apply_filters( 'load_textdomain_mofile', string $mofile, string $domain )

Filters MO file path for loading translations for a specific text domain.


$mofile string
Path to the MO file.
$domain string
Text domain. Unique identifier for retrieving translated strings.

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File: wp-includes/l10n.php. View all references

$mofile = apply_filters( 'load_textdomain_mofile', $mofile, $domain );

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Version Description
2.9.0 Introduced.

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User Contributed Notes

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    An example that allows to override the default translations of a plugin:

    add_filter( 'load_textdomain_mofile', 'my_custom_translation_file', 10, 2 );
     * Replace 'textdomain' with your plugin's textdomain. e.g. 'hello-dolly'. 
     * Define your filename, such as:
     * Define the location, for example: wp-content/languages/textdomain/
    function my_custom_translation_file( $mofile, $domain ) {
      if ( 'textdomain' === $domain ) {
        $mofile = WP_LANG_DIR . '/textdomain/yourtranslationfile-' . get_locale() . '.mo';
      return $mofile;

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