Add specific hours in a specific time in php [duplicate] - php

Question

This question already has answers here:
Add time in PHP
(4 answers)
Closed 5 years ago.
Following is code that helps in adding specific hours in present time
date('H:i', strtotime('+1 hours'));
How should i add hours if the time and hours are dynamic. E.g I wish to add 2 hours to time 08:00, but these both things are saved in variables
$hours = "2";
$day_time = "08:00";
I tried the following but didn't work
$new_time = date($day_time, strtotime('+$hours hours'));
can anyone please tell how it can be done

Answer 1

try this
echo date("H:i", strtotime("+{$hours}hour ".$day_time));

Answer 2

Try this
$h = 2 ;
$time="08:00";
$time = date('H:i', strtotime($time.'+'.$h.' hour'));
echo $time;

Answer 3

Try below code,
<?php
$hours = "2";
$day_time = "08:00";
$new_time = date('H:i',strtotime($day_time.'+ '.$hours.' hour'));
echo $new_time;
?>
Output : 10:00

Answer 4

Using datetime would be better to avoid
"A non well formed numeric value encountered"
$date = new DateTime($day_time);
$date->modify("+".$hours." hours");
echo $date->format("H:i");

Answer 5

Try like this,
$hours = 2;
$day_time = "08:00";
$new_time = date('H:i',strtotime($day_time."+$hours hours"));

Answer 6

That's because you are using a variable inside single quotes. There are some ways to fix this:
//awful and you should avoid it
//(hard to read, unsafe use of direct variables inside strings):
$new_time = date($day_time, strtotime("+$hours hours"));
or
//still awful and you should avoid it too:
$new_time = date($day_time, strtotime('+{$hours} hours'));
or
//a little better, but still unsafe:
$new_time = date($day_time, strtotime('+' . $hours . ' hours'));
or
//better, safe because it only adds numeric values to the hours:
$new_time = date($day_time, strtotime(sprintf('+%d hours', $hours)));
or
//the ideal solution, safer to use and more professional:
$dateObj = new DateTime();
$dateObj->modify(sprintf('+%d hours', $hours));
$new_time = $dateObj->format("H:i");
That's the beauty and the curse of PHP, you can always do things in more than one way.