(no version information, might be only in CVS)
date_default_timezone_set --
Sets the default timezone used by all date/time functions in a script
Descripción
bool
date_default_timezone_set ( string timezone_identifier )
date_default_timezone_set() sets the default timezone
used by all date/time functions.
Nota:
Since PHP 5.1.0 (when the date/time functions were rewritten), every call
to a date/time function will generate a E_NOTICE if
the timezone isn't valid.