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I have project built using laravel and a I have to build a function that counts all the complete quarters that are in the selected date range - the dates used are inserted via input.
Here are the quarters(i used numerical representations for the months)
01 - 03 first quarter
04 - 06 second quarter
07 - 09 third quarter
10 - 12 forth quarter
I would really appreciate your help,because I've been at it for an entire day now and basically have nothing to show for it,i thing I've been trying so hard i'm actually at the point where i'm so tired, i can t think straight.
I do have some code but it;s worthless, because it doesn't work, and any kind of idea or snippet of code is welcomed.
Thanks for your help in advance.
I managed to do this using multiple functions; basically, if this is needed for chart statistics, then a more specific approach might be the case.
I have done this in Laravel with timestamp dates as input (this code can be adapted for getting semesters also :) , it works and is already tested):
public static function getQuartersBetween($start_ts, $end_ts)
{
$quarters = [];
$months_per_year = [];
$years = self::getYearsBetween($start_ts, $end_ts);
$months = self::getMonthsBetween($start_ts, $end_ts);
foreach ($years as $year) {
foreach ($months as $month) {
if ($year->format('Y') == $month->format('Y')) {
$months_per_year[$year->format('Y')][] = $month;
}
}
}
foreach ($months_per_year as $year => $months) {
$january = new Date('01-01-' . $year);
$march = new Date('01-03-' . $year);
$april = new Date('01-04-' . $year);
$june = new Date('01-06-' . $year);
$july = new Date('01-07-' . $year);
$september = new Date('01-09-' . $year);
$october = new Date('01-10-' . $year);
$december = new Date('01-12-' . $year);
if (in_array($january, $months) && in_array($march, $months)) {
$quarter_per_year['label'] = 'T1 / ' . $year;
$quarter_per_year['start_day'] = $january->startOfMonth();
$quarter_per_year['end_day'] = $march->endOfMonth()->endOfDay();
array_push($quarters, $quarter_per_year);
}
if (in_array($april, $months) && in_array($june, $months)) {
$quarter_per_year['label'] = 'T2 / ' . $year;
$quarter_per_year['start_day'] = $april->startOfMonth();
$quarter_per_year['end_day'] = $june->endOfMonth()->endOfDay();
array_push($quarters, $quarter_per_year);
}
if (in_array($july, $months) && in_array($september, $months)) {
$quarter_per_year['label'] = 'T3 / ' . $year;
$quarter_per_year['start_day'] = $july->startOfMonth();
$quarter_per_year['end_day'] = $september->endOfMonth()->endOfDay();
array_push($quarters, $quarter_per_year);
}
if (in_array($october, $months) && in_array($december, $months)) {
$quarter_per_year['label'] = 'T4 / ' . $year;
$quarter_per_year['start_day'] = $october->startOfMonth();
$quarter_per_year['end_day'] = $december->endOfMonth()->endOfDay();
array_push($quarters, $quarter_per_year);
}
}
return $quarters;
}
and getting the years between:
public static function getYearsBetween($start_ts, $end_ts, $full_period = false)
{
$return_data = [];
$current = mktime(0, 0, 0, date('m', $start_ts), date('d', $start_ts), date('Y', $start_ts));
while ($current < $end_ts) {
$temp_date = $current;
$year = new Date($temp_date);
$return_data[] = $year;
$current = strtotime("+1 year", $current); // add a year
}
if ($full_period) {
$return_data[] = $end_ts;
}
return $return_data;
}
, also getting the months needed
public static function getMonthsBetween($start_ts, $end_ts, $full_period = false)
{
$return_data = $month_list = [];
$current = mktime(0, 0, 0, date('m', $start_ts), date('d', $start_ts), date('Y', $start_ts));
while ($current <= $end_ts) {
$temp_date = $current;
$date = new Date($temp_date);
$month_list[] = $date;
$current = strtotime("+1 month", $current); // add a month
}
$start_date_last_month = new Date(array_first($month_list));
$start_date_last_month = $start_date_last_month->startOfMonth()->format('m-d');
$temp_end_date = new Date($start_ts);
$temp_end_date = $temp_end_date->format('m-d');
if ($start_date_last_month < $temp_end_date) {
array_shift($month_list);
}
$end_date_last_month = new Date(end($month_list));
$current_day_month = $end_date_last_month->endOfMonth()->format('m-d');
$temp_end_date = new Date($end_ts);
$end_day_of_month = $temp_end_date->format('m-d');
if ($end_day_of_month < $current_day_month) {
array_pop($month_list);
}
if (count($month_list) == 0) {
$month_list[] = $end_date_last_month->subMonth();
}
$return_data = $month_list;
if ($full_period) {
$return_data[] = $end_ts;
}
return $return_data;
}
You can do something like in this example:
$February = 2;
$October = 10;
$completedQuarters = ceil($October/3) - ceil($February/3); // = 3
What about the quarter in which the date range starts, should it also count? If it should only count if it begins in the first month of a quarter you can check for it like this:
$completedQuarters = ceil($October/3) - ceil($February/3) -1; // = 2
if($February-1%3 == 0) $completedQuarters += 1;
You´re description is not very clear, let me know if that´s what you had in mind.
