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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 |
|---|---|
| 473 | * The language file should follow the same format as wp_mce_translation(), |
| 474 | * and should define a variable ($strings) that holds all translated strings. |
| 475 | * |
| 476 | * @since 2.5.0 |
| 477 | * @since 5.3.0 The `$editor_id` parameter was added. |
| 478 | * |
| 479 | * @param array $translations Translations for external TinyMCE plugins. |
| 480 | * @param string $editor_id Unique editor identifier, e.g. 'content'. |
| 481 | */ |
| 482 | $mce_external_languages = apply_filters( 'mce_external_languages', array(), $editor_id ); |
| 483 | |
| 484 | $loaded_langs = array(); |
| 485 | $strings = ''; |
| 486 | |
| 487 | if ( ! empty( $mce_external_languages ) ) { |
| 488 | foreach ( $mce_external_languages as $name => $path ) { |
| 489 | if ( @is_file( $path ) && @is_readable( $path ) ) { |
| 490 | include_once $path; |
| 491 | $ext_plugins .= $strings . "\n"; |