如何在PHP中获得最近3个月或几周，几年或几天？

Question

I have this working code that gets the last 30 days.

<?php
    echo date('Y-m-d').' - '.date('Y-m-d', strtotime('today - 30 days'));
?>

I wanted to also to make it more dynamic such as:

`date('Y-m-d', strtotime('from today to 3 months'));`
`date('Y-m-d', strtotime('from today to 7 weeks'));` 
`date('Y-m-d', strtotime('from today to 2 years'));` 

Answer 1

echo date('Y-m-d', strtotime('- 3 months')).'<br>';
echo date('Y-m-d', strtotime('- 7 weeks')).'<br>';
echo date('Y-m-d', strtotime('- 2 years'));

It's not necessary to specify today inside the strtotime() function.

To make it dynamic use variables, for example:

$amount = 5;
$field = 'months'; // or 'days' or 'years'...
echo date('Y-m-d', strtotime("- $amount $field")).'<br>';