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List:       php-general
Subject:    Re: echo strftime('%s'); returns -1, should be epoch time
From:       "Christoph M. Becker" <cmbecker69 () gmx ! de>
Date:       2020-06-09 7:49:03
Message-ID: d947d327-0132-83dc-5069-e458eb867776 () gmx ! de
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On 08.06.2020 at 19:55, Pete Cooper wrote:

> Hello.
> I'm compiling PHP 7.4 and 7.3 from source on a self-managed Ubuntu 20.04 server. I \
> am encountering an issue with obtaining the epoch time. 
> This is the command I am using:
> 
> php -r "echo strftime('%s');"
> 
> I expect the above to return epoch time (i.e. 1591628404 or thereabouts), but \
> instead it returns -1. 
> In my testing, running the above command on a vanilla Ubuntu LTS release with \
> maintained `apt` packages returns the expected result. 
> I am scratching my head about the configuration/compile differences between the \
> working and non-working instances. It's not clear to me whether the issue is with \
> PHP compile/config setup, or operating system locale differences, or something else \
> entirely. I am grateful for any advice or feedback.

PHP's strftime() is implemented on top of strftime(3) which is rather
system specific; the %s modifier isn't even required by POSIX[1].

I would just use time() instead.

[1]
<https://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html>

--
Christoph M. Becker


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