Not sure if the following is what you are meaning but might be useful
$date_start='2015/03/12';
$date_end='2017/11/14';
$timezone=new DateTimeZone('Europe/London');
$start=new DateTime( $date_start, $timezone );
$end=new DateTime( $date_end, $timezone );
$difference = $end->diff( $start );
$months = ( ( $difference->format('%y') * 12 ) + $difference->format('%m') );
$quarters = intval( $months / 3 );
printf( 'Quarters between %s and %s is %d covering %d months', $start->format('l, jS F Y'), $end->format('l, jS F Y'), $quarters, $months );
/*
This will output
----------------
Quarters between Thursday, 12th March 2015 and Tuesday, 14th November 2017 is 10 covering 32 months
*/
Something like this in the function and you should be set.
use Carbon\Carbon;
$first = Carbon::parse('2012-1-1'); //first param
$second = Carbon::parse('2014-9-15'); //second param
$fY = $first->year; //2012
$fQ = $first->quarter; //1
$sY = $second->year; //2014
$sQ = $second->quarter; //3
$n = 0; //the number of quarters we have counted
$i = 0; //an iterator we will use to determine if we are in the first year
for ($y=$fY; $y < $sY; $y++, $i++) { //for each year less than the second year (if any)
$s = ($i > 0) ? 1 : $fQ; //determine the starting quarter
for ($q=$s; $q <= 4; $q++) { //for each quarter
$n++; //count it
}
}
if ($sY > $fY) { //if both dates are not in the same year
$n = $n + $sQ; //total is the number of quarters we've counted plus the second quarter value
} else {
for ($q=$fQ; $q <= $sQ; $q++) { //for each quarter between the first quarter and second
$n++; //count it
}
}
print $n; //the value to return (11)
Let's say that I have two dates:
$initialDate = '08/10/2015 09:30:24 am';
$finalDate = '15/10/2015 15:47:38 pm';
$holiday = '12/10/2015';
I have to consider the hour of these days.
Hours to consider : 8 hours per day;
Start : 8 pm
End: 18 pm (24 hours format )
Lunch break start: 12:00 pm
Lunch break end: 14:00 pm
Example 1 : From 08/10/2015 10:00:00 to 09/10/2015 17:00:00 results 13 working hours. ( excludes lunch break )
Example 2 : From 08/10/2015 14:00:00 to 09/10/2015 18:00:00 results 12 working hours. ( Do not exclude 2 hours from begin date, because starts after 14:00 pm, lunch break )
Example 3 : From 08/10/2015 16:00:00 to 09/10/2015 18:00:00 results 10 working hours. ( Do not exclude 2 hours from begin date, because starts after 14:00 pmm lunch break )
Exampld 4 : From 08/10/2015 08:00:00 to 09/10/2015 11:00:00 results 14 working hours. ( Exclude 2 hours from begin date, and do not exclude 2 hours from end date, because isn't after 14:00 pm )
And I have to calculate the working hours and working days between those two dates, excluding weekends and Holidays, how can I do that ? I'm using PHP.
PS: I Already have something, but without lunch break... I made a research here on StackOverFlow.
Code:
function get_workdays($dataInicial,$dataFinal){
// arrays
$days_array = array();
$skipdays = array("Saturday", "Sunday");
$skipdates = get_feriados();
// other variables
$i = 0;
$current = $dataInicial;
if($current == $dataFinal) // same dates
{
$timestamp = strtotime($dataInicial);
if (!in_array(date("l", $timestamp), $skipdays)&&!in_array(date("Y-m-d", $timestamp), $skipdates)) {
$days_array[] = date("Y-m-d",$timestamp);
}
}
elseif($current < $dataFinal) // different dates
{
while ($current < $dataFinal) {
$timestamp = strtotime($dataInicial." +".$i." day");
if (!in_array(date("l", $timestamp), $skipdays)&&!in_array(date("Y-m-d", $timestamp), $skipdates)) {
$days_array[] = date("Y-m-d",$timestamp);
}
$current = date("Y-m-d",$timestamp);
$i++;
}
}
return $days_array;
}
function get_feriados(){
$dateAno = Date('Y');
$days_array = array(
$dateAno.'-10-12', // Padroeira do Brasil/ Dias das Crianças
$dateAno.'-11-02', // Finados
$dateAno.'-12-25' // Finados
);
return $days_array;
}
date_default_timezone_set('America/Sao_Paulo');
$dateAno = Date('Y');
$dataInicial = Date('08/10/2015 H:i');
$dataFinal = Date('13/10/2015 H:i');
// timestamps
$from_timestamp = strtotime(str_replace('/', '-', $dataInicial));
$to_timestamp = strtotime(str_replace('/', '-', $dataFinal));
// work day seconds
$workday_start_hour = 9;
$workday_end_hour = 17;
$workday_seconds = ($workday_end_hour - $workday_start_hour)*3600;
// work days beetwen dates, minus 1 day
$from_date = date('Y-m-d',$from_timestamp);
$to_date = date('Y-m-d',$to_timestamp);
$workdays_number = count(get_workdays($from_date,$to_date))-1;
$workdays_number = $workdays_number<0 ? 0 : $workdays_number;
// start and end time
$start_time_in_seconds = date("H",$from_timestamp)*3600+date("i",$from_timestamp)*60;
$end_time_in_seconds = date("H",$to_timestamp)*3600+date("i",$to_timestamp)*60;
// final calculations
$working_hours = ($workdays_number * $workday_seconds + $end_time_in_seconds - $start_time_in_seconds) / 86400 * 24;
print_r('<br/> Horas úteis '.$working_hours);
}
But don't consider two hours of break lunch. Can somebody please help me ?
If you use PHP 5.3 or higher, you can do this:
$datefrom = DateTime::createFromFormat('d/m/Y', '08/10/2015');
$dateto = DateTime::createFromFormat('d/m/Y', '15/10/2015');
$interval = $datefrom->diff($dateto);
$days = intval($interval->format('%a'));
Also you can remove holidays with if:
if ($datetime1->getTimestamp() < $holiday->getTimestamp() and $datetime2->getTimestamp() > $holiday->getTimestamp()) $days--;
Calculate hours between two days:
$datefrom = DateTime::createFromFormat('d/m/Y H:i:s', '08/10/2015 12:51:34');
$dateto = DateTime::createFromFormat('d/m/Y H:i:s', '15/10/2015 13:14:56');
$hours = intval($interval->format('%a')) * 24 + $interval->format('%h');
You can calculate hours of launches sum and then subtract it.
How to ignore weekends or calculate ignore days:
while($dateto->getTimestamp() > $datefrom->getTimestamp()) {
if (in_array($datefrom->format('w'), array('0','6'))) $ignore_days += 1;
$datefrom->modify('+1 day');
}
I expect this will do all you want. But I changed the datetime format as follows. Check it. Used less comments. If any query, please ask. Holidays are arrays, add and remove as required.
