1. PHPStorm 5
2. NetBeans

PHPStorm 5 ¶

1. /yii/framework/yii.php right click "Mark as Plain text"
2. Create new php file in your project /protected directory named yii.php with this content:

<?php

class Yii extends YiiBase
{
	/**
	 * Returns the application singleton or null if the singleton has not been created yet.
	 * @return CWebApplication the application singleton, null if the singleton has not been created yet.
	 */
	public static function app()
	{
		return self::app();
	}
}

That's all. Test it. Yii::app()->user->check<ctrl+space>

NetBeans ¶

1. Tools->Options->Miscellaneous->Files->Ignored Files Pattern

^(yiilite\.php|CVS|SCCS.....

Create new php file in your project /protected directory named yii.php with this content:

<?php

class Yii extends YiiBase
{
	/**
	 * Returns the application singleton or null if the singleton has not been created yet.
	 * @return CWebApplication the application singleton, null if the singleton has not been created yet.
	 */
	public static function app()
	{
		return self::app();
	}
}

That's all. Test it. Yii::app()->user->check<ctrl+space>