WordPress at a glance

get_search_form() WP 1.0

Display search form.

Will first attempt to locate the searchform.php file in either the child or the parent, then load it. If it doesn't exist, then the default search form will be displayed. The default search form is HTML, which will be displayed. There is a filter applied to the search form HTML in order to edit or replace it. The filter is 'get_search_form'.

This function is primarily used by themes which want to hardcode the search form into the sidebar and also by the search widget in WordPress.

There is also an action that is called whenever the function is run called, 'pre_get_search_form'. This can be useful for outputting JavaScript that the search relies on or various formatting that applies to the beginning of the search. To give a few examples of what it can be used for.

No Hooks.

Return

String/null. String when $echo is false.

Usage

get_search_form( $echo );
$echo(true/false)
Default to echo and not return the form.
Default: true

Code of get_search_form: wp-includes/general-template.php VER 5.0.1

<?php
function get_search_form( $echo = true ) {
	/**
	 * Fires before the search form is retrieved, at the start of get_search_form().
	 *
	 * @since 2.7.0 as 'get_search_form' action.
	 * @since 3.6.0
	 *
	 * @link https://core.trac.wordpress.org/ticket/19321
	 */
	do_action( 'pre_get_search_form' );

	$format = current_theme_supports( 'html5', 'search-form' ) ? 'html5' : 'xhtml';

	/**
	 * Filters the HTML format of the search form.
	 *
	 * @since 3.6.0
	 *
	 * @param string $format The type of markup to use in the search form.
	 *                       Accepts 'html5', 'xhtml'.
	 */
	$format = apply_filters( 'search_form_format', $format );

	$search_form_template = locate_template( 'searchform.php' );
	if ( '' != $search_form_template ) {
		ob_start();
		require( $search_form_template );
		$form = ob_get_clean();
	} else {
		if ( 'html5' == $format ) {
			$form = '<form role="search" method="get" class="search-form" action="' . esc_url( home_url( '/' ) ) . '">
				<label>
					<span class="screen-reader-text">' . _x( 'Search for:', 'label' ) . '</span>
					<input type="search" class="search-field" placeholder="' . esc_attr_x( 'Search &hellip;', 'placeholder' ) . '" value="' . get_search_query() . '" name="s" />
				</label>
				<input type="submit" class="search-submit" value="'. esc_attr_x( 'Search', 'submit button' ) .'" />
			</form>';
		} else {
			$form = '<form role="search" method="get" id="searchform" class="searchform" action="' . esc_url( home_url( '/' ) ) . '">
				<div>
					<label class="screen-reader-text" for="s">' . _x( 'Search for:', 'label' ) . '</label>
					<input type="text" value="' . get_search_query() . '" name="s" id="s" />
					<input type="submit" id="searchsubmit" value="'. esc_attr_x( 'Search', 'submit button' ) .'" />
				</div>
			</form>';
		}
	}

	/**
	 * Filters the HTML output of the search form.
	 *
	 * @since 2.7.0
	 *
	 * @param string $form The search form HTML output.
	 */
	$result = apply_filters( 'get_search_form', $form );

	if ( null === $result )
		$result = $form;

	if ( $echo )
		echo $result;
	else
		return $result;
}

Related Functions

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