PHP - Manual: Locale

2024-11-15

The Locale class

(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.0)

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.

类摘要

class Locale {

/* 方法 */

public static acceptFromHttp(string $header): string|false

public static canonicalize(string $locale): ?string

public static composeLocale(array $subtags): string|false

public static filterMatches(string $languageTag, string $locale, bool $canonicalize = false): ?bool

public static getAllVariants(string $locale): ?array

public static getDefault(): string

public static getDisplayLanguage(string $locale, ?string $displayLocale = null): string|false

public static getDisplayName(string $locale, ?string $displayLocale = null): string|false

public static getDisplayRegion(string $locale, ?string $displayLocale = null): string|false

public static getDisplayScript(string $locale, ?string $displayLocale = null): string|false

public static getDisplayVariant(string $locale, ?string $displayLocale = null): string|false

public static getKeywords(string $locale): array|false|null

public static getPrimaryLanguage(string $locale): ?string

public static getRegion(string $locale): ?string

public static getScript(string $locale): ?string

public static lookup(
    array $languageTag,
    string $locale,
    bool $canonicalize = false,
    ?string $defaultLocale = null
): ?string

public static parseLocale(string $locale): ?array

public static setDefault(string $locale): bool

}

预定义常量

Locale::DEFAULT_LOCALE (null): Used as locale parameter with the methods of the various locale affected classes, such as NumberFormatter. This constant would make the methods to use default locale.

These constants describe the choice of the locale for the getLocale method of different classes.

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::canonicalize — Canonicalize the locale string
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

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官方地址：https://www.php.net/manual/en/class.locale.php

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The Locale class

简介

类摘要

预定义常量

参见

目录

User Contributed Notes