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