Locale::lookup

locale_lookup

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

Locale::lookup -- locale_lookupSearches the language tag list for the best match to the language

Descrizione

Stile orientato agli oggetti

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

Stile procedurale

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

Searches the items in languageTag for the best match to the language range specified in locale according to RFC 4647's lookup algorithm.

Elenco dei parametri

languageTag

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.

defaultLocale

The locale to use if no match is found.

Valori restituiti

The closest matching language tag or default value.

Returns null when the length of locale exceeds INTL_MAX_LOCALE_LEN.

Log delle modifiche

Versione Descrizione
7.4.0 defaultLocale is nullable now.

Esempi

Example #1 locale_lookup() example

<?php
$arr 
= array(
    
'de-DEVA',
    
'de-DE-1996',
    
'de',
    
'de-De'
);
echo 
locale_lookup($arr'de-DE-1996-x-prv1-prv2'true'en_US');
?>

Example #2 OO example

<?php
$arr 
= array(
    
'de-DEVA',
    
'de-DE-1996',
    
'de',
    
'de-De'
);
echo 
Locale::lookup($arr'de-DE-1996-x-prv1-prv2'true'en_US');
?>

Il precedente esempio visualizzerĂ :

de_de_1996

Vedere anche:

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User Contributed Notes 2 notes

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2
vladimir at bashkirtsev dot com
8 years ago
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.
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0
Anonymous
7 years ago
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.
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