用AJAX方式检测wordpress重复标题提醒

posts WHERE post_status = 'publish' AND post_type = 'post' 
				AND post_title = '{$title}' AND ID != {$post_id} "; 
	$results = $wpdb->get_results($titles); 
	if($results) {
		echo "". _( '此标题已存在，请换一个标题！' , '' ) ." ";
	} else {
		echo ''._('恭喜，此标题未与其他文章标题重复！' , '').'';
	} 
	die();
}
 
// 检测后端标题并且避免同名文章更新草稿
add_action( 'publish_post','duplicate_titles_wallfa_bc' ) ;
function duplicate_titles_wallfa_bc( $post ){
	global $wpdb ;
	$title = $_POST['post_title'] ;
	$post_id = $post ; 
	$wtitles = "SELECT post_title FROM $wpdb->posts WHERE post_status = 'publish' AND post_type = 'post' 
						AND post_title = '{$title}' AND ID != {$post_id} " ; 
	$wresults = $wpdb->get_results( $wtitles ) ; 
	if ( $wresults ){
		$wpdb->update( $wpdb->posts, array( 'post_status' =>
				'draft' ), array( 'ID' => $post ) ) ;
        $arr_params = array( 'message' => '10', 'wallfaerror' => '1' )  ;      
		$location = add_query_arg( $arr_params , get_edit_post_link( $post , 'url' ) ) ;
		wp_redirect( $location  ) ;        
        exit ;
	}
}
/// 文章提交更新后的提示
add_action( 'admin_notices', 'not_published_error_notice' );   
function not_published_error_notice() {
    if(isset($_GET['wallfaerror']) == 1 ){
	   ?>