Times between 12:00 - 14:00 is handled.
Times below 08:00 is handled.
Times above 18:00 is handled.
<?php
$initialDate = '2015-10-13 08:15:00'; //start date and time in YMD format
$finalDate = '2015-10-14 11:00:00'; //end date and time in YMD format
$holiday = array('2015-10-12'); //holidays as array
$noofholiday = sizeof($holiday); //no of total holidays
//create all required date time objects
$firstdate = DateTime::createFromFormat('Y-m-d H:i:s',$initialDate);
$lastdate = DateTime::createFromFormat('Y-m-d H:i:s',$finalDate);
if($lastdate > $firstdate)
{
$first = $firstdate->format('Y-m-d');
$first = DateTime::createFromFormat('Y-m-d H:i:s',$first." 00:00:00" );
$last = $lastdate->format('Y-m-d');
$last = DateTime::createFromFormat('Y-m-d H:i:s',$last." 23:59:59" );
$workhours = 0; //working hours
for ($i = $first;$i<=$last;$i->modify('+1 day') )
{
$holiday = false;
for($k=0;$k<$noofholiday;$k++) //excluding holidays
{
if($i == $holiday[$k])
{
$holiday = true;
break;
} }
$day = $i->format('l');
if($day === 'Saturday' || $day === 'Sunday') //excluding saturday, sunday
$holiday = true;
if(!$holiday)
{
$ii = $i ->format('Y-m-d');
$f = $firstdate->format('Y-m-d');
$l = $lastdate->format('Y-m-d');
if($l ==$f )
$workhours +=sameday($firstdate,$lastdate);
else if( $ii===$f)
$workhours +=firstday($firstdate);
else if ($l ===$ii)
$workhours +=lastday($lastdate);
else
$workhours +=8;
}
}
echo $workhours; //echo the hours
}
else
echo "lastdate less than first date";
function sameday($firstdate,$lastdate)
{
$fmin = $firstdate->format('i');
$fhour = $firstdate->format('H');
$lmin = $lastdate->format('i');
$lhour = $lastdate->format('H');
if($fhour >=12 && $fhour <14)
$fhour = 14;
if($fhour <8)
$fhour =8;
if($fhour >=18)
$fhour =18;
if($lhour<8)
$lhour=8;
if($lhour>=12 && $lhour<14)
$lhour = 14;
if($lhour>=18)
$lhour = 18;
if($lmin == 0)
$min = ((60-$fmin)/60)-1;
else
$min = ($lmin-$fmin)/60;
return $lhour-$fhour + $min;
}
function firstday($firstdate) //calculation of hours of first day
{
$stmin = $firstdate->format('i');
$sthour = $firstdate->format('H');
if($sthour<8) //time before morning 8
$lochour = 8;
else if($sthour>18)
$lochour = 0;
else if($sthour >=12 && $sthour<14)
$lochour = 4;
else
{
$lochour = 18-$sthour;
if($sthour<=14)
$lochour-=2;
if($stmin == 0)
$locmin =0;
else
$locmin = 1-( (60-$stmin)/60); //in hours
$lochour -= $locmin;
}
return $lochour;
}
function lastday($lastdate) //calculation of hours of last day
{
$stmin = $lastdate->format('i');
$sthour = $lastdate->format('H');
if($sthour>=18) //time after 18
$lochour = 8;
else if($sthour<8) //time before morning 8
$lochour = 0;
else if($sthour >=12 && $sthour<14)
$lochour = 4;
else
{
$lochour = $sthour - 8;
$locmin = $stmin/60; //in hours
if($sthour>14)
$lochour-=2;
$lochour += $locmin;
}
return $lochour;
}
?>
Check the bellow code, that will return the number of Working days
function number_of_working_days($from, $to) {
$workingDays = [1, 2, 3, 4, 5];// date format = (1 = Monday,2 = Tue, ...)
$holidayDays = ['*-12-25', '*-02-14', '2015-12-23']; // variable and fixed holidays
$from = new DateTime($from);
$to = new DateTime($to);
$to->modify('+1 day');
$interval = new DateInterval('P1D');
$days = new DatePeriod($from, $interval, $to);
$no_of_working_days = 0;
foreach ($days as $day) {
if (!in_array($day->format('N'), $workingDays)||in_array($day->format('Y-m-d'), $holidayDays)||in_array($day->format('*-m-d'), $holidayDays)) {continue;}
$working_days++;
}
return $no_of_working_days;
}
echo number_of_working_days('2015-12-01', '2015-09-10');
From that you can easily calculate the Number of Working Hours.
I have created for you this nice class you can use. It requires the nesbot/carbon library (http://carbon.nesbot.com/) and you use it like so:
$calc = new HoursCalculator(
Carbon::createFromFormat("Y-m-d H:i", "2015-10-7 09:00"),
Carbon::createFromFormat("Y-m-d H:i", "2015-10-14 18:00"),
[
"2015-10-13"
]
);
echo $calc->getHours();
Heres the class:
class HoursCalculator {
const LUNCH_HOURS = 2;
protected $start;
protected $end;
protected $holidays;
protected $hoursTotal;
public function __construct(Carbon $start, Carbon $end, $holidays = [])
{
$this->start = $start;
$this->end = $end;
$this->holidays = $holidays;
}
public function getHours()
{
$dayHours = $this->getHoursInADay();
return $this->calculateHours($dayHours);
}
protected function getHoursInADay()
{
$start = $this->start;
$end = Carbon::createFromFormat("Y-m-d H:i", $this->start->format("Y-m-d") . " " . $this->end->format("H:i"));
return $start->diffInHours($end) - self::LUNCH_HOURS;
}
protected function getStartDate()
{
return $this->start->format('Y-m-d');
}
protected function calculateHours($hoursInDay)
{
$start = $this->start->copy()->startOfDay();
$end = $this->end->copy()->endOfDay();
$days = 0;
while($start->lt($end)) {
if (!$this->isHoliday($start) && !$this->isWeekend($start)) {
$days++;
}
$start->addDay(1);
}
return $days * $hoursInDay;
}
protected function isHoliday(Carbon $date)
{
$date->startOfDay();
foreach($this->holidays as $holiday) {
$holiday = Carbon::createFromFormat("Y-m-d", $holiday)->startOfDay();
if ($date->eq($holiday)) {
return true;
}
}
return false;
}
protected function isWeekend(Carbon $date)
{
return $date->isWeekend();
}
}
Hope this helps!
