date_timezone_set
I was looking for this for a fee minutes and finally get the solution,
formating a string date;
<?php
$YourDate="2008-06-30"; //This is your valid String Date
$NewFormatedDate=date("d",strtotime ($YourDate)); // Returns the day of the Month = 30
$NewFormatedDate=date("M",strtotime ($YourDate)); // Returns the name of the Month = Jun
?>
date
(PHP 4, PHP 5)
date — Dar formato a una hora/fecha local
Descripción
string date
( string $formato
[, int $marca_de_tiempo
] )
Devuelve una cadena con formato de acuerdo a la cadena de formato dada usando el entero marca_de_tiempo entregado o la hora actual si no se da una marca de tiempo. En otras palabras, marca_de_tiempo es opcional y su valor predeterminado es el valor de time().
Lista de parámetros
- formato
-
El formato de la fecha de salida tipo string. Vea las opciones de formato más adelante.
Los siguientes caracteres son reconocidos en la cadena del parámetro formato Caracter de formato Descripción Valores de ejemplo devueltos Día --- --- d Día del mes, 2 dígitos con ceros iniciales 01 a 31 D Una representación textual de un día, tres letras Mon a Sun j Día del mes sin ceros iniciales 1 a 31 l ('L' minúscula) Una representación textual completa del día de la semana Sunday a Saturday N Representación numérica ISO-8601 del día de la semana (agregado in PHP 5.1.0) 1 (para Lunes) a 7 (para Domingo) S Sufijo ordinal en inglés del dia del mes, 2 caracteres st, nd, rd o th. Funciona bien con j w Representación numérica del día de la semana 0 (para el Domingo) a 6 (para el Sábado) z El día del año (comenzando en 0) 0 a 365 Semana --- --- W Número de la semana del año ISO-8601, las semanas comienzan en Lunes (agregado en PHP 4.1.0) Ejemplo: 42 (la 42va semana del año) Mes --- --- F Una representación textual completa de un mes, como January o March January a December m Representación numérica de un mes, con ceros iniciales 01 a 12 M Una representación textual corta de un mes, tres letras Jan a Dec n Representación numérica de un mes, sin ceros iniciales 1 a 12 t Número de días en el mes dado 28 a 31 Año --- --- L Indica si es un año bisiesto 1 si es un año bisiesto, 0 de lo contrario. o Número de año ISO-8601. Este es el mismo valor que Y, excepto que si el número de semana ISO (W) pertenece al año previo o siguiente, ese año será usado en su lugar. (agregado en PHP 5.1.0) Ejemplos: 1999 o 2003 Y Una representación numérica completa de un año, 4 dígitos Ejemplos: 1999 o 2003 y Una representación de dos dígitos de un año Ejemplos: 99 o 03 Hora --- --- a Ante meridiano y Post meridiano en minúsculas am o pm A Ante meridiano y Post meridiano en mayúsculas AM o PM B Hora Swatch Internet 000 a 999 g formato de 12-horas de una hora sin ceros iniciales 1 a 12 G formato de 24-horas de una hora sin ceros iniciales 0 a 23 h formato de 12-horas de una hora con ceros iniciales 01 a 12 H formato de 24-horas de una hora con ceros iniciales 00 a 23 i Minutos con ceros iniciales 00 a 59 s Segundos, con ceros iniciales 00 a 59 u Milisegundos (agregado en PHP 5.2.2) Ejemplo: 54321 Zona horaria --- --- e Identificador de zona horaria (agregado en PHP 5.1.0) Ejemplos: UTC, GMT, Atlantic/Azores I (i mayúscula) Indica si la fecha están en hora de ahorro de luz diurna 1 si es Hora de Ahorro de Luz Diurna, 0 de lo contrario. O Diferencia con la hora Greenwich (GMT) en horas Ejemplo: +0200 P Diferencia con la hora Greenwich (GMT) con dos-puntos entre las horas y los minutos (agregada en PHP 5.1.3) Ejemplo: +02:00 T Abreviación de zona horaria Ejemplos: EST, MDT ... Z Desplazamiento de la zona horaria en segundos. El desplazamiento para zonas horarias al oeste de UTC es siempre negativo, y el de aquellas al este de UTC es siempre positivo. -43200 a 50400 Fecha/Hora Completa --- --- c Fecha ISO 8601 (agregada en PHP 5) 2004-02-12T15:19:21+00:00 r Fecha en formato » RFC 2822 Ejemplo: Thu, 21 Dec 2000 16:01:07 +0200 U Segundos desde el Epoch Unix (January 1 1970 00:00:00 GMT) Vea también time() Los caracteres no reconocidos en la cadena de formato serán impresos como son. El formato Z siempre devuelve 0 cuando se usa gmdate().
