how to get the previous 3 months in php - php

Question

how to get the previous 3 months in php ex(If i say DEC.. It should display the previous 3 months i.e., OCT NOV DEC)

Answer 1

You can use the strtotime function like this:
echo date('M', strtotime('-3 month'));
So you specify previous dates with minus sign.
echo date('M', strtotime('0 month'));
echo date('M', strtotime('-1 month'));
echo date('M', strtotime('-2 month'));
echo date('M', strtotime('-3 month'));
Results:
Dec
Nov
Oct
Sep
You can do the same if you are using a loop like this:
for ($i = -3; $i <= 0; $i++){
echo date('M', strtotime("$i month"));
}
Results:
Sep
Oct
Nov
Dec
Check out the documentation too see many other friendly date and time keywords strtotime supports:
http://php.net/manual/en/function.strtotime.php

Answer 2

Voted answer is almost correct.
Correct solution is:
for ($i = -3; $i <= 0; $i++){
echo date('M', strtotime("$i month", strtotime(date("Y-m-15"))));
}
Explain: strtotime default implementation is:
date ( string $format [, int $timestamp = time() ] ) : string
As you can see there is timestamp with default value of: time().
Last say today is 31th March.
Because there is no 31th Feb
echo date('M', strtotime("-1 month"));
will return March
On the other hand:
echo date('M', strtotime("+1 month"));
will return May (April will be skipped).
Because of that issue we have to setup timestamp value which is a safe date.
Every date between 1-28 is safe because every month have got that date. In my example I had choose 15th day of month.

Answer 3

$month = date('M');
$year = date('Y');
$no_of_mnths = date('n',strtotime("-2 months"));
$remaining_months = (12 - $no_of_mnths)."\r\n";
$tot = $remaining_months+1;
for($j=0;$j<$tot;$j++){
echo date('M',strtotime(''.$no_of_mnths.' months'))
$no_of_mnths++;
}

Answer 4

This may help you`
<?php
$date = explode("-", "2016-08-31");
if($date[2]== "01"){$days = "-0 days";}else{$days = "-1 days";}
$time = strtotime($days, mktime(0, 0, 0, $date[1], $date[2], $date[0]));
$MTD = date('Y-m-01', strtotime('0 month'));
$M1 = date('Y-m-01', strtotime('-1 month'));
$M2 = date('Y-m-01', strtotime('-2 month'));
$M3 = date('Y-m-01', strtotime('-3 month'));
$rng = array();
$rng[$MTD] = strftime("%B, %Y", strtotime(" ", $time));
$rng[$M1] = strftime("%B, %Y", strtotime("first day of previous month", $time));
$rng[$M2] = strftime("%B, %Y", strtotime("-2 months", $time));
$rng[$M3] = strftime("%B, %Y", strtotime("-3 months", $time));
?>
Here $MTD ,$M1,$M2,$M3 will give date in the form of "dd-mm-yyyy" and $rng[$MTD], $rng[$M1],$rng[$M2],$rng[$M3] give date in the form of"Name of Month,year" => (i.e August,2016)