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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 |
---|---|
238 | } |
239 |
|
240 | /** |
241 | * Filter the HTML output of the search form. |
242 | * |
243 | * @since 2.7.0 |
244 | * |
245 | * @param string $form The search form HTML output. |
246 | */ |
247 | $result = apply_filters( 'get_search_form', $form ); |
248 |
|
249 | if ( null === $result ) |
250 | $result = $form; |
251 |
|
252 | if ( $echo ) |
253 | echo $result; |
254 | else |
255 | return $result; |
256 | } |