Locale::lookup()

locale_lookup

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

Searches the language tag list for the best match to the language

说明

面向对象风格
publicstaticLocale::lookup(array $langtag,string $locale[,bool $canonicalize=FALSE[,string $default]]): string过程化风格
locale_lookup(array $langtag,string $locale[,bool $canonicalize=FALSE[,string $default]]): string

Searches the items in$langtagfor the best match to the language range specified in$localeaccording to RFC 4647's lookup algorithm.

参数

$langtag

An array containing a list of language tags to compare to$locale. Maximum 100 items allowed.

$locale

The locale to use as the language range when matching.

$canonicalize

If true, the arguments will be converted to canonical form before matching.

$default

The locale to use if no match is found.

返回值

The closest matching language tag or default value.

范例

locale_lookup()example

OO example

以上例程会输出：

de_de_1996

参见

• locale_filter_matches() Checks if a language tag filter matches with locale

It worth to note that if $langtag array is empty this function returns empty string and not $default . Use array(false) if your $langtag array is empty in order to get default locale.

Note that this method does not understand "similar" languages, so the following:
  Locale::lookup(["en-US"], "en-GB", false);
Or:
  Locale::lookup(["es-ES"], "es-CO", false);
Does not work as you would expect (empty result). To get a match in those cases you will have to use two letter language codes instead:
  Locale::lookup(["en"], "en-GB", false);
Or:
  Locale::lookup(["es"], "es-CO", false);
These do return 'en' and 'es' respectively.