Note: Dado que esta función solo acepta marcas de tiempo tipo integer, el caracter de formato u sólo es útil cuando se usa la función date_format() con marcas de tiempo creadas con date_create() basadas en el usuario.
- timestamp
-
The optional timestamp parameter is an integer Unix timestamp that defaults to the current local time if a timestamp is not given. In other words, it defaults to the value of time().
Valores retornados
Devuelve una cadena de fecha con formate. Si es usado un valor no-numérico en marca_de_tiempo , se devuelve FALSE y un error de nivel E_WARNING es emitido.
Errors/Exceptions
Every call to a date/time function will generate a E_NOTICE if the time zone is not valid, and/or a E_STRICT message if using the system settings or the TZ environment variable. See also date_default_timezone_set()
Registro de cambios
| Versión | Descripción |
|---|---|
| 5.1.0 | El rango válido de una marca de tiempo es típicamente de Fri, 13 Dec 1901 20:45:54 GMT a Tue, 19 Jan 2038 03:14:07 GMT. (Estas son las fechas que corresponden a los valores mínimo y máximo para un entero de 32-bits con signo). Sin embargo, antes de PHP 5.1, este rango estaba limitado desde 01-01-1970 a 19-01-2038 en algunos sistemas (p.ej. Windows). |
| 5.1.0 | Now issues the E_STRICT and E_NOTICE time zone errors. |
| 5.1.1 | Existen algunas constantes útiles de formatos estándar de fecha/hora que pueden usarse para especificar el parámetro formato . |
Ejemplos
Example #1 Ejemplos de date()
<?php
// definir la zona horaria predeterminada a usar. Disponible desde PHP 5.1
date_default_timezone_set('UTC');
// Imprime algo como: Monday
echo date("l");
// Imprime algo como: Monday 15th of August 2005 03:12:46 PM
echo date('l dS \of F Y h:i:s A');
// Imprime: July 1, 2000 is on a Saturday
echo "July 1, 2000 is on a " . date("l", mktime(0, 0, 0, 7, 1, 2000));
/* usar las constantes en el parámetro formato */
// imprime algo como: Mon, 15 Aug 2005 15:12:46 UTC
echo date(DATE_RFC822);
// imprime algo como: 2000-07-01T00:00:00+00:00
echo date(DATE_ATOM, mktime(0, 0, 0, 7, 1, 2000));
?>
Puede prevenir que un caracter reconocido en la cadena de formato sea expandido escapándolo con una barra invertida. Si el caracter con una barra invertida es una secuencia especial, puede que necesite escapar también la barra invertida.
Example #2 Escapar caracteres en date()
<?php
// imprime algo como: Wednesday the 15th
echo date("l \\t\h\e jS");
?>
Es posible usar date() y mktime() juntos para encontrar fechas en el futuro o el pasado.
Example #3 Ejemplo de date() y mktime()
<?php
$manyana = mktime(0, 0, 0, date("m") , date("d")+1, date("Y"));
$ultimo_mes = mktime(0, 0, 0, date("m")-1, date("d"), date("Y"));
$siguiente_anyo = mktime(0, 0, 0, date("m"), date("d"), date("Y")+1);
?>
Note: Esto puede ser más confiable que simplemente sumar o restar el número de segundos en un día o mes de una marca de tiempo debido a las horas de ahorro de luz diurna.
Algunos ejemplos de formato de date(). Note que debe escapar cualquier otro caracter, ya que cualquiera que tenga un significado especial producirá resultados indeseados, y otros caracteres pueden recibir un significado en versiones futuras de PHP. Cuando escape caracteres, asegúrese de usar comillas sencillas para evitar que caracteres como \n se conviertan en saltos de línea.
