Use pattern letter "j" in skeleton to get a localized time string: https://unicode-org.github.io/icu/userguide/format_parse/datetime/index#datetimepatterngenerator
"j" gets mapped to one of "H", "h", "k" or "K".
(PHP 8 >= 8.1.0)
IntlDatePatternGenerator::getBestPattern — Determines the most suitable date/time format
Determines which date/time format is most suitable for a particular locale.
skeletonThe skeleton.
Returns a format, accepted by DateTimeInterface::format() on success, 或者在失败时返回 false.
示例 #1 IntlDatePatternGenerator::getBestPattern() example
<?php
$skeleton = 'YYYYMMdd';
$today = \DateTimeImmutable::createFromFormat('Y-m-d', '2021-04-24');
$patternGenerator = new \IntlDatePatternGenerator('de_DE');
$pattern = $patternGenerator->getBestPattern($skeleton);
echo 'de: ', \IntlDateFormatter::formatObject($today, $pattern, 'de_DE'), "\n";
$patternGenerator = new \IntlDatePatternGenerator('en_US');
$pattern = $patternGenerator->getBestPattern($skeleton);
echo 'en: ', \IntlDateFormatter::formatObject($today, $pattern, 'en_US');
?>以上示例会输出：
de: 24.04.2021 en: 04/24/2021
Use pattern letter "j" in skeleton to get a localized time string: https://unicode-org.github.io/icu/userguide/format_parse/datetime/index#datetimepatterngenerator
"j" gets mapped to one of "H", "h", "k" or "K".