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[WP] Include terms in WordPress standard search results + WPML compatibility
function custom_search_where($where){
global $wpdb;
if (is_search() && get_search_query())
$where .= "OR (( LIKE '%".get_search_query()."%' OR t.slug LIKE '%".get_search_query()."%') AND {$wpdb->posts}.post_status = 'publish')";
if (function_exists('icl_get_languages')) {
$lang_code = 'it'; // better set a default lang code as fallback here
if(defined('ICL_LANGUAGE_CODE') && ICL_LANGUAGE_CODE != '') {
$lang_code = ICL_LANGUAGE_CODE;
$where .= "AND language_code = '".$lang_code."'";
return $where;
function custom_search_join($join){
global $wpdb;
if (is_search()&& get_search_query())
$join .= "LEFT JOIN {$wpdb->term_relationships} tr ON {$wpdb->posts}.ID = tr.object_id INNER JOIN {$wpdb->term_taxonomy} tt ON tt.term_taxonomy_id=tr.term_taxonomy_id INNER JOIN {$wpdb->terms} t ON t.term_id = tt.term_id";
return $join;
function custom_search_groupby($groupby){
//if(is_admin()) return;
global $wpdb;
// we need to group on post ID
$groupby_id = "{$wpdb->posts}.ID";
if(!is_search() || strpos($groupby, $groupby_id) !== false || !get_search_query()) return $groupby;
// groupby was empty, use ours
if(!strlen(trim($groupby))) return $groupby_id;
// wasn't empty, append ours
return $groupby.", ".$groupby_id;
if(!is_admin()) {
add_filter('posts_join', 'custom_search_join');
add_filter('posts_groupby', 'custom_search_groupby');
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