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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 |
---|---|
226 | } |
227 |
|
228 | /** |
229 | * Filters the HTML output of the search form. |
230 | * |
231 | * @since 2.7.0 |
232 | * |
233 | * @param string $form The search form HTML output. |
234 | */ |
235 | $result = apply_filters( 'get_search_form', $form ); |
236 |
|
237 | if ( null === $result ) |
238 | $result = $form; |
239 |
|
240 | if ( $echo ) |
241 | echo $result; |
242 | else |
243 | return $result; |
244 | } |