php date subtract code example

Example 1: php remove 1 day from date

print('Next Date ' . date('Y-m-d', strtotime('-1 day', strtotime($date_raw))));

Example 2: substract 2 dates php

$datetime1 = strtotime('May 3, 2012 10:38:22 GMT');
$datetime2 = strtotime('06 Apr 2012 07:22:21 GMT');

$secs = $datetime2 - $datetime1;// == <seconds between the two times>
$days = $secs / 86400;