Example #4 Formato de date()
<?php
// Asumiendo que hoy es: March 10th, 2001, 5:16:18 pm
$hoy = date("F j, Y, g:i a"); // March 10, 2001, 5:16 pm
$hoy = date("m.d.y"); // 03.10.01
$hoy = date("j, n, Y"); // 10, 3, 2001
$hoy = date("Ymd"); // 20010310
$hoy = date('h-i-s, j-m-y, it is w Day z '); // 05-16-17, 10-03-01, 1631 1618 6 Fripm01
$hoy = date('\i\t \i\s \t\h\e jS \d\a\y.'); // It is the 10th day.
$hoy = date("D M j G:i:s T Y"); // Sat Mar 10 15:16:08 MST 2001
$hoy = date('H:m:s \m \i\s\ \m\o\n\t\h'); // 17:03:17 m is month
$hoy = date("H:i:s"); // 17:16:17
?>
Para dar formato a fechas en otros idiomas, debe usar las funciones setlocale() y strftime() en lugar de date().
Notes
Note: Para generar una marca de tiempo a partir de una representación tipo cadena de la fecha, es posible usar strtotime(). Adicionalmente, algunas bases de datos tienen funciones para convertir sus formatos de fecha a marcas de tiempo (como la función » UNIX_TIMESTAMP de MySQL).
Tip
La marca de tiempo del comienzo de la petición está disponible en $_SERVER['REQUEST_TIME'] a partir de PHP 5.1.
add a note
User Contributed Notesdate
desisco.com.ve
04-Jul-2008 06:00
04-Jul-2008 06:00
dmagick at gmail dot com
03-Jul-2008 04:44
03-Jul-2008 04:44
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).
$start_date = mktime(0, 0, 0,$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
01-Jul-2008 06:20
01-Jul-2008 06:20
Weeks and days for any month/year combo:
$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
30-Jun-2008 04:18
30-Jun-2008 04:18
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.
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 $out;
}
Usage is simple:
echo chooseDate(); // Will select current date
echo chooseDate(1149566400); // Will select June 6th, 2006
aplarsen
26-Jun-2008 10:12
26-Jun-2008 10:12
@anonymous (12-Jun-2008 08:45):
date("t") returns the last day of the month, not the last working day of the month.
A cleaner example would be as follows:
<?php
function lastworkingday($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 12:29
18-Jun-2008 12:29
to get the week of the month simply use:
ceil( date("j") / 7 );
diego at diego dot eng dot br
10-Jun-2008 01:27
10-Jun-2008 01:27
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 $lastworkingday;
?>
phil dot taylor at enilsson dot com
26-May-2008 07:37
26-May-2008 07:37
Found this helpful when converting unix dates for use with the ical file format.
// Converts a unix timestamp to iCal format (UTC) - if no timezone is
// specified then it presumes the uStamp is already in UTC format.
// tzone must be in decimal such as 1hr 45mins would be 1.75, behind
// times should be represented as negative decimals 10hours behind
// would be -10
function unixToiCal($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 03:54
23-May-2008 03:54
/**
* 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 < $begin)
{
return false;
}
return true;
}
wilson dot p dot pereira at itelefonica dot com dot br
22-May-2008 05:37
22-May-2008 05:37
The function below extracts any date time value basead in the string format.
Returns an associative array with day,month,year,hour,min and seg separated.
