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(PHP 4, PHP 5)

setlocale — Set locale information

Sets locale information.

category

category is a named constant specifying the category of the functions affected by the locale setting: LC_ALL for all of the below LC_COLLATE for string comparison, see strcoll() LC_CTYPE for character classification and conversion, for example strtoupper() LC_MONETARY for localeconv() LC_NUMERIC for decimal separator (See also localeconv()) LC_TIME for date and time formatting with strftime() LC_MESSAGES for system responses (available if PHP was compiled with libintl)

If locale is NULL or the empty string "", the locale names will be set from the values of environment variables with the same names as the above categories, or from "LANG".

If locale is "0", the locale setting is not affected, only the current setting is returned.

If locale is an array or followed by additional parameters then each array element or parameter is tried to be set as new locale until success. This is useful if a locale is known under different names on different systems or for providing a fallback for a possibly not available locale.

(Optional string or array parameters to try as locale settings until success.)

Note:

On Windows, setlocale(LC_ALL, &#;&#;) sets the locale names from the system&#;s regional/language settings (accessible via Control Panel).

Returns the new current locale, or FALSE if the locale functionality is not implemented on your platform, the specified locale does not exist or the category name is invalid.

An invalid category name also causes a warning message. Category/locale names can be found in »RFC and »ISO . Different systems have different naming schemes for locales.

Note:

The return value of setlocale() depends on the system that PHP is running. It returns exactly what the system setlocale function returns.

版本 說明 5.3.0 This function now throws an E_DEPRECATED notice if a string is passed to the category parameter instead of one of the LC_* constants.

Example #1 setlocale() Examples

Example #2 setlocale() Examples for Windows

The locale information is maintained per process, not per thread. If you are running PHP on a multithreaded server API like IIS or Apache on Windows, you may experience sudden changes in locale settings while a script is running, though the script itself never called setlocale(). This happens due to other scripts running in different threads of the same process at the same time, changing the process-wide locale using setlocale().

Windows users will find useful information about locale strings at Microsoft&#;s MSDN website. Supported language strings can be found in the »language strings documentation and supported country/region strings in the »country/region strings documentation.

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