CODEWITHSUNDEEP
phpdatetimestrtotime
Yasiru Nilan
Yasiru Nilan

Reputation: 457

Getting the last day of a given month failing at months of 31 days

I have a problem like this. For a given date I need to get the last day of each of the previous months up to 5 months. As an example, if the input date is 2018-08-21, then the result I want is something like (2018-07-31,2018-06-30,2018-05-31,2018-04-30,2018-03-31)

I wrote a for loop to iterate for 5 times and used the following code to get the previous month. But at months of 31 days, it doesn't exactly give the previous month. It gives the last day as "2011-07-31" which is not true. Is there a workaround for this one??

$datetocheck = "2011-07-31";
$lastday = date('Y-m-t', strtotime('-1 month', strtotime($datetocheck)));
echo $lastday; //this gives 2011-07-31(Expected value is 2011-06-30)

Upvotes: 1

Views: 306

Answers (5)

Navid
Navid

Reputation: 910

Try to use DateTime Classe. You can run this in a loop like following

function lastDayOfMonth($datetocheck, $noOfMonth){

    $date = new \DateTime($datetocheck);
    $month = ((int) ($date)->format('m'))-$noOfMonth;
    $year = ($date)->format('Y');

    $lastMonth = new \DateTime("{$year}-{$month}");

    $lastday = $lastMonth->format('Y-m-t');

    echo $lastday . PHP_EOL;

}

for($i = 1; $i <= 5; $i++){
    lastDayOfMonth('2011-07-31', $i);
}

Upvotes: 0

Sonam Tripathi
Sonam Tripathi

Reputation: 183

requirement could be achieved by using loop with use of DateTime. If am right in understating please try

$startDate = new DateTime('2018-08-21');

$dateArr = array();

for($i=0; $i<=4; $i++) {
  $date = $startDate;

  $date->modify("last day of previous month");
  $lastDateOfMonth =  $date->format("Y-m-d");

  $dateArr[] = $lastDateOfMonth;
  $startDate = new DateTime($lastDateOfMonth);
}

$dateList = implode(",", $dateArr);

echo $dateList;

Upvotes: 0

Bharat Dangar
Bharat Dangar

Reputation: 527

For solve that problem you can try this

<?php
$datetocheck = "2011-07-31";
$tmp_date = date('Y-m-01',strtotime($datetocheck));
$lastday = date('Y-m-t', strtotime('-1 month', strtotime($tmp_date)));
echo $lastday; //this value is 2011-06-30
?>

Upvotes: 0

Bhargav Chudasama
Bhargav Chudasama

Reputation: 7171

try with this

echo date('2011-07-31', strtotime('last day of previous month'));
//2011-06-30

or

<?php
$date = '2011-07-31';
$date = new DateTime($date);
for($i=0;$i<5;$i++){
    $date->modify("last day of previous month");
    echo $date->format("Y-m-d")."<br>";
    $newDate= $date->format("Y-m-d");
    $date=new DateTime($newDate);
}
?>

Upvotes: 1

Yash Parekh
Yash Parekh

Reputation: 1529

Simple and easy to understand. Try this :- 

$initialDate = "2011-07-31";
for($i=1; $i<=5; $i++) {
    echo date('Y-m-d', strtotime('last day of -' . $i . ' month', strtotime($initialDate))) . "<br>";
}

Check this Fiddle link

Upvotes: 3

Related Questions