The Locale class

简介

A "Locale" is an identifier used to get language, culture, or regionally-specific behavior from an API. PHP locales are organized and identified the same way that the CLDR locales used by ICU (and many vendors of Unix-like operating systems, the Mac, Java, and so forth) use. Locales are identified using RFC 4646 language tags (which use hyphen, not underscore) in addition to the more traditional underscore-using identifiers. Unless otherwise noted the functions in this class are tolerant of both formats.

Examples of identifiers include:

en-US (English, United States)
zh-Hant-TW (Chinese, Traditional Script, Taiwan)
fr-CA, fr-FR (French for Canada and France respectively)

The Locale class (and related procedural functions) are used to interact with locale identifiers--to verify that an ID is well-formed, valid, etc. The extensions used by CLDR in UAX #35 (and inherited by ICU) are valid and used wherever they would be in ICU normally.

Locales cannot be instantiated as objects. All of the functions/methods provided are static.

The null or empty string obtains the "root" locale. The "root" locale is equivalent to "en_US_POSIX" in CLDR. Language tags (and thus locale identifiers) are case insensitive. There exists a canonicalization function to make case match the specification.

Class synopsis

Locale

Locale {

/* Methods */

static string acceptFromHttp ( string $header )

static string composeLocale ( array $subtags )

static bool filterMatches ( string $langtag , string $locale )

static array getAllVariants ( string $locale )

static string getDefault ( void )

static string getDisplayLanguage ( string $locale [, string $in_locale ] )

static string getDisplayName ( string $locale [, string $in_locale ] )

static string getDisplayRegion ( string $locale [, string $in_locale ] )

static string getDisplayScript ( string $locale [, string $in_locale ] )

static string getDisplayVariant ( string $locale [, string $in_locale ] )

static array getKeywords ( string $locale )

static string getPrimaryLanguage ( string $locale )

static string getRegion ( string $locale )

static string getScript ( string $locale )

static string lookup ( array $langtag , string $locale , string $default )

static array parseLocale ( string $locale )

static bool setDefault ( string $locale )

}

预定义常量

These constants define how the Locale

Locale::DEFAULT_LOCALE (string): Used with the getLocale methods of the various locale affected classes, such as numfmt.
Locale::ACTUAL_LOCALE (string): This is locale the data actually comes from.
Locale::VALID_LOCALE (string): This is the most specific locale supported by ICU.

These constants define how the Locales are parsed or composed. They should be used as keys in the argument array to locale_compose() and are returned from locale_parse() as keys of the returned associative array.

Locale::LANG_TAG (string): Language subtag
Locale::EXTLANG_TAG (string): Extended language subtag
Locale::SCRIPT_TAG (string): Script subtag
Locale::REGION_TAG (string): Region subtag
Locale::VARIANT_TAG (string): Variant subtag
Locale::GRANDFATHERED_LANG_TAG (string): Grandfathered Language subtag
Locale::PRIVATE_TAG (string): Private subtag

参见

Locale::acceptFromHttp — Tries to find out best available locale based on HTTP "Accept-Language" header
Locale::composeLocale — Returns a correctly ordered and delimited locale ID
Locale::filterMatches — Checks if a language tag filter matches with locale
Locale::getAllVariants — Gets the variants for the input locale
Locale::getDefault — Gets the default locale value from the INTL global 'default_locale'
Locale::getDisplayLanguage — Returns an appropriately localized display name for language of the inputlocale
Locale::getDisplayName — Returns an appropriately localized display name for the input locale
Locale::getDisplayRegion — Returns an appropriately localized display name for region of the input locale
Locale::getDisplayScript — Returns an appropriately localized display name for script of the input locale
Locale::getDisplayVariant — Returns an appropriately localized display name for variants of the input locale
Locale::getKeywords — Gets the keywords for the input locale
Locale::getPrimaryLanguage — Gets the primary language for the input locale
Locale::getRegion — Gets the region for the input locale
Locale::getScript — Gets the script for the input locale
Locale::lookup — Searches the language tag list for the best match to the language
Locale::parseLocale — Returns a key-value array of locale ID subtag elements.
Locale::setDefault — sets the default runtime locale

The Locale class

简介

Class synopsis

预定义常量

参见

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