rechercher par mot clé api wordpress

filter-search.php

<?php

add_filter('terms_clauses', 'w_term_search_clauses', 10, 3 );
function w_term_search_clauses( $clauses, $taxonomies, $args ) {
	if ( ! empty( $taxonomies ) && in_array( 'product_cat', $taxonomies ) ) {
		if ( ! empty( $args['search'] ) ) {
			global $wpdb;
			$like = '%' . $wpdb->esc_like( $args['search'] ) . '%';
			$clauses['join'] .= " INNER JOIN {$wpdb->termmeta} AS tm ON t.term_id = tm.term_id";
			$clauses['where'] = preg_replace( '/\)$/', $wpdb->prepare(" OR (tm.meta_key = 'analog_search' AND tm.meta_value LIKE %s))", $like ), $clauses['where'] );
		}
	}
	return $clauses;
}