function ExtractDateTimeByFormat($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 10:00
21-May-2008 10:00
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 = date("d", mktime(0, 0, 0, $givenMonth, $numOfDaysToFirstFriday, $givenYear));
# Get the last weekday of the month
$lastDayOfMonth = date("d", strtotime("-1 day", strtotime(date("$nextGivenYear-$nextGivenMonth-01"))));
$lastWeekDayOfMonth = date("l", strtotime("-1 day", strtotime(date("$nextGivenYear-$nextGivenMonth-01"))));
# Count days to last Friday
switch ($lastWeekDayOfMonth) {
case 'Monday': $numOfDaysToLastFriday = "3"; break;
case 'Tuesday': $numOfDaysToLastFriday = "4"; break;
case 'Wednesday': $numOfDaysToLastFriday = "5"; break;
case 'Thursday': $numOfDaysToLastFriday = "6"; break;
case 'Friday': $numOfDaysToLastFriday = "0"; break;
case 'Saturday': $numOfDaysToLastFriday = "1"; break;
case 'Sunday': $numOfDaysToLastFriday = "2"; break;}
# Get last Friday's date
$numOfDaysToLastFriday = $lastDayOfMonth - $numOfDaysToLastFriday;
$lastFridayOfMonthDate = date("d.m.Y", mktime(0, 0, 0, $givenMonth, $numOfDaysToLastFriday, $givenYear));
$lastFridayOfMonthDay = date("d", mktime(0, 0, 0, $givenMonth, $numOfDaysToLastFriday, $givenYear));
$divisor = $lastFridayOfMonthDay - $firstFridayOfMonthDay;
$divisor = $divisor / 7;
global $divisor;
# Get the dates of all Fridays in the given Month (can be either 4 or 5)
if ($divisor=='3') {
$firstFridayOfMonth = date("Y/m/d", mktime(0, 0, 0, $givenMonth, $numOfDaysToFirstFriday, $givenYear));
$secondFridayOfMonth = date("Y/m/d", mktime(0, 0, 0, $givenMonth, $lastFridayOfMonthDay - 14, $givenYear));
$thirdFridayOfMonth = date("Y/m/d", mktime(0, 0, 0, $givenMonth, $lastFridayOfMonthDay - 7, $givenYear));
$lastFridayOfMonth = date("Y/m/d", mktime(0, 0, 0, $givenMonth, $numOfDaysToLastFriday, $givenYear));}
else if ($divisor=='4') {
$firstFridayOfMonth = date("Y/m/d", mktime(0, 0, 0, $givenMonth, $numOfDaysToFirstFriday, $givenYear));
$secondFridayOfMonth = date("Y/m/d", mktime(0, 0, 0, $givenMonth, $lastFridayOfMonthDay - 21, $givenYear));
$thirdFridayOfMonth = date("Y/m/d", mktime(0, 0, 0, $givenMonth, $lastFridayOfMonthDay - 14, $givenYear));
$fourthFridayOfMonth = date("Y/m/d", mktime(0, 0, 0, $givenMonth, $lastFridayOfMonthDay - 7, $givenYear));
$lastFridayOfMonth = date("Y/m/d", mktime(0, 0, 0, $givenMonth, $numOfDaysToLastFriday, $givenYear));}
?>
Comments, suggestions and bugfixes are welcome ;-))
Raymond Irving
26-Mar-2008 04:44
26-Mar-2008 04:44
I have written a little Date Class Library for PHP that supports timestamps for dates greater than 2038 and lesser than 1970.
This library can be used in both PHP4 and PHP5.
Check it out here:
http://xwisdomhtml.com/dateclass.html
boyfilhote at yahoo dot com dot br
21-Mar-2008 10:29
21-Mar-2008 10:29
Find out how many days a month has (including leap-years) in one single line command:
$numberOfDays = date("d", mktime(0, 0, 0, $month + 1, 0, $year));
This is possible because if you set the field "day" as ZERO in MKTIME, it will consider the last day of month-1.
ash at atomic-network dot co dot uk
20-Mar-2008 05:26
20-Mar-2008 05:26
in regards to: [takzik at ebanat dot com]
simplest way of displaying / formatting dates. strtotime()
<?php
# Date: y-m-d => d-m-y
$time =explode("-","2008-01-01");
krsort($time);
print implode("-",$time);
?>
<p>Will return: 01-01-2008.
<?php
# Date: d-m-y => y-m-d
$time =explode("-","01-01-2008");
krsort($time);
print "<p>".implode("-",$time);
?>
<p>Will return: 2008-01-01.
<?php
# Quickest: Y-m-d => American Format
print date("m-d-Y",strtotime("2008-02-01"));
?>
<p>Will return: 02-01-2008.
<?php
# Quickest: Y-m-d => Brittish Format
print date("d.m.Y",strtotime("2008-01-01"));
?>
<p>Will return: 01.01.2008.
Anonymous
17-Mar-2008 06:56
17-Mar-2008 06:56
Useful tool for creating DATE() specs without having to run 35 tests to get it right: http://www.bitbybit.dk/mysql/date_format/ (says mysql, but covers PHP as well)
Dave Schlaegel
17-Mar-2008 05:09
17-Mar-2008 05:09
Here is an easy MySQL way of getting the difference in dates. For me it is more logical to do this on the select than running it though an additional PHP function after selecting the date. But depends on what your doing of course. I hope it helps.
