Dynamically change end date format based on current day - php

Question

I am putting together a membership site that uses a pro rata system for memberships fees.
EG
$75.00 from 01 Apr YY - 31 Mar YY but if you join at say around Sep YY, then you only pay the pro rata of $38.00
My current coding is working fine - no probs.
But was wondering is there a way to to dynamically change the end date ($your_date) below so I don't have to manually edit it every 12 months?
So for instance, if today's date was 01 Feb 2017, then $your_date below is correct.
However, if todays date was 14 May 2017, then $your_date below of course is incorrect.
Membership year runs from 01 Apr this/last year - 31 Mar this/next year, so it would be
if Today's date <= 31 Mar this/next year && >= 01 Apr this/last year then do something..
<?php
$now = time(); // or your date as well
$your_date = strtotime("2017-03-31");
$datediff = $your_date - $now;
$SOS = floor($datediff/(60*60*24)*0.205);
$ORD = floor($datediff/(60*60*24)*0.115);
$GEN = floor($datediff/(60*60*24)*0.03);
?>
Or have I got a fixation with the code I'm using and there is something a lot simpler?

Answer 1

The PHP below is deliberately verbose in order that each line explains itself:
$Current_Year = date('Y');
$Current_Month = date('n');
$Current_Day = date('j');
$Next_Year = ($Current_Year + 1);
if ($Current_Month < 4) {
$Expiration_Year = $Current_Year;
}
if ($Current_Month > 3) {
$Expiration_Year = $Next_Year;
}
# Checks if date is March 31st
if (($Current_Month == 3) && ($Current_Day == 31)) {
$Expiration_Year = $Next_Year;
}
$Expiration_Date = $Expiration_Year.'-03-31';

Answer 2

It's a little complicated, but I think you want:
If the current date is April or later, then March 31 next year, otherwise it's March 31 this year.
Does that about sum it up? Of course, if they're applying on the 31st of March, that'd be a $0.00 fee...
So I think the code should be:
$your_year = ( date('m')>'3' ? ((int)date('Y')+1) : date('Y') )
$your_date = strtotime( $your_year . "-03-31" )