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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 903 | /** |
| 904 | * Fires before the text domain is unloaded. |
| 905 | * |
| 906 | * @since 3.0.0 |
| 907 | * @since 6.1.0 Added the `$reloadable` parameter. |
| 908 | * |
| 909 | * @param string $domain Text domain. Unique identifier for retrieving translated strings. |
| 910 | * @param bool $reloadable Whether the text domain can be loaded just-in-time again. |
| 911 | */ |
| 912 | do_action( 'unload_textdomain', $domain, $reloadable ); |
| 913 | |
| 914 | // Since multiple locales are supported, reloadable text domains don't actually need to be unloaded. |
| 915 | if ( ! $reloadable ) { |
| 916 | WP_Translation_Controller::get_instance()->unload_textdomain( $domain ); |
| 917 | } |
| 918 | |
| 919 | if ( isset( $l10n[ $domain ] ) ) { |
| 920 | if ( $l10n[ $domain ] instanceof NOOP_Translations ) { |
| 921 | unset( $l10n[ $domain ] ); |