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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 |
---|---|
192 |
|
193 | /** |
194 | * Filters the HTML format of the search form. |
195 | * |
196 | * @since 3.6.0 |
197 | * |
198 | * @param string $format The type of markup to use in the search form. |
199 | * Accepts 'html5', 'xhtml'. |
200 | */ |
201 | $format = apply_filters( 'search_form_format', $format ); |
202 |
|
203 | $search_form_template = locate_template( 'searchform.php' ); |
204 | if ( '' != $search_form_template ) { |
205 | ob_start(); |
206 | require( $search_form_template ); |
207 | $form = ob_get_clean(); |
208 | } else { |
209 | if ( 'html5' == $format ) { |
210 | $form = '<form role="search" method="get" class="search-form" action="' . esc_url( home_url( '/' ) ) . '"> |