timezone_offset_get
To clarify kay's note below, when given an empty or invalid timezone string, this function does issue a warning, but it still returns boolean(FALSE) just like the documentation says.
Description
This function is an alias of: DateTimeZone::__construct()
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User Contributed Notes
timezone_open
brandon at theholbrooks dot org
31-Oct-2007 05:54
kay
28-Oct-2007 04:44
In case of an empty identifier the function returns a warning, not the boolean 'false'.
"Warning: timezone_open() [function.timezone-open]: Unknown or bad timezone () "