src/Db/Migration.php
public function dropTable($table)
    {
        $cmdPromise = $this->createCommand()->dropTable($table)->execute();
        return $this->execPromise($cmdPromise, "drop table $table");
    }
public function dropTable($table)
    {
        $cmdPromise = $this->createCommand()->dropTable($table)->execute();
        return $this->execPromise($cmdPromise, "drop table $table");
    }
Builds and executes a SQL statement for dropping a DB table.
@param string $table the table to be dropped. The name will be properly quoted by the method.
@return LazyPromiseInterface