function date_timezone_is_valid in Date 7.2
Same name and namespace in other branches
- 5.2 date_api.module \date_timezone_is_valid()
- 6.2 date_api.module \date_timezone_is_valid()
- 7.3 date_api/date_api.module \date_timezone_is_valid()
- 7 date_api/date_api.module \date_timezone_is_valid()
Determines if a timezone string is valid.
Parameters
string $timezone: A potentially invalid timezone string.
Return value
bool TRUE if the timezone is valid, FALSE otherwise.
1 call to date_timezone_is_valid()
- date_ical_parse_date in date_api/
date_api_ical.inc - Parses a ical date element.
File
- date_api/
date_api.module, line 1954 - This module will make the date API available to other modules.
Code
function date_timezone_is_valid($timezone) {
static $timezone_names;
if (empty($timezone_names)) {
$timezone_names = array_keys(date_timezone_names(TRUE));
}
return in_array($timezone, $timezone_names);
}