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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 |
|---|---|
| 492 | |
| 493 | /** |
| 494 | * Filter the language codes. |
| 495 | * |
| 496 | * @since MU |
| 497 | * |
| 498 | * @param array $lang_codes Key/value pair of language codes where key is the short version. |
| 499 | * @param string $code A two-letter designation of the language. |
| 500 | */ |
| 501 | $lang_codes = apply_filters( 'lang_codes', $lang_codes, $code ); |
| 502 | return strtr( $code, $lang_codes ); |
| 503 | } |
| 504 | |
| 505 | function sync_category_tag_slugs( $term, $taxonomy ) { |
| 506 | if ( global_terms_enabled() && ( $taxonomy == 'category' || $taxonomy == 'post_tag' ) ) { |
| 507 | if ( is_object( $term ) ) { |
| 508 | $term->slug = sanitize_title( $term->name ); |
| 509 | } else { |
| 510 | $term['slug'] = sanitize_title( $term['name'] ); |