Php unix timestamp with strtotime

Question

I start learn PHP and is very clear I make some error here, I try obtain Unix timestamp of specific hour and minutes of the day:

 <?php
 date_default_timezone_set('America/Argentina/Buenos_Aires');
 $data = new DateTime();
 $datafmt = $data->format('Y-m-d');
 echo strtotime($datafmt,'18:30:00');
 ?>

The code return 1554951600 and is equal to:

GMT: Thursday, April 11, 2019 3:00:00 AM
Your time zone: Thursday, April 11, 2019 12:00:00 AM GMT-03:00

This is wrong, timestamp should be:
1555018200 is equal to:

GMT: Thursday, April 11, 2019 9:30:00 PM
Your time zone: Thursday, April 11, 2019 6:30:00 PM GMT-03:00

What I doing wrong?

Fixed!

echo strtotime($datafmt. '18:30:00');

, instead . that is my error!

Why are you mixing DateTime with strtotime()? Why are you even using strtotime() at all? — John Conde
– John Conde, Commented Apr 12, 2019 at 1:46
Fixed. echo strtotime($dataformat,'18:30:00'); Should be echo strtotime($datafmt. '18:30:00'); That is my error. Now code return 1555018200 : ) John I learning php, probably I do a lot of incorrect things on the road :) I can showme better way of do what this code do, I really appreciate in order to learn. — MrBi
– MrBi, Commented Apr 12, 2019 at 1:51

Dharman · Accepted Answer · 2021-02-06 10:48:17Z

2

You do not need strtotime() at all. DateTime class is a replacement and is more powerful. Just pass the time to the constructor or set it with the method setTime()

<?php
date_default_timezone_set('America/Argentina/Buenos_Aires');
$data = new DateTime('18:30:00');
// Alternative ways to set the time of the DateTime object
// $data->setTime('18', '30', '00');
// $data->setTime(...explode(':', '18:30:00'));
$datafmt = $data->format('U'); // U means UNIX timestamp
echo $datafmt;

edited Feb 6, 2021 at 10:48

answered Apr 15, 2019 at 19:20

Dharman♦

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