(PHP 8 >= 8.4.0)
IntlTimeZone::getIanaID -- intltz_get_iana_id — Translate a timezone identifier to its IANA equivalent
オブジェクト指向型 (method):
手続き型:
Translates a timezone identifier to its IANA equivalent. For example,
"GMT" returns "Etc/GMT", and
"US/Eastern" returns "America/New_York".
注意: This function requires ICU version >= 74.
timezoneId