timezone_name_from_abbr -- Returns the timezone name from abbrevation
说明
string timezone_name_from_abbr ( string abbr [, int gmtOffset [, int isdst]] )
参数
abbr
Time zone abbreviation.
gmtOffset
Offset from GMT in seconds. Defaults to -1 which means that first found
time zone corresponding to abbr is returned.
Otherwise exact offset is searched and only if not found then the first
time zone with any offset is returned.
isdst
Daylight saving time indicator. If abbr doesn't
exist then the time zone is searched solely by
offset and isdst.
返回值
Returns time zone name on success or FALSE on failure.