I have an array of random dates (not coming from MySQL). I need to group them by the week as Week1, Week2, and so on upto Week5.
What I have is this:
$dates = array('2015-09-01','2015-09-05','2015-09-06','2015-09-15','2015-09-17');
What I need is a function to get the week number of the month by providing the date.
I know that I can get the weeknumber by doing
date('W',strtotime('2015-09-01'));
but this week number is the number between year (1-52) but I need the week number of the month only, e.g. in Sep 2015 there are 5 weeks:
Week1 = 1st to 5th
Week2 = 6th to 12th
Week3 = 13th to 19th
Week4 = 20th to 26th
Week5 = 27th to 30th
I should be able to get the week Week1 by just providing the date
e.g.
$weekNumber = getWeekNumber('2015-09-01') //output 1;
$weekNumber = getWeekNumber('2015-09-17') //output 3;
I think this relationship should be true and come in handy:
Week of the month = Week of the year - Week of the year of first day of month + 1
We also need to make sure that "overlapping" weeks from the previous year are handeled correctly - if January 1st is in week 52 or 53, it should be counted as week 0. In a similar fashion, if a day in December is in the first week of the next year, it should be counted as 53. (Previous versions of this answer failed to do this properly.)
<?php
function weekOfMonth($date) {
//Get the first day of the month.
$firstOfMonth = strtotime(date("Y-m-01", $date));
//Apply above formula.
return weekOfYear($date) - weekOfYear($firstOfMonth) + 1;
}
function weekOfYear($date) {
$weekOfYear = intval(date("W", $date));
if (date('n', $date) == "1" && $weekOfYear > 51) {
// It's the last week of the previos year.
return 0;
}
else if (date('n', $date) == "12" && $weekOfYear == 1) {
// It's the first week of the next year.
return 53;
}
else {
// It's a "normal" week.
return $weekOfYear;
}
}
// A few test cases.
echo weekOfMonth(strtotime("2020-04-12")) . " "; // 2
echo weekOfMonth(strtotime("2020-12-31")) . " "; // 5
echo weekOfMonth(strtotime("2020-01-02")) . " "; // 1
echo weekOfMonth(strtotime("2021-01-28")) . " "; // 5
echo weekOfMonth(strtotime("2018-12-31")) . " "; // 6
To get weeks that starts with sunday, simply replace date("W", ...) with strftime("%U", ...).
You can use the function below, fully commented:
/**
* Returns the number of week in a month for the specified date.
*
* #param string $date
* #return int
*/
function weekOfMonth($date) {
// estract date parts
list($y, $m, $d) = explode('-', date('Y-m-d', strtotime($date)));
// current week, min 1
$w = 1;
// for each day since the start of the month
for ($i = 1; $i < $d; ++$i) {
// if that day was a sunday and is not the first day of month
if ($i > 1 && date('w', strtotime("$y-$m-$i")) == 0) {
// increment current week
++$w;
}
}
// now return
return $w;
}
The corect way is
function weekOfMonth($date) {
$firstOfMonth = date("Y-m-01", strtotime($date));
return intval(date("W", strtotime($date))) - intval(date("W", strtotime($firstOfMonth)));
}
I have created this function on my own, which seems to work correctly. In case somebody else have a better way of doing this, please share.. Here is what I have done.
function weekOfMonth($qDate) {
$dt = strtotime($qDate);
$day = date('j',$dt);
$month = date('m',$dt);
$year = date('Y',$dt);
$totalDays = date('t',$dt);
$weekCnt = 1;
$retWeek = 0;
for($i=1;$i<=$totalDays;$i++) {
$curDay = date("N", mktime(0,0,0,$month,$i,$year));
if($curDay==7) {
if($i==$day) {
$retWeek = $weekCnt+1;
}
$weekCnt++;
} else {
if($i==$day) {
$retWeek = $weekCnt;
}
}
}
return $retWeek;
}
echo weekOfMonth('2015-09-08') // gives me 2;
function getWeekOfMonth(DateTime $date) {
$firstDayOfMonth = new DateTime($date->format('Y-m-1'));
return ceil(($firstDayOfMonth->format('N') + $date->format('j') - 1) / 7);
}
Goendg solution does not work for 2016-10-31.