SELECT ABS(DATEDIFF(NOW(),yourdateField)) as dateDiff
Anonymous
29-Feb-2008 10:05
29-Feb-2008 10:05
## This will produce the first day of last month and the last day of last month
## 2008-01-01 2008-01-31
<?php
echo date("Y-m-01", strtotime("-1 month", strtotime(date("Y-m-d"))))." ".date("Y-m-d", strtotime("-1 day", strtotime(date("Y-m-01")))) ?>
jwagner dot DO at NOT dot SPAM dot digilog dot de
21-Feb-2008 11:06
21-Feb-2008 11:06
The PHP4 replacement for ISO8601 posted by fokeyjoe has a little flaw:
The time in ISO is in 24 hour format, so an uppercase H must be used.
Correct format is:
$sISO8601=date('Y-m-d\TH:i:s',$nTimestamp). substr_replace(date('O',$nTimestamp),':',3,0);
Short version for NOW:
$sISO8601=date('Y-m-d\TH:i:s'). substr_replace(date('O'),':',3,0);
Juan Paredes
25-Jan-2008 08:59
25-Jan-2008 08:59
Complementing the information by ZZigc on 28-Dec-2007 07:38, if you want to calculate the number of weeks in a given year, according to the week definition by ISO 8601, the following should be enough:
date('W', mktime(0,0,0,12,28,$year) );
(the last week on a give year always contains 28-Dec)
jc
31-Dec-2007 03:28
31-Dec-2007 03:28
date("W") returns the iso8601 week number, while date("Y") returns the _current_ year. This can lead to odd results. For example today (dec 31, 2007) it returns 1 for the week and of course 2007 for the year. This is not wrong in a strict sense because iso defines this week as the first of 2008 while we still have 2007.
So, if you don't have another way to safely retrieve the year according to the iso8061 week-date - strftime("%G") doesn't work on some systems -, you should be careful when working with date("W").
For most cases strftime("%W") should be a safe replacement.
[edit: Much easier is to use "o" (lower case O) instead of "Y"]
ZZigc
28-Dec-2007 07:38
28-Dec-2007 07:38
I wanted to get the number of weeks for particular year.
Example with date():
<?php
$weeks_in_year = date("W", strtotime("12/31/2007"));
?>
It works for years smaller than current year, but returns '01' when year was the same or bigger as current year.
Not sure if I missed something or maybe misused this function but I couldn't get it to work even with different date representations.
So the workaround was using different function.
Example with strftime():
<?php
$weeks_in_year = strftime("%W",strtotime("12/31/2007"));
?>
Now it works as a charm.
PHP v.4.4.7
june at overlie dot no
19-Dec-2007 03:54
19-Dec-2007 03:54
re: marius at svr dot ro
to anyone using marius' function, it needs some minor fixes (look for a ---->)
<?php
//The function returns the no. of business days between two dates and it skeeps the holidays
function getWorkingDays($startDate,$endDate,$holidays){
//The total number of days between the two dates. We compute the no. of seconds and divide it to 60*60*24
//We add one to inlude both dates in the interval.
$days = (strtotime($endDate) - strtotime($startDate)) / 86400 + 1;
$no_full_weeks = floor($days / 7);
$no_remaining_days = fmod($days, 7);
//It will return 1 if it's Monday,.. ,7 for Sunday
$the_first_day_of_week = date("N",strtotime($startDate));
$the_last_day_of_week = date("N",strtotime($endDate));
//---->The two can be equal in leap years when february has 29 days, the equal sign is added here
//In the first case the whole interval is within a week, in the second case the interval falls in two weeks.
if ($the_first_day_of_week <= $the_last_day_of_week){
if ($the_first_day_of_week <= 6 && 6 <= $the_last_day_of_week) $no_remaining_days--;
if ($the_first_day_of_week <= 7 && 7 <= $the_last_day_of_week) $no_remaining_days--;
}
else{
if ($the_first_day_of_week <= 6) $no_remaining_days--;
//In the case when the interval falls in two weeks, there will be a Sunday for sure
$no_remaining_days--;
}
//The no. of business days is: (number of weeks between the two dates) * (5 working days) + the remainder
//---->february in none leap years gave a remainder of 0 but still calculated weekends between first and last day, this is one way to fix it
$workingDays = $no_full_weeks * 5;
if ($no_remaining_days > 0 )
{
$workingDays += $no_remaining_days;
}
//We subtract the holidays
foreach($holidays as $holiday){
$time_stamp=strtotime($holiday);
//If the holiday doesn't fall in weekend
if (strtotime($startDate) <= $time_stamp && $time_stamp <= strtotime($endDate) && date("N",$time_stamp) != 6 && date("N",$time_stamp) != 7)
$workingDays--;
}
return $workingDays;
}
//Example:
$holidays=array("2006-12-25","2006-12-26","2007-01-01");
echo getWorkingDays("2006-12-22","2007-01-06",$holidays)
// => will return 8
?>
Otherwise, I found this very useful, thanks marius:)
Bill at wLathrop com
14-Dec-2007 01:56
14-Dec-2007 01:56
For JasonLFunk
I did some testing on the occurrence for a given date within the month (i.e 1st Monday, 2nd Wednesday, 3rd Friday, etc.).
