is_search()判断是否是搜索结果页

<?php is_search(); ?>

/**
 * Is the query for a search?
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_search() {
	global $wp_query;
 
	if ( ! isset( $wp_query ) ) {
		_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
		return false;
	}
 
	return $wp_query->is_search();
}

<?php
if(is_search()){
    echo "当前页面是搜索页";
}else
{
    echo "当前页面不是搜索页";
}
?>