function weekOfMonth($strDate) {
$dateArray = explode("-", $strDate);
$date = new DateTime();
$date->setDate($dateArray[0], $dateArray[1], $dateArray[2]);
return floor((date_format($date, 'j') - 1) / 7) + 1;
}
weekOfMonth ('2015-09-17') // returns 3
Given the time_t wday (0=Sunday through 6=Saturday) of the first of the month in firstWday, this returns the (Sunday-based) week number within the month:
weekOfMonth = floor((dayOfMonth + firstWday - 1)/7) + 1
Translated into PHP:
function weekOfMonth($dateString) {
list($year, $month, $mday) = explode("-", $dateString);
$firstWday = date("w",strtotime("$year-$month-1"));
return floor(($mday + $firstWday - 1)/7) + 1;
}
You can also use this simple formula for finding week of the month
$currentWeek = ceil((date("d",strtotime($today_date)) - date("w",strtotime($today_date)) - 1) / 7) + 1;
ALGORITHM :
Date = '2018-08-08' => Y-m-d
Find out day of the month eg. 08
Find out Numeric representation of the day of the week minus 1 (number of days in week) eg. (3-1)
Take difference and store in result
Subtract 1 from result
Divide it by 7 to result and ceil the value of result
Add 1 to result eg. ceil(( 08 - 3 ) - 1 ) / 7) + 1 = 2
My function. The main idea: we would count amount of weeks passed from the month's first date to current. And the current week number would be the next one. Works on rule: "Week starts from monday" (for sunday-based type we need to transform the increasing algorithm)
function GetWeekNumberOfMonth ($date){
echo $date -> format('d.m.Y');
//define current year, month and day in numeric
$_year = $date -> format('Y');
$_month = $date -> format('n');
$_day = $date -> format('j');
$_week = 0; //count of weeks passed
for ($i = 1; $i < $_day; $i++){
echo "\n\n-->";
$_newDate = mktime(0,0,1, $_month, $i, $_year);
echo "\n";
echo date("d.m.Y", $_newDate);
echo "-->";
echo date("N", $_newDate);
//on sunday increasing weeks passed count
if (date("N", $_newDate) == 7){
echo "New week";
$_week += 1;
}
}
return $_week + 1; // as we are counting only passed weeks the current one would be on one higher
}
$date = new DateTime("2019-04-08");
echo "\n\nResult: ". GetWeekNumberOfMonth($date);
$month = 6;
$year = 2021;
$week = date("W", strtotime($year . "-" . $month ."-01"));
$str='';
$str .= date("d-m-Y", strtotime($year . "-" . $month ."-01")) ."to";
$unix = strtotime($year."W".$week ."+1 week");
while(date("m", $unix) == $month){
$str .= date("d-m-Y", $unix-86400) . "|";
$str .= date("d-m-Y", $unix) ."to";
$unix = $unix + (86400*7);
}
$str .= date("d-m-Y", strtotime("last day of ".$year . "-" . $month));
$weeks_ar = explode('|',$str);
echo '<pre>'; print_r($weeks_ar);
working fine.
// Current week of the month starts with Sunday
$first_day_of_the_week = 'Sunday';
$start_of_the_week1 = strtotime("Last $first_day_of_the_week");
if (strtolower(date('l')) === strtolower($first_day_of_the_week)) {
$start_of_the_week1 = strtotime('today');
}
$end_of_the_week1 = $start_of_the_week1 + (60 * 60 * 24 * 7) - 1;
// Get the date format
print date('Y-m-d', $start_of_the_week1) . ' 00:00:00';
print date('Y-m-d', $end_of_the_week1) . ' 23:59:59';
// self::DAYS_IN_WEEK = 7;
function getWeeksNumberOfMonth(): int
{
$currentDate = new \DateTime();
$dayNumberInMonth = (int) $currentDate->format('j');
$dayNumberInWeek = (int) $currentDate->format('N');
$dayNumberToLastSunday = $dayNumberInMonth - $dayNumberInWeek;
$daysCountInFirstWeek = $dayNumberToLastSunday % self::DAYS_IN_WEEK;
$weeksCountToLastSunday = ($dayNumberToLastSunday - $daysCountInFirstWeek) / self::DAYS_IN_WEEK;
$weeks = [];
array_push($weeks, $daysCountInFirstWeek);
for ($i = 0; $i < $weeksCountToLastSunday; $i++) {
array_push($weeks, self::DAYS_IN_WEEK);
}
array_push($weeks, $dayNumberInWeek);
if (array_sum($weeks) !== $dayNumberInMonth) {
throw new Exception('Logic is not valid');
}
return count($weeks);
}
Short variant:
(int) (new \DateTime())->format('W') - (int) (new \DateTime('first day of this month'))->format('W') + 1;
There is a many solutions but here is one my solution that working well in the most cases.
function current_week ($date = NULL) {
if($date) {
if(is_numeric($date) && ctype_digit($date) && strtotime(date('Y-m-d H:i:s',$date)) === (int)$date)
$unix_timestamp = $date;
else
$unix_timestamp = strtotime($date);
} else $unix_timestamp = time();
return (ceil((date('d', $unix_timestamp) - date('w', $unix_timestamp) - 1) / 7) + 1);
}
It accept unix timestamp, normal date or return current week from the time() if you not pass any value.
Enjoy!
I know this an old post but i have an idea!
$datetime0 = date_create("1970-01-01");
$datetime1 = date_create(date("Y-m-d",mktime(0,0,0,$m,"01",$Y)));
$datetime2 = date_create(date("Y-m-d",mktime(0,0,0,$m,$d,$Y)));
$interval1 = date_diff($datetime0, $datetime1);
$daysdiff1= $interval1->format('%a');
$interval2 = date_diff($datetime0, $datetime2);
$daysdiff2= $interval2->format('%a');
$week1=round($daysdiff1/7);
$week2=round($daysdiff2/7);
$WeekOfMonth=$week2-$week1+1;
$date = new DateTime('first Monday of this month');
$thisMonth = $date->format('m');
$mondays_arr = [];
// Get all the Mondays in the current month and store in array
while ($date->format('m') === $thisMonth) {
//echo $date->format('Y-m-d'), "\n";
$mondays_arr[] = $date->format('d');
$date->modify('next Monday');
}
// Get the day of the week (1-7 from monday to sunday)
$day_of_week = date('N') - 1;
// Get the day of month (1 to 31)
$current_week_monday_date = date('j') - $day_of_week;
/*$day_of_week = date('N',mktime(0, 0, 0, 2, 11, 2020)) - 1;
$current_week_monday_date = date('j',mktime(0, 0, 0, 2, 11, 2020)) - $day_of_week;*/
$week_no = array_search($current_week_monday_date,$mondays_arr) + 1;
echo "Week No: ". $week_no;
How about this function making use of PHP's relative dates?
