date
John Sherwood says:
or you could use
mysql_select("SELECT UNIX_TIMESTAMP(fieldname) FROM tablename"), which would give you the date in seconds since unix epoch, and which you could compare to time().
However the datetime on the database server may not exactly match the datetime on the machine executing the PHP script.
Maybe better to get both at the same time - eg:
mysql_select("SELECT UNIX_TIMESTAMP(fieldname) AS `a`, UNIX_TIMESTAMP() AS `b` FROM tablename")
getdate
(PHP 4, PHP 5)
getdate — Get date/time information
Description
array getdate
([ int $timestamp
] )
Returns an associative array containing the date information of the timestamp , or the current local time if no timestamp is given.
Parameters
Return Values
Returns an associative array of information related to the timestamp . Elements from the returned associative array are as follows:
| Key | Description | Example returned values |
|---|---|---|
| "seconds" | Numeric representation of seconds | 0 to 59 |
| "minutes" | Numeric representation of minutes | 0 to 59 |
| "hours" | Numeric representation of hours | 0 to 23 |
| "mday" | Numeric representation of the day of the month | 1 to 31 |
| "wday" | Numeric representation of the day of the week | 0 (for Sunday) through 6 (for Saturday) |
| "mon" | Numeric representation of a month | 1 through 12 |
| "year" | A full numeric representation of a year, 4 digits | Examples: 1999 or 2003 |
| "yday" | Numeric representation of the day of the year | 0 through 365 |
| "weekday" | A full textual representation of the day of the week | Sunday through Saturday |
| "month" | A full textual representation of a month, such as January or March | January through December |
| 0 | Seconds since the Unix Epoch, similar to the values returned by time() and used by date(). | System Dependent, typically -2147483648 through 2147483647. |
Examples
Example #1 getdate() example
<?php
$today = getdate();
print_r($today);
?>
The above example will output something similar to:
Array ( [seconds] => 40 [minutes] => 58 [hours] => 21 [mday] => 17 [wday] => 2 [mon] => 6 [year] => 2003 [yday] => 167 [weekday] => Tuesday [month] => June [0] => 1055901520 )
add a note
User Contributed Notesgetdate
Anonymous
04-Apr-2008 09:38
04-Apr-2008 09:38
Chris
26-Mar-2008 10:54
26-Mar-2008 10:54
This function by John Sherwood does the opposite:
function pastdate($t)
{
if (strtotime($t) < time())
return false;
return true;
}
When the current time has passed $t it ought to be true.
The correct answer can be given by this simple 1-liner:
function pastdate($t)
{
return (strtotime($t) < time());
}
timforte at gmail dot com
10-Jan-2008 09:07
10-Jan-2008 09:07
It's worth noting that this is local time, not UTC/GMT - gmgetdate doesn't exist :(.
The most logical way to handle date arithmetic without hitting DST problems is to work in UTC...
function add_days($my_date,$numdays) {
$date_t = strtotime($my_date.' UTC');
return gmdate('Y-m-d',$date_t + ($numdays*86400));
}
[it's even faster if you use gmmktime instead of strtotime]
Nick Reale
12-Apr-2007 09:15
12-Apr-2007 09:15
Anyone Interested in Generating dates for week, last week, month, last month, quarter, last quarter, YTD, Last YTD, Last Year can use this simple code.
It defaults to the date format YYYY-MM-DD but you can adjust it in the script.
<?
