Locale::composeLocale

locale_compose

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

Locale::composeLocale -- locale_composeReturns a correctly ordered and delimited locale ID

Description

Object-oriented style

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

Procedural style

locale_compose(array $subtags): string|false

Returns a correctly ordered and delimited locale ID the keys identify the particular locale ID subtags, and the values are the associated subtag values.

Parameters

subtags

An array containing a list of key-value pairs, where the keys identify the particular locale ID subtags, and the values are the associated subtag values.

Note:

The 'variant' and 'private' subtags can take maximum 15 values whereas 'extlang' can take maximum 3 values. For instance, variants are allowed with the suffix ranging from 0-14. Hence the keys for the input array can be variant0, variant1, …,variant14. In the returned locale id, the subtag is ordered by suffix resulting in variant0 followed by variant1 followed by variant2 and so on.

Alternatively, the 'variant', 'private' and 'extlang' values can be specified as array under specific key (e.g. 'variant'). In this case no limits on the number of recognized subtags apply.

Return Values

The corresponding locale identifier, or false when subtags is empty.

Examples

Example #1 locale_compose() example

<?php
$arr 
= array(
    
'language'=>'en',
    
'script'  =>'Hans',
    
'region'  =>'CN',
    
'variant2'=>'rozaj',
    
'variant1'=>'nedis',
    
'private1'=>'prv1',
    
'private2'=>'prv2',
);
echo 
locale_compose($arr);
?>

Example #2 OO example

<?php
$arr 
= array(
    
'language'=>'en' ,
    
'script'  =>'Hans',
    
'region'  =>'CN',
    
'variant2'=>'rozaj',
    
'variant1'=>'nedis',
    
'private1'=>'prv1',
    
'private2'=>'prv2',
);
echo 
Locale::composeLocale($arr);
?>

The above example will output:

Locale: en_Hans_CN_nedis_rozaj_x_prv1_prv2

Example #3 Subtag limits

If subtags are given as separate keys with numeric suffix, unsupported keys are silently ignored (in this case 'extlang3'), and ordered in the result by numeric suffix. There are no limits, if subtags are given as array; the order is as given.

<?php
$arr 
= array(
    
'language' => 'en',
    
'script'   => 'Hans',
    
'region'   => 'CN',
    
'extlang3' => 'd',
    
'extlang2' => 'c',
    
'extlang1' => 'b',
    
'extlang0' => 'a',
);
echo 
locale_compose($arr), PHP_EOL;

$arr = array(
    
'language' => 'en',
    
'script'   => 'Hans',
    
'region'   => 'CN',
    
'extlang'  => ['a''b''c''d'],
);
echo 
locale_compose($arr), PHP_EOL;
?>

The above example will output:

en_a_b_c_Hans_CN
en_a_b_c_d_Hans_CN

See Also

  • locale_parse() - Returns a key-value array of locale ID subtag elements

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