Convert phpBB2 to phpBB3 (update phpBB 2.0.x to phpBB 3.0.x)

There is this parenting forum i frequent.. i helped to convert or upgrade the phpBB forum board from the phpBB version 2.0.21 to the latest as of today phpBB 3.0.4

The installation was pretty straight forward, just follow their document. I am full of praises. It is very well written. No ambiguity, no guessing. The scary part in any software "migration" is the migration of data.. the database structure changed and yet we want old data.. we are so used to digital life now that we want to save everything in soft copy.. data migration is a must.. but generally most headache.. anyway, the phpBB3.0.4 has conversion part built-in.. really easy..

However, the built-in convertor cause some connection timed-out during conversion.. So, me the ever google-queen, did some googling and found this link.

Here's a summary:
Open phpbb3/install/install_convert.php

Find these lines:

/**
*
* @package install
* @version $Id: install_convert.php,v 1.53 2007/10/11 08:12:25 acydburn Exp $
* @copyright (c) 2006 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/

/**
*/

After those lines, add:

@set_time_limit(0);
@ini_set('memory_limit', '256M');
@ini_set('upload_max_filesize', '128M');
@ini_set('post_max_size', '256M');
@ini_set('max_input_time', '-1');
@ini_set('max_execution_time', '-1');
@ini_set('expect.timeout', '-1');
@ini_set('default_socket_timeout', '-1');
(Adjust timeouts and size as needed.)

Next find:
var $batch_size = 2000;

Change to:
var $batch_size = 6000;

After editting the above file, follow the conversion steps in phpBB - Conversion from phpBB 2.0.x to phpBB 3.0.x.. and hey, we are done.. Good luck.

Reference:
1. phpBB2 - phpBB3 Feature Comparison