Skip to content

DateTimeZone::listIdentifiers improvements #4882

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 3 commits into
base: master
Choose a base branch
from
Open

DateTimeZone::listIdentifiers improvements #4882

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
1e4fac8
DateTimeZone::listIdentifiers improvements
AllenJB Sep 24, 2025
cc79d5b
DateTimeZone::listIdentifiers improvements
AllenJB Sep 27, 2025
4f9d30d
DateTimeZone::listIdentifiers improvements (removed runnable annotati…
AllenJB Sep 28, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
38 changes: 25 additions & 13 deletions reference/datetime/datetimezone/listidentifiers.xml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,18 @@
<methodparam choice="opt"><type>int</type><parameter>timezoneGroup</parameter><initializer>DateTimeZone::ALL</initializer></methodparam>
<methodparam choice="opt"><type class="union"><type>string</type><type>null</type></type><parameter>countryCode</parameter><initializer>&null;</initializer></methodparam>
</methodsynopsis>
<para>
Return the list of <link xlink:href="&url.wiki.tzdb.names;">IANA Time Zone identifiers</link>.
</para>

<note>
<para>
It's possible to detect the client (browser) timezone with JavaScript using
<link xlink:href="&url.js.intl-datetimeformat;">Intl.DateTimeFormat</link> or
<link xlink:href="&url.js.temporal-zoneddatetime;">Temporal.ZonedDateTime</link>.
</para>
</note>

</refsect1>

<refsect1 role="parameters">
Expand Down Expand Up @@ -96,25 +108,28 @@
&reftitle.examples;
<para>
<example>
<title>A <methodname>DateTimeZone::listIdentifiers</methodname> example</title>
<title>List identifiers with location comments</title>
<programlisting role="php">
<![CDATA[
<?php
$timezone_identifiers = DateTimeZone::listIdentifiers();
for ($i=0; $i < 5; $i++) {
echo "$timezone_identifiers[$i]\n";
$identifiers = DateTimeZone::listIdentifiers(DateTimeZone::ALL);

foreach ($identifiers as $tzid) {
$tz = new DateTimeZone($tzid);
$comments = $tz->getLocation()['comments'];
echo $tzid . " (" . ($comments ?: 'Whole region') . ")\n";
}
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
America/Antigua (Whole region)
America/Araguaina (Tocantins)
America/Argentina/Buenos_Aires (Buenos Aires (BA, CF))
America/Argentina/Catamarca (Catamarca (CT), Chubut (CH))
America/Argentina/Cordoba (Argentina (most areas: CB, CC, CN, ER, FM, MN, SE, SF))
// (Output trimmed due to length)
]]>
</screen>
</example>
Expand All @@ -130,7 +145,6 @@ $timezone_identifiers = DateTimeZone::listIdentifiers( DateTimeZone::ASIA );
for ($i=0; $i < 5; $i++) {
echo "$timezone_identifiers[$i]\n";
}
?>
]]>
</programlisting>
&example.outputs.similar;
Expand All @@ -154,7 +168,6 @@ Asia/Aqtau
<?php
$timezone_identifiers = DateTimeZone::listIdentifiers( DateTimeZone::ASIA | DateTimeZone::PACIFIC );
echo join( ', ', $timezone_identifiers );
?>
]]>
</programlisting>
&example.outputs.similar;
Expand Down Expand Up @@ -201,7 +214,6 @@ $timezone_identifiers = DateTimeZone::listIdentifiers( DateTimeZone::PER_COUNTRY
foreach( $timezone_identifiers as $identifier ) {
echo "$identifier\n";
}
?>
]]>
</programlisting>
&example.outputs.similar;
Expand Down
Loading