apply_filters( 'get_available_languages', string[] $languages, string $dir )
Filters the list of available language codes.
Parameters
- $languages
 -  
(string[]) An array of available language codes.
 - $dir
 -  
(string) The directory where the language files were found.
 
Source
File: wp-includes/l10n.php
Changelog
| Version | Description | 
|---|---|
| 4.7.0 | Introduced. | 
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Licensed under the GNU GPLv2+ License.
    https://developer.wordpress.org/reference/hooks/get_available_languages