date_default_timezone_get

Description

In order of preference, this function returns the default timezone by:

• Reading the timezone set using the date_default_timezone_set() function (if any)

• Reading the TZ environment variable (if non empty)

• Reading the value of the date.timezone ini option (if set)

• Querying the host operating system (if supported and allowed by the OS)

If none of the above succeed, date_default_timezone_get will return a default timezone of UTC.