This function assumes the week ends on Saturday. But this can be changed easily.
function get_weekNumMonth($date) {
$CI = &get_instance();
$strtotimedate = strtotime($date);
$firstweekEnd = date('j', strtotime("FIRST SATURDAY OF " . date("F", $strtotimedate) . " " . date("Y", $strtotimedate)));
$cutoff = date('j', strtotime($date));
$weekcount = 1;
while ($cutoff > $firstweekEnd) {
$weekcount++;
$firstweekEnd += 7; // move to next week
}
return $weekcount;
}
This function returns the integer week number of the current month. Weeks always start on Monday and counting always starts with 1.
function weekOfmonth(DateTime $date)
{
$dayFirstMonday = date_create('first monday of '.$date->format('F Y'))->format('j');
return (int)(($date->format('j') - $dayFirstMonday +7)/7) + ($dayFirstMonday == 1 ? 0 : 1);
}
Example of use
echo weekOfmonth(new DateTime("2020-04-12")); //2
A test for all days from 1900-2038 with the accepted solution from #Anders as a reference:
//reference functions
//integer $date (Timestamp)
function weekOfMonthAnders($date) {
//Get the first day of the month.
$firstOfMonth = strtotime(date("Y-m-01", $date));
//Apply above formula.
return weekOfYear($date) - weekOfYear($firstOfMonth) + 1;
}
function weekOfYear($date) {
$weekOfYear = intval(date("W", $date));
if (date('n', $date) == "1" && $weekOfYear > 51) {
// It's the last week of the previos year.
return 0;
}
else if (date('n', $date) == "12" && $weekOfYear == 1) {
// It's the first week of the next year.
return 53;
}
else {
// It's a "normal" week.
return $weekOfYear;
}
}
//this function
function weekOfmonth(DateTime $date)
{
$dayFirstMonday = date_create('first monday of '.$date->format('F Y'))->format('j');
return (int)(($date->format('j') - $dayFirstMonday +7)/7) + ($dayFirstMonday == 1 ? 0 : 1);
}
$dt = date_create('1900-01-01');
$end = date_create('2038-01-02');
$countOk = 0;
$countError = 0;
for(;$dt < $end; $dt->modify('+1 Day')){
$ts = $dt->getTimestamp();
if(weekOfmonth($dt) === weekOfMonthAnders($ts)){
++$countOk;
}
else {
++$countError;
}
}
echo $countOk.' compare ok, '.$countError.' errors';
Result: 50405 compare ok, 0 errors
I took the visual approach (like how we do it in the real world). Instead of using formulas or what not, I solved it (or at least I think I did) by visualizing a literal calendar and then putting the dates in a multidimensional array. The first dimension corresponds to the week.
I hope someone can check if it stands your tests. Or help someone out with a different approach.
# date in this format 2021-08-03
# week_start is either Sunday or Monday
function getWeekOfMonth($date, $week_start = "Sunday"){
list($year, $month, $day) = explode("-", $date);
$dates = array();
$current_week = 1;
$new_week_signal = $week_start == "Sunday" ? 6 : 0;
for($i = 1; $i <= date("t", strtotime($date)); $i++){
$current_date = strtotime("{$year}-{$month}-".$i);
$dates[$current_week][] = $i;
if(date('w', $current_date) == $new_week_signal){
$current_week++;
}
}
foreach($dates as $week => $days){
if(in_array(intval($day), $days)){
return $week;
}
}
return false;
}
//It's easy, no need to use php function
//Let's say your date is 2017-07-02
$Date = explode("-","2017-07-02");
$DateNo = $Date[2];
$WeekNo = $DateNo / 7; // devide it with 7
if(is_float($WeekNo) == true)
{
$WeekNo = ceil($WeekNo); //So answer will be 1
}
//If value is not float then ,you got your answer directly
I'm pretty sure I'm overcomplicating this but atm I have no clue how to do it in another way.
I want to create an array which contains the number of a week in a month as a key and the days of this week as the value.
I'm using this function to get all days of a week:
public function getDaysOfWeek($year, $month, $day)
{
$firstMondayThisWeek = new DateTime($year . '/' . $month . '/' . $day, new DateTimeZone("Europe/Berlin"));
$firstMondayThisWeek->modify('tomorrow');
$firstMondayThisWeek->modify('last Monday');
$nextSevenDays = new DatePeriod(
$firstMondayThisWeek,
DateInterval::createFromDateString('+1 day'),
6
);
return $nextSevenDays;
}
And this function to build the array:
public function getWeekAndDays($year, $month)
{
$weeksInMonth = Carbon::createFromDate($year, $month)->endOfMonth()->weekOfMonth;
$weekBegin = Carbon::createFromDate($year, $month)->startOfMonth();
$weeks = [];
for($i=1; $i<=$weeksInMonth; $i++)
{
$collection = new \stdClass();
$collection->week = $i;
$collection->days = $this->getDaysOfWeek($year, $month, $weekBegin->day);
$weekBegin->addWeek(0);
$weeks[] = $collection;
}
return $weeks;
}
For all months except february I'm getting 5 weeks. For February I'm getting 4 weeks and so I'm not able to save the month-overlapping days.
Am I completely wrong here? What is a possible way to solve this task?
My friend I feel your pain, working with calendar data is annoying. Here's a function I wrote a while back that builds an array of weeks and days, separated by months. It's not the cleanest code but it works.
It will start from the date you pass in $today as "Y-m-d" (or default to the current date), then work back to the first week of the current month, start there, and then go forward for $scheduleMonths months building an array indexed first by month and then by week.
It's a bit hard to explain here, but it's self-contained so you can just copy/paste it into your code and then dd() the output to see what it looks like and if it works for you, and modify it from there. There's some formatting you may need to adjust as it was done that way for my specific use case, but the business logic should be sound.
