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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 |
|---|---|
| 335 | /** |
| 336 | * Filters the HTML output of the search form. |
| 337 | * |
| 338 | * @since 2.7.0 |
| 339 | * @since 5.5.0 The `$args` parameter was added. |
| 340 | * |
| 341 | * @param string $form The search form HTML output. |
| 342 | * @param array $args The array of arguments for building the search form. |
| 343 | */ |
| 344 | $result = apply_filters( 'get_search_form', $form, $args ); |
| 345 | |
| 346 | if ( null === $result ) { |
| 347 | $result = $form; |
| 348 | } |
| 349 | |
| 350 | if ( $args['echo'] ) { |
| 351 | echo $result; |
| 352 | } else { |
| 353 | return $result; |