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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 |
|---|---|
| 2789 | */ |
| 2790 | function the_search_query() { |
| 2791 | /** |
| 2792 | * Filter the contents of the search query variable for display. |
| 2793 | * |
| 2794 | * @since 2.3.0 |
| 2795 | * |
| 2796 | * @param mixed $search Contents of the search query variable. |
| 2797 | */ |
| 2798 | echo esc_attr( apply_filters( 'the_search_query', get_search_query( false ) ) ); |
| 2799 | } |
| 2800 | |
| 2801 | /** |
| 2802 | * Gets the language attributes for the html tag. |
| 2803 | * |
| 2804 | * Builds up a set of html attributes containing the text direction and language |
| 2805 | * information for the page. |
| 2806 | * |
| 2807 | * @since 4.3.0 |