You should be able to extract the number of weeks in a given month from the output (so if that's all you need you can prob simplify this once you confirm it's working).
public function getWeeks($today = null, $scheduleMonths = 6) {
$today = !is_null($today) ? Carbon::createFromFormat('Y-m-d',$today) : Carbon::now();
$startDate = Carbon::instance($today)->startOfMonth()->startOfWeek()->subDay(); // start on Sunday
$endDate = Carbon::instance($startDate)->addMonths($scheduleMonths)->endOfMonth();
$endDate->addDays(6 - $endDate->dayOfWeek);
$epoch = Carbon::createFromTimestamp(0);
$firstDay = $epoch->diffInDays($startDate);
$lastDay = $epoch->diffInDays($endDate);
$week=0;
$monthNum = $today->month;
$yearNum = $today->year;
$prevDay = null;
$theDay = $startDate;
$prevMonth = $monthNum;
$data = array();
while ($firstDay < $lastDay) {
if (($theDay->dayOfWeek == Carbon::SUNDAY) && (($theDay->month > $monthNum) || ($theDay->month == 1))) $monthNum = $theDay->month;
if ($prevMonth > $monthNum) $yearNum++;
$theMonth = Carbon::createFromFormat("Y-m-d",$yearNum."-".$monthNum."-01")->format('F Y');
if (!array_key_exists($theMonth,$data)) $data[$theMonth] = array();
if (!array_key_exists($week,$data[$theMonth])) $data[$theMonth][$week] = array(
'day_range' => '',
);
if ($theDay->dayOfWeek == Carbon::SUNDAY) $data[$theMonth][$week]['day_range'] = sprintf("%d-",$theDay->day);
if ($theDay->dayOfWeek == Carbon::SATURDAY) $data[$theMonth][$week]['day_range'] .= sprintf("%d",$theDay->day);
$firstDay++;
if ($theDay->dayOfWeek == Carbon::SATURDAY) $week++;
$theDay = $theDay->copy()->addDay();
$prevMonth = $monthNum;
}
$totalWeeks = $week;
return array(
'startDate' => $startDate,
'endDate' => $endDate,
'totalWeeks' => $totalWeeks,
'schedule' => $data,
);
}
I hope this helps you at least get started!
Something like this?
function weekOfMonth($date) {
$firstOfMonth = strtotime(date("Y-m-01", $date));
$lastWeekNumber = (int)date("W", $date);
$firstWeekNumber = (int)date("W", $firstOfMonth);
if (12 === (int)date("m", $date)) {
if (1 == $lastWeekNumber) {
$lastWeekNumber = (int)date("W", ($date - (7*24*60*60))) + 1;
}
} elseif (1 === (int)date("m", $date) and 1 < $firstWeekNumber) {
$firstWeekNumber = 0;
}
return $lastWeekNumber - $firstWeekNumber + 1;
}
function weeks($month, $year){
$lastday = date("t", mktime(0, 0, 0, $month, 1, $year));
return weekOfMonth(strtotime($year.'-'.$month.'-'.$lastday));
}
$result = [];
for ($year = 2017; $year < 2020; $year++){
for ($month = 1; $month < 13; $month++) {
$numOfWeeks = weeks($month, $year);
$result[$year][$month]['numOfWeeks'] = $numOfWeeks;
$daysInFirstWeek = 8 - date('N', strtotime($year.'-'.$month.'-01'));
$result[$year][$month]['daysPerWeek']['week_1'] = $daysInFirstWeek;
$startDay = date('d', strtotime('next Monday', strtotime($year.'-'.$month.'-01')));
for ($i = 1; $i < ($numOfWeeks - 1); $i++) {
$startDay += 7;
$result[$year][$month]['daysPerWeek']['week_'.($i+1)] = 7;
}
//last week
$result[$year][$month]['daysPerWeek']['week_'.($i+1)] = date('t', strtotime($year.'-'.$month.'-01')) - $startDay + 1;
}
}
echo json_encode($result)."\n";
I want to calculate the number of weekdays days in a give month and year. Weekdays means monday to friday. How do i do it ?
You don't need to count every day in the month. You already know the first 28 days contain 20 weekdays no matter what. All you have to do is determine the last few days. Change the start value to 29. Then add 20 weekdays to your return value.
function get_weekdays($m,$y) {
$lastday = date("t",mktime(0,0,0,$m,1,$y));
$weekdays=0;
for($d=29;$d<=$lastday;$d++) {
$wd = date("w",mktime(0,0,0,$m,$d,$y));
if($wd > 0 && $wd < 6) $weekdays++;
}
return $weekdays+20;
}
Some basic code:
$month = 12;
$weekdays = array();
$d = 1;
do {
$mk = mktime(0, 0, 0, $month, $d, date("Y"));
#$weekdays[date("w", $mk)]++;
$d++;
} while (date("m", $mk) == $month);
print_r($weekdays);
Remove the # if your PHP error warning doesn't show notices.
try this one
function getWeekdays($m, $y = NULL){
$arrDtext = array('Mon', 'Tue', 'Wed', 'Thu', 'Fri');
if(is_null($y) || (!is_null($y) && $y == ''))
$y = date('Y');
$d = 1;
$timestamp = mktime(0,0,0,$m,$d,$y);
$lastDate = date('t', $timestamp);
$workingDays = 0;
for($i=$d; $i<=$lastDate; $i++){
if(in_array(date('D', mktime(0,0,0,$m,$i,$y)), $arrDtext)){
$workingDays++;
}
}
return $workingDays;
}
This is the simplest code I could come up with.