$t=getdate();
$today=date('Y-m-d',$t[0]);
//This Week//
$start=$t[0]-(86400*$t[wday]);
$twstart=date('Y-m-d',$start);
//Last Week//
$lwstart=$start-604800;
$lwend=$lwstart+518400;
$lwstart=date('Y-m-d',$lwstart);
$lwend=date('Y-m-d',$lwend);
//This Month//
$tmstart="$t[year]-$t[mon]-01";
//Last Month//
if($t[mon]=="1"){
$lmstart="2007-12-01";
}
else {
$lmstart="$t[year]-".($t[mon]-1)."-01";
}
$lmmonth=($t[mon]-1);
if($lmmonth=="4" OR $lmmonth=="5" OR $lmmonth=="9" OR $lmmonth=="11"){
$lmend="$t[year]-$lmmonth-30";
}
elseif($t[mon]=="2"){
$lmend="$t[year]-$lmmonth-28";
}
else {
$lmend="$t[year]-$lmmonth-31";
}
//This Quarter//
if($t[mon]=="1" OR $t[mon]=="2" OR $t[mon]=="3"){
$tqstart="$t[year]-01-01";
$tqend="$t[year]-03-31";
}
elseif($t[mon]=="4" OR $t[mon]=="5" OR $t[mon]=="6"){
$tqstart="$t[year]-04-01";
$tqend="$t[year]-06-30";
}
elseif($t[mon]=="7" OR $t[mon]=="8" OR $t[mon]=="9"){
$tqstart="$t[year]-07-01";
$tqend="$t[year]-09-30";
}
else {
$tqstart="$t[year]-10-01";
$tqend="$t[year]-12-31";
}
//Last Quarter//
if($t[mon]=="1" OR $t[mon]=="2" OR $t[mon]=="3"){
$lwstart=($t[year]-1)."-10-01";
$lwend=($t[year]-1)."-12-31";
}
elseif($t[mon]=="4" OR $t[mon]=="5" OR $t[mon]=="6") {
$lqstart="$t[year]-01-01";
$lqend="$t[year]-03-31";
}
elseif($t[mon]=="7" OR $t[mon]=="8" OR $t[mon]=="9"){
$lqstart="$t[year]-04-01";
$lqend="$t[year]-06-30";
}
else {
$lqstart="$t[year]-07-01";
$lqend="$t[year]-09-30";
}
//Year To Date//
$ystart="$t[year]-01-01";
//Last Year To Same Date//
$lystart=($t[year]-1)."-01-01";
$lytend=($t[0]-31536000);
$lytend=date('Y-m-d',$lytend);
//Last Year//
$lyend=($t[year]-1)."-12-31";
echo "This Week<br>Start $twstart<br>Finish $today<br><br>";
echo "Last Week<br>Start $lwstart<br>Finish $lwend<br><br>";
echo "This Month<br>Start $tmstart<br>Finish $today<br><br>";
echo "Last Month<br>Start $lmstart<br>Finish $lmend<br><br>";
echo "This Quarter<br>Start $tqstart<br>Finish $today<br><br>";
echo "Last Quarter<br>Start $lqstart<br>Finish $lqend<br><br>";
echo "Year To Date<br>Start $ystart<br>Finish $today<br><br>";
echo "Last Year To Date<br>Start $lystart<br>Finish $lytend<br><br>";
echo "Last Year<br>Start $lystart<br>Finish $lyend<br><br>";
?>
andre at anlex dot co dot za
13-Dec-2006 05:38
13-Dec-2006 05:38
I thought best to show a posseble way to go about bypassing the end month issue where the first day in a new month will have the monday of the week that it falls in - in the old month. Use the numbering of days as the constant and work you way from there.
Example:
<?php
//-----------------------------
$now = time();
$num = date("w");
if ($num == 0)
{ $sub = 6; }
else { $sub = ($num-1); }
$WeekMon = mktime(0, 0, 0, date("m", $now) , date("d", $now)-$sub, date("Y", $now)); //monday week begin calculation
$todayh = getdate($WeekMon); //monday week begin reconvert
$d = $todayh[mday];
$m = $todayh[mon];
$y = $todayh[year];
echo "$d-$m-$y"; //getdate converted day
?>
Allot less code makes everyone happy..
