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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 |
|---|---|
| 2488 | */ |
| 2489 | function the_search_query() { |
| 2490 | /** |
| 2491 | * Filter the contents of the search query variable for display. |
| 2492 | * |
| 2493 | * @since 2.3.0 |
| 2494 | * |
| 2495 | * @param mixed $search Contents of the search query variable. |
| 2496 | */ |
| 2497 | echo esc_attr( apply_filters( 'the_search_query', get_search_query( false ) ) ); |
| 2498 | } |
| 2499 | |
| 2500 | /** |
| 2501 | * Display the language attributes for the html tag. |
| 2502 | * |
| 2503 | * Builds up a set of html attributes containing the text direction and language |
| 2504 | * information for the page. |
| 2505 | * |
| 2506 | * @since 2.1.0 |