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Locale::addLikelySubtags -- locale_add_likely_subtags — Add likely subtags to a locale
面向对象风格
$locale
过程化风格
Expands a locale tag by adding likely subtags based on the ICU locale data. For example, en becomes en_Latn_US.
en
en_Latn_US
locale
The locale to expand.
Returns the locale with likely subtags added, or false on failure.
false
Throws a ValueError when the locale argument contains null bytes.
