How to get different date with the same time

Question

It's maybe a really simple question but I found a little hard since I am still novice on PHP.

Presumably I have:

$time1 = strtotime("today 15:00:00-05:00");

This is just example, $time1 is dynamic at runtime and can be any value, I would like to create new $time2 which has the value:

$time2 = strtotime("this thursday 15:00:00-05:00");

Please note in here $time1 and $time2 have the same 15:00:00-05:00 and only different the day. So, to sump up, I have two inputs:

1. $time1 which is dynamic at runtime.
2. the string this thursday.

How to create the $time2 with the value like above.

Answer 1

Find the difference between "today" and "today 15:00:00-05:00" and add it to "this thursday"

$sometime = "today 15:00:00-05:00";
$time1 = strtotime($sometime);
// now find only the hour part
$time = mktime(0,0,0, date('n', $time1), date('j', $time1), date('Y', $time1));
$time_difference = $time1 - $time; 
$time2 = strtotime("this thursday") + $time_difference;

Or even simpler:

$sometime = "today 15:00:00-05:00";
$time1 = strtotime($sometime);
// now find only the hour part
$hour_string = date('h:i:s', $time1); 
$time2 = strtotime("this thursday $hour_string");

Answer 2

Wonder why you don't use DateTime object of PHP right from the start, but ok:

$dateTime = new DateTime($time1);
$dateTime->modify('+1 day');
$time2 = $dateTime->getTimestamp();

Where you can change the 1 to any amount of days.

Answer 3

As I understand what you want is to concat the two string "this thursday" and "15:00:00-05:00":

$str1 = "this thursday";
$str2 = "15:00:00-05:00";

$time = strtotime($str1." ".$str2);

Answer 4

You may try this. And you need to specify more if it is not fulfilling the requirement.

 $time1 = date("Y-m-d H:i:s");
 $time2 = 'this thrusday ';
 $time2 .= $time1;
 $time2 = strtotime($time2);