timezone_name_from_abbr function returns the timezone name from abbreviation. It returns timezone name on success or False on failure.
Syntax of timezone_name_from_abbr() Function PHP
timezone_name_from_abbr (abbr, gmtOffset = -1, isdst = -1)
Parameters on timezone_name_from_abbr() Function PHP
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 only by offset and isdst .
echo timezone_name_from_abbr("I") . "\n";
echo timezone_name_from_abbr("", 19800, 0) . "\n";
The above example will output something similar to:
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