function updateTopic( $topic_id , $status ) {
	// our function to check if a topic has been read or not
	if ( isset( $this->logged['id'] ) ) {
		$post_indicate->user_id = $this->logged['id'];
	} else {
		$post_indicate->user_id = 0;
	}
	$post_indicate->time = time();
	$post_indicate->type = $status;
	$post_indicate->check = $this->sql->sql_query( "SELECT * FROM `".$this->tbl_prefix."post_indicate` WHERE `user_id` = '".$post_indicate->user_id."'" , 1 );
	$post_indicate->num = $this->sql->sql_num_rows( $post_indicate->check );
	if ( $post_indicate->num > 0 ) {
		$post_indicate->row = $this->sql->sql_fetch_array( $post_indicate->check );
		$post_indicate->recently_viewed = unserialize( $post_indicate->row['recently_viewed'] );
		if ( $post_indicate->type == '1' ) {
			if ( !isset( $post_indicate->recently_viewed[''.$topic_id.''] ) ) {
				$post_indicate->recently_viewed[''.$topic_id.''] .= array(
				$topic_id => "1",
				);
			}
			$post_indicate->new_recently_viewed = serialize( $post_indicate->recently_viewed );
			$this->sql->sql_query( "UPDATE `".$this->tbl_prefix."post_indicate` SET `recently_viewed` = '".$post_indicate->new_recently_viewed."', `time` = '".$post_indicate->time."' WHERE `user_id` = '".$post_indicate->user_id."'" , 1 );
		} else {
			$post_indicate->loop_rows = $this->sql->sql_query( "SELECT * FROM `".$this->tbl_prefix."post_indicate`" , 1 );
			while ( $post_indicate->loop_row = $this->sql->sql_fetch_array( $post_indicate->loop_rows ) ) {
				$post_indicate->this_recently_viewed = unserialize( $post_indicate->loop_row['recently_viewed'] );
				if( !isset( $post_indicate->this_recently_viewed[''.$topic_id.''] ) ) {
					unset( $post_indicate->this_recently_viewed[''.$topic_id.''] );
				}
				$post_indicate->new_this_recently_viewed = serialize( $post_indicate->this_recently_viewed );
				$this->sql->sql_query( "UPDATE `".$this->tbl_prefix."post_indicate` SET `recently_viewed` = '".$post_indicate->new_this_recently_viewed."', `time` = '".$post_indicate->time."' WHERE `user_id` = '".$post_indicate->loop_row['user_id']."'" , 1 );
			}
		}
	} elseif ( $post_indicate->num == 0 ) {
		if ( $post_indicate->type == '1' ) {
			$post_indicate->insert_recently_viewed = array();
			$post_indicate->insert_recently_viewed[''.$topic_id.''] .= array(
			$topic_id => "1",
			);
			$post_indicate->insert_recently_viewed = serialize( $post_indicate->insert_recently_viewed );
			$this->sql->sql_query( "INSERT INTO `".$this->tbl_prefix."post_indicate` (time,user_id,recently_viewed) VALUES('".$post_indicate->time."','".$post_indicate->user_id."','".$post_indicate->insert_recently_viewed."')" , 1 );
		} else {
			$post_indicate->loop_rows = $this->sql->sql_query( "SELECT * FROM `".$this->tbl_prefix."post_indicate`" , 1 );
			while ( $post_indicate->loop_row = $this->sql->sql_fetch_array( $post_indicate->loop_rows ) ) {
				$post_indicate->this_recently_viewed = unserialize( $post_indicate->loop_row['recently_viewed'] );
				if( !isset( $post_indicate->this_recently_viewed[''.$topic_id.''] ) ) {
					unset( $post_indicate->this_recently_viewed[''.$topic_id.''] );
				}
				$post_indicate->new_this_recently_viewed = serialize( $post_indicate->this_recently_viewed );
				$this->sql->sql_query( "UPDATE `".$this->tbl_prefix."post_indicate` SET `recently_viewed` = '".$post_indicate->new_this_recently_viewed.", `time` = '".$post_indicate->time." WHERE `user_id` = '".$post_indicate->loop_row['user_id']."'" , 1 );
			}
		}
	}
	// our function to check if a topic has been read or not
}