând funcţia date(). Este recomandat să faceţi escape la toate caracterele din şirul de formatare pe care nu doriţi ca funcţia să le expandeze, precum şi la cele care momentan nu au o semnificaţie, din cel puţin două motive: pot apărea rezultate neaşteptate; alte caractere pot avea o semnificaţie în versiuni viitoare ale PHP. Când faceţi escape ţineţi cont că unele caractere (n, t) capătă semnificaţii speciale. Pentru a preveni acest lucru utilizaţi apostroful pentru încadrarea şirului de formatare.
Example #4 Formatare cu funcţia date()
/* Today is March 10th, 2001, 5:16:18 pm */
$azi = date("F j, Y, g:i a"); // March 10, 2001, 5:16 pm
$azi = date("m.d.y"); // 03.10.01
$azi = date("j, n, Y"); // 10, 3, 2001
$azi = date("Ymd"); // 20010310
$azi = date('h-i-s, j-m-y, it is w Day z '); // 05-16-17, 10-03-01, 1631 1618 6 Fripm01
$azi = date('\e\s\t\e \z\i\u\a \d\e j.'); // este ziua de 10.
$azi = date("D M j G:i:s T Y"); // Sat Mar 10 15:16:08 MST 2001
$azi = date('H:m:s \l \e\s\t\e \l\u\n\a'); // 17:03:17 l este luna
$azi = date("H:i:s"); // 17:16:17
Pentru a formata datele în alte limbi trebuie să utilizaţi funcţiile setlocale() şi strftime().
Vezi, de asemenea, getlastmod(), gmdate(), mktime(), strftime() şi 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"; break;
case 'Sunday': $numOfDaysToFirstFriday = "5"; break;}
# Get first Friday's date
$numOfDaysToFirstFriday = 1 + $numOfDaysToFirstFriday;
$firstFridayOfMonthDate = date("d.m.Y", mktime(0, 0, 0, $givenMonth, $numOfDaysToFirstFriday, $givenYear));
$firstFridayOfMonthDay =