[Rate] this plugin or [Donate]. Version: 2.0 Author: Narin Olankijanan Author URI: http://dekisugi.net/wpplugins License: GPLv2 */ add_action('save_post', 'dk_save_post'); function dk_save_post(){ $tags = get_tags( array('hide_empty' => false) ); $post_id = get_the_ID(); $post_content = get_post($post_id)->post_content; $post_content = strtolower($post_content); if ($tags) { foreach ( $tags as $tag ) { if ( strpos($post_content, strtolower($tag->name)) !== false) wp_set_post_tags( $post_id, $tag->name, true ); } } } /* EOF */