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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 |
|---|---|
| 4028 | */ |
| 4029 | function the_search_query() { |
| 4030 | /** |
| 4031 | * Filters the contents of the search query variable for display. |
| 4032 | * |
| 4033 | * @since 2.3.0 |
| 4034 | * |
| 4035 | * @param mixed $search Contents of the search query variable. |
| 4036 | */ |
| 4037 | echo esc_attr( apply_filters( 'the_search_query', get_search_query( false ) ) ); |
| 4038 | } |
| 4039 | |
| 4040 | /** |
| 4041 | * Gets the language attributes for the 'html' tag. |
| 4042 | * |
| 4043 | * Builds up a set of HTML attributes containing the text direction and language |
| 4044 | * information for the page. |
| 4045 | * |
| 4046 | * @since 4.3.0 |