Jared Armstrong
09-Dec-2006 11:05
09-Dec-2006 11:05
A nice little function I wrote to determine what number occurrence weekday it is of the month for a given timestamp. (I.e. 2nd Friday, or the 3rd Thursday)
Eg: print_r(getWeekdayOccurrence(mktime(0, 0, 0, 12, 1, 2006)));
Outputs: Array ( [0] => 1 [1] => Friday ) [The first friday]
Eg. print_r(getWeekdayOccurrence(mktime(0, 0, 0, 8, 17, 2009)));
Outputs: Array ( [0] => 3 [1] => Monday ) [The third Monday]
function getWeekdayOccurrence($time) {
$month = intval(date("m", $time)); $day = intval(date("d", $time));
for ($i = 0; $i < 7; $i++) {
$days[] = date("l", mktime(0, 0, 0, $month, ($i+1), date("Y", $time)));
}
$posd = array_search(date("l", $time), $days);
$posdm = array_search($days[0], $days) - $posd; /
return array((($day+$posdm+6)/7), $days[$posd]);
}
cesar at nixar dot org
22-Oct-2006 09:49
22-Oct-2006 09:49
<?php
/**
* This function is similar to getdate() but it returns
* the month information.
*
* Returns an associative array containing the month
* information of the parameters, or the current month
* if no parameters are given.
*
*/
function getmonth ($month = null, $year = null)
{
// The current month is used if none is supplied.
if (is_null($month))
$month = date('n');
// The current year is used if none is supplied.
if (is_null($year))
$year = date('Y');
// Verifying if the month exist
if (!checkdate($month, 1, $year))
return null;
// Calculating the days of the month
$first_of_month = mktime(0, 0, 0, $month, 1, $year);
$days_in_month = date('t', $first_of_month);
$last_of_month = mktime(0, 0, 0, $month, $days_in_month, $year);
$m = array();
$m['first_mday'] = 1;
$m['first_wday'] = date('w', $first_of_month);
$m['first_weekday'] = strftime('%A', $first_of_month);
$m['first_yday'] = date('z', $first_of_month);
$m['first_week'] = date('W', $first_of_month);
$m['last_mday'] = $days_in_month;
$m['last_wday'] = date('w', $last_of_month);
$m['last_weekday'] = strftime('%A', $last_of_month);
$m['last_yday'] = date('z', $last_of_month);
$m['last_week'] = date('W', $last_of_month);
$m['mon'] = $month;
$m['month'] = strftime('%B', $first_of_month);
$m['year'] = $year;
return $m;
}
// Output
print_r(getmonth(11, 1978));
print_r(getmonth());
?>
John Sherwood
14-May-2006 12:10
14-May-2006 12:10
In response to the "Simple routine for determining whether a date in mySQL format has gone past":
function pastdate($t)
{
if (strtotime($t) < time())
return false;
return true;
}
or you could use
mysql_select("SELECT UNIX_TIMESTAMP(fieldname) FROM tablename"), which would give you the date in seconds since unix epoch, and which you could compare to time().
Cas_AT_NUY_DOT_INFO
04-Mar-2006 06:47
04-Mar-2006 06:47
// This functions calculates the next date only using business days
// 2 parameters, the startdate and the number of businessdays to add
function calcduedate($datecalc,$duedays) {
$i = 1;
while ($i <= $duedays) {
$datecalc += 86400; // Add a day.
$date_info = getdate( $datecalc );
if (($date_info["wday"] == 0) or ($date_info["wday"] == 6) ) {
$datecalc += 86400; // Add a day.
continue;
}
$i++;
}
return $datecalc ;
}
leo25in at yahoo dot com
11-May-2005 06:17
11-May-2005 06:17
getting weekday(actual date) from any give date.
