Table Encoding on generation table creation query

Can not set charset options for table creation.
Now I am fix thix problem in patch.
File: doctrine-dbal/lib/Doctrine/DBAL/Schema/Schema.php

#!/usr/bin/php
<?php
/**

• Doctrine DBAL Patch
• fix table creation query encode
• (c) _Nicolay
  */
  system ('cp ./vendor/doctrine-dbal/lib/Doctrine/DBAL/Schema/Schema.php ./vendor/doctrine-dbal/lib/Doctrine/DBAL/Schema/Schema.php.Orig');

$data = file_get_contents('./vendor/doctrine-dbal/lib/Doctrine/DBAL/Schema/Schema.php');
$data = str_replace("new Table(\$tableName);",
"new Table(\$tableName,array(),array(),array(),0,array('charset'=>'utf8','collate'=>'utf8_general_ci'));",
$data);
file_put_contents('./vendor/doctrine-dbal/lib/Doctrine/DBAL/Schema/Schema.php', $data);