让wordpress只搜索文章标题，不检索正文内容
add_filter( 'posts_search', 'ytkah_search_by_title', 10, 2 );
function ytkah_search_by_title( $search, $wp_query ) {
if ( ! empty( $search ) && ! empty( $wp_query->query_vars['search_terms'] ) ) {
global $wpdb;
$q = $wp_query->query_vars;
$n = ! empty( $q['exact'] ) ? '' : '%';
$search = array();
foreach ( ( array ) $q['search_terms'] as $term )
$search[] = $wpdb->prepare( "$wpdb->posts.post_title LIKE %s", $n . $wpdb->esc_like( $term ) . $n );
if ( ! is_user_logged_in() )
$search[] = "$wpdb->posts.post_password = ''";
$search = ' AND ' . implode( ' AND ', $search );
}
return $search;
}wordpress只检索文章标题，不检索正文内容的解决方案。将以上代码复制到主题文件夹的function.php文件里面保存即可。
以上代码在wordpress 5.93版本测试正常
