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datetime: new format "p", same as "P" but returning "Z" for UTC #5896

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gharlan wants to merge 1 commit into from
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datetime: new format "p", same as "P" but returning "Z" for UTC #5896

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@gharlan gharlan commented Jul 26, 2020 •
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ISO 8601 differentiates between local time (without time zone), UTC with letter "Z" and time offsets from UTC like "+02:00".
https://en.wikipedia.org/wiki/ISO_8601#Time_zone_designators

When formatting datetimes, it is sometimes desired to get the "Z" for UTC times and otherwise the offset.
But at the moment there are only the formatting chars "O" (for "+0200" etc.) and "P" (for "+02:00" etc.).

I suggest to add another formatting char "Q" lower case "p" which behaves the same as "P" but returns "Z" for UTC datetimes.

$datetime = new DateTime('2020-07-26 20:00:00', new DateTimeZone('UTC'));
$datetime->format('Y-m-d\TH:i:sP'); // '2020-07-26T20:00:00+00:00'
$datetime->format('Y-m-d\TH:i:sp'); // '2020-07-26T20:00:00Z'

$datetime = new DateTime('2020-07-26 20:00:00', new DateTimeZone('Europe/London'));
$datetime->format('Y-m-d\TH:i:sP'); // '2020-07-26T20:00:00+00:00'
$datetime->format('Y-m-d\TH:i:sp'); // '2020-07-26T20:00:00+00:00'

$datetime = new DateTime('2020-07-26 20:00:00', new DateTimeZone('Europe/Berlin'));
$datetime->format('Y-m-d\TH:i:sP'); // '2020-07-26T20:00:00+02:00'
$datetime->format('Y-m-d\TH:i:sp'); // '2020-07-26T20:00:00+02:00'

I'm not sure if it is useful enough to deserve a new formatting char. So don't worry about rejecting this proposal!

@nikic nikic requested a review from derickr July 27, 2020 07:52
derickr
derickr requested changes Jul 27, 2020
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@gharlan gharlan force-pushed the datetime-format-utc branch from ea9ad8e to 60e381b Compare July 27, 2020 11:42
@gharlan gharlan changed the title datetime: new format "Q", same as "P" but returning "Z" for UTC datetime: new format "p", same as "P" but returning "Z" for UTC Jul 27, 2020
derickr
derickr reviewed Jul 27, 2020
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LGTM!

Can you make a ticket at bugs.php.net, so that we can add a line to the NEWS file too? Feel free to include that in this PR. The formatting of the NEWS file is finicky :-)

@gharlan gharlan force-pushed the datetime-format-utc branch from 60e381b to e9551a5 Compare July 27, 2020 17:02
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gharlan commented Jul 27, 2020

Can you make a ticket at bugs.php.net, so that we can add a line to the NEWS file too? Feel free to include that in this PR. The formatting of the NEWS file is finicky :-)

Done. I hope everything is correct.

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cmb69 commented Jul 28, 2020

[…], so that we can add a line to the NEWS file too? Feel free to include that in this PR.

I'd suggest not to add NEWS entries to PRs, because that can result in merge conflicts pretty quickly.

Anyhow, the merger should also add a note to UPGRADING, so that this feature addition will not be forgotten for the migration guide in the PHP manual. Thanks.

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cmb69 commented Aug 3, 2020

Applied as a6e3ce4.

@cmb69 cmb69 closed this Aug 3, 2020
@nikic nikic added this to the PHP 8.0 milestone Aug 3, 2020
@gharlan gharlan deleted the datetime-format-utc branch August 3, 2020 09:06
@gharlan gharlan mentioned this pull request Aug 9, 2020
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