function cal_date($wday,$tstamp)
{
return $tstamp-($wday*(24*3600));
}
function getweekday($m,$d,$y)
{
$tstamp=mktime(0,0,0,$m,$d,$y);
$Tdate = getdate($tstamp);
$wday=$Tdate["wday"];
switch($wday)
{
case 0;
$wstamp=cal_date($wday,$tstamp);
//echo date("Y-m-d",$wstamp);
break;
case 1;
$wstamp=cal_date($wday,$tstamp);
//echo date("Y-m-d",$wstamp);
break;
case 2;
$wstamp=cal_date($wday,$tstamp);
//echo date("Y-m-d",$wstamp);
break;
case 3;
$wstamp=cal_date($wday,$tstamp);
//echo date("Y-m-d",$wstamp);
break;
case 4;
$wstamp=cal_date($wday,$tstamp);
//echo date("Y-m-d",$wstamp);
break;
case 5;
$wstamp=cal_date($wday,$tstamp);
//echo date("Y-m-d",$wstamp);
break;
case 6;
$wstamp=cal_date($wday,$tstamp);
//echo date("Y-m-d",$wstamp);
break;
}
$w["day"]=date("d",$wstamp);
$w["month"]=date("m",$wstamp);
$w["year"]=date("Y",$wstamp);
return $w;
}
Liis make
16-Sep-2004 04:22
16-Sep-2004 04:22
function win2unix($date_string,$date_timestamp)
{
$epoch_diff = 11644473600; // difference 1601<>1970 in seconds. see reference URL
$date_timestamp = $date_timestamp * 0.0000001;
$unix_timestamp = $date_timestamp - $epoch_diff;
echo date($date_string,$unix_timestamp);
}
getisomonday($year, $week)
21-Apr-2004 03:58
21-Apr-2004 03:58
getdate does not convert week numbers. this function relies on strftime to find a timestamp that falls on the monday of specified year and ISO week:
<?php function getisomonday($year, $week) {
# check input
$year = min ($year, 2038); $year = max ($year, 1970);
$week = min ($week, 53); $week = max ($week, 1);
# make a guess
$monday = mktime (1,1,1,1,7*$week,$year);
# count down to week
while (strftime('%V', $monday) != $week)
$monday -= 60*60*24*7;
# count down to monday
while (strftime('%u', $monday) != 1)
$monday -= 60*60*24;
# got it
return $monday;
} ?>
Yura Pylypenko (plyrvt at mail dot ru)
15-Sep-2003 07:29
15-Sep-2003 07:29
In addition to canby23 at ms19 post:
It's a very bad idea to consider day having 24 hours (86400 secs), because some days have 23, some - 25 hours due to daylight saving changes. Using of mkdate() and strtotime() is always preferred. strtotime() also has a very nice behaviour of datetime manipulations:
<?php
echo strtotime ("+1 day"), "\n";
echo strtotime ("+1 week"), "\n";
echo strtotime ("+1 week 2 days 4 hours 2 seconds"), "\n";
echo strtotime ("next Thursday"), "\n";
echo strtotime ("last Monday"), "\n";
?>
intronis
11-Sep-2003 12:04
11-Sep-2003 12:04
When adding a timestamp to a database from php, be carefule because if your DB Server is a different computer than your webserver, the NOW() function in the SQL will use the DB Server's time, and not the web server's. You can use NTP to synch the times on both computers.
logan dot hall at asu dot edu
11-Mar-2002 01:32
11-Mar-2002 01:32
It seems that 'yday' (the day of the year) that php produces is one less than what the unix 'date +%j' produces.
Not sure why this is, but I would guess that php uses 0-365 rather than 1-366 like unix does. Just something to be careful of.
ih2 at morton-fraser dot com
17-Oct-2000 06:01
17-Oct-2000 06:01
To do comparisons on dates stored in mysql db against 7 days ago, 1 month ago etc use the following:
$last_week = date("Y-m-d", mktime(0,0,0, date(m), date(d)-7,date(Y)));
if($date > $last_week)
{
etc.
This allows for intelligent looping i.e. works at start/end of month/year
I have noticed other postings re this and they have not worked for me.Hope this helps.