You really would need to create an array or a database table to hold the holidays to get a true, "Working Days" count, but that wasn't what was asked, so here you go, hope this helps someone.
function get_weekdays($m,$y) {
$lastday = date("t",mktime(0,0,0,$m,1,$y));
$weekdays=0;
for($d=1;$d<=$lastday;$d++) {
$wd = date("w",mktime(0,0,0,$m,$d,$y));
if($wd > 0 && $wd < 6) $weekdays++;
}
return $weekdays;
}
Get the number of working days without holidays between two dates :
Use example:
echo number_of_working_days('2013-12-23', '2013-12-29');
Output:
3
Link to the function
DateObject method:
function getWorkingDays(DateTime $date) {
$month = clone $date;
$month->modify('last day of this month');
$workingDays = 0;
for ($i = $month->format('t'); $i > 28; --$i) {
if ($month->format('N') < 6) {
++$workingDays;
}
$month->modify('-1 day');
}
return 20 + $workingDays;
}
Calculate working days in a month from any date:
public function getworkd($mday)
{
$dn = new DateTime($mday);
$dfrom = $dn->format('Y-m-01');
$dtill = $dn->format('Y-m-t');
$df = new DateTime($dfrom);
$dt = new DateTime($dtill);
$wdays = 0;
while($df<=$dt)
{
$dof= $df->format('D') ;
if( $dof == 'Sun' || $dof == 'Sat' ) ; else $wdays++;
$df->add(new DateInterval('P1D'));
}
return $wdays;
}
Find the last day and the weekday for the given month
then do a simple while loop like :-
$dates = explode(',', date('t,N', strtotime('2013-11-01')));
$day = $dates[1];
$tot = $dates[0];
$cnt = 0;
while ($tot>1)
{
if ($day < 6)
{
$cnt++;
}
if ($day == 1)
{
$day = 7;
}
else
{
$day--;
}
$tot--;
}
$cnt = total of weekday (Monday to Friday) for a given month
I've come up with a non-loop function. Much better in terms of performance. It might seem messy but it just needs to ask PHP the first day's weekday and the month's number days: the rest are arithmetical operations based on logic.
function countWorkDays($year, $month)
{
$workingWeekdays = 5;
$firstDayTimestamp = mktime(0, 0, 0, $month, 1, $year);
$firstDayWeekDay = (int)date("N", $firstDayTimestamp); //1: monday, 7: saturday
$upToDay = (int)date("t", $firstDayTimestamp);
$firstMonday = 1 === $firstDayWeekDay ? 1 : 9 - $firstDayWeekDay;
$wholeWeeks = $firstMonday < $upToDay ? (int)floor(($upToDay - $firstMonday + 1) / 7) : 0;
$extraDays = ($upToDay - $firstMonday + 1) % 7;
$initialWorkdays = $firstMonday > 1 && $firstDayWeekDay <= $workingWeekdays ? $workingWeekdays - $firstDayWeekDay + 1 : 0;
$workdaysInWholeWeeks = $wholeWeeks * $workingWeekdays;
$extraWorkdays = $extraDays <= $workingWeekdays ? $extraDays : $workingWeekdays;
return $initialWorkdays + $workdaysInWholeWeeks + $extraWorkdays;
}
These functions work Without Loops.
The functions calculate the number of weekdays using:
day-number of first monday in month
number of days in month
// main functions
// weekdays in month of year
function calculateNumberOfWeekDaysAtDate($month, $year)
{
// I'm sorry, I don't know the right format for the $month and $year, I hope this is right.
// PLEASE CORRECT IF WRONG
$firstMondayInCurrentMonth = (int) date("j", strtotime("first monday of 01-$month-$year")); //get first monday in month for calculations
$numberOfDaysOfCurrentMonth = (int) date("t", strtotime("01-$month-$year")); // number of days in month
return calculateNumberOfWeekDaysFromFirstMondayAndNumberOfMonthDays($firstMondayInCurrentMonth, $numberOfDaysOfCurrentMonth);
}
// week days in current month
function calculateNumberOfWeekDaysInCurrentMonth()
{
$firstMondayInCurrentMonth = (int) date("j", strtotime("first monday of this month")); //get first monday in month for calculations
$numberOfDaysOfCurrentMonth = (int) date("t"); // number of days in this month
return calculateNumberOfWeekDaysFromFirstMondayAndNumberOfMonthDays($firstMondayInCurrentMonth, $numberOfDaysOfCurrentMonth);
}
// helper functions
function calculateNumberOfWeekDaysFromFirstMondayAndNumberOfMonthDays($firstMondayInCurrentMonth, $numberOfDaysOfCurrentMonth)
{
return $numberOfWeekDays = (($start = ($firstMondayInCurrentMonth - 3)) < 0 ? 0 : $start) + floor(($numberOfDaysOfCurrentMonth - ($firstMondayInCurrentMonth - 1)) / 7) * 5 + (($rest = (($numberOfDaysOfCurrentMonth - ($firstMondayInCurrentMonth - 1)) % 7)) <= 5 ? $rest : 5);
}
function workingDays($m,$y) {
$days = cal_days_in_month(CAL_GREGORIAN, $m, $y);
$workig_days = 0;
$days_rest = array(5,6); //friday,saturday
for ( $d=1 ; $d < $days+1 ; $d++ ) {
if ( !in_array(date("w",strtotime("{$d}-{$m}-{$y}")),$days_rest) ) {
$workig_days++;
}
}
return $workig_days;
}
I created a simple function that takes the $first_day_of_month (week day like Sunday/Monday etc). You can find out the first day of month like this:
date('N', strtotime(date("01-m-Y")));
And using the $month_last_date which can be procured like this:
date("t");
Here is the function:
function workingDaysInMonth(int $first_day_of_month, int $month_last_date) : array
{
$working_days = [];
$day = $first_day_of_month;
$working_day_count = 0;
for ($i = 1; $i <= $month_last_date; $i++) {
if ($day == 8) {
$day = 1;
}
if (!($day == 6 || $day == 7)) {
$working_day_count++;
$working_days[$i] = $working_day_count;
}
$day++;
}
return $working_days;
}
this will work
// oct. 2013
$month = 10;
// loop through month days
for ($i = 1; $i <= 31; $i++) {
// given month timestamp
$timestamp = mktime(0, 0, 0, $month, $i, 2012);
// to be sure we have not gone to the next month
if (date("n", $timestamp) == $month) {
// current day in the loop
$day = date("N", $timestamp);
// if this is between 1 to 5, weekdays, 1 = Monday, 5 = Friday
if ($day == 1 OR $day <= 5) {
// write it down now
$days[$day][] = date("j", $timestamp);
}
}
}
// to see if it works :)
print_r($days);