where $dDate is a getdate() array
intval(($dDate['mday']-1)/7)+1
Returns an integer representing the week for a given date. I tested on a complete calendar month and it seems to work well.
I then convert to a string and compare to a string list of values to see if it is in the list. If it is - it qualifies. So, my list of values might be '2,4' representing every 2nd and 4th occurrence.
bikinyboy at example dot com
12-Dec-2007 04:44
12-Dec-2007 04:44
This function is like date, but it "speaks" Hungarian (or an other language)
<?php
/*
these are the hungarian additional format characters
ö: full textual representation of the day of the week
Ö: full textual representation of the day of the week (first character is uppercase),
ő: short textual representation of the day of the week,
Ő: short textual representation of the day of the week (first character is uppercase),
ü: full textual representation of a month
Ü: full textual representation of a month (first character is uppercase),
ű: short textual representation of a month
Ű: short textual representation of a month (first character is uppercase),
*/
function date_hu($formatum, $timestamp=0) {
if (($timestamp <= -1) || !is_numeric($timestamp)) return '';
$q['ö'] = array(-1 => 'w', 'vasárnap', 'hétfő', 'kedd', 'szerda', 'csütörtök', 'péntek', 'szombat');
$q['Ö'] = array(-1 => 'w', 'Vasárnap', 'Hétfő', 'Kedd', 'Szerda', 'Csütörtök', 'Péntek', 'Szombat');
$q['ő'] = array(-1 => 'w', 'va', 'hé', 'ke', 'sze', 'csü', 'pé', 'szo');
$q['Ő'] = array(-1 => 'w', 'Va', 'Hé', 'Ke', 'Sze', 'Csü', 'Pé', 'Szo');
$q['ü'] = array(-1 => 'n', '', 'január', 'február', 'március', 'április', 'május', 'június', 'július', 'augusztus', 'szeptember', 'október', 'november', 'december');
$q['Ü'] = array(-1 => 'n', '', 'Január', 'Február', 'Március', 'Április', 'Május', 'Június', 'Július', 'Augusztus', 'Szeptember', 'Október', 'November', 'December');
$q['ű'] = array(-1 => 'n', '', 'jan', 'febr', 'márc', 'ápr', 'máj', 'júni', 'júli', 'aug', 'szept', 'okt', 'nov', 'dec');
$q['Ű'] = array(-1 => 'n', '', 'Jan', 'Febr', 'Márc', 'Ápr', 'Máj', 'Júni', 'Júli', 'Aug', 'Szept', 'Okt', 'Nov', 'Dec');
if ($timestamp == 0)
$timestamp = time();
$temp = '';
$i = 0;
while ( (strpos($formatum, 'ö', $i) !== FALSE) || (strpos($formatum, 'Ö', $i) !== FALSE) ||
(strpos($formatum, 'ő', $i) !== FALSE) || (strpos($formatum, 'Ő', $i) !== FALSE) ||
(strpos($formatum, 'ü', $i) !== FALSE) || (strpos($formatum, 'Ü', $i) !== FALSE) ||
(strpos($formatum, 'ű', $i) !== FALSE) || (strpos($formatum, 'Ű', $i) !== FALSE)) {
$ch['ö']=strpos($formatum, 'ö', $i);
$ch['Ö']=strpos($formatum, 'Ö', $i);
$ch['ő']=strpos($formatum, 'ő', $i);
$ch['Ő']=strpos($formatum, 'Ő', $i);
$ch['ü']=strpos($formatum, 'ü', $i);
$ch['Ü']=strpos($formatum, 'Ü', $i);
$ch['ű']=strpos($formatum, 'ű', $i);
$ch['Ű']=strpos($formatum, 'Ű', $i)