Create param.php file in protected/config

Yii::app()->params['TEXT_ACTIVE'] = 'Active'; //1 for active

Yii::app()->params['AD_LAYOUT_POISITION'] = array(
													"1" => array(
																	'width' => '1000', 
																	'height' => '150'
																),
													"2" => array(
																	'width' => '200',
																	'height' => '150'
																),
													"3" => array(
																	'width' => '1000',
																	'height' => '150'
																),
													"4" => array(
																	'width' => '200',
																	'height' => '150'
																),
																												
													);

Now include this file in protected/config/main.php

require_once( dirname(__FILE__) . '/params.php');
return array(
	'basePath'=>dirname(__FILE__).DIRECTORY_SEPARATOR.'..',
         ....

Now suppose I have to call TEXT_ACTIVE I will write in my file as

echo Yii::app()->params['TEXT_ACTIVE'];