Hi,

Maybe 3 part:
debug = 0 : show some error only to 1st super admin (but : think it's best to log error in a file)
debug = 1 : show error to super admin
debug = 2 : show error to any admin
debug = 3 : show error for whole

Or another option : debugView : 0/1/2/3

I think it's always best to take the error to be shown by server only :
https://github.com/LimeSurvey/LimeSurvey/blob/master/index.php#L173

Something with : if super admin : reset error_reporting to default from server ....

Cool, I was thinking more in the lines of an error log interface in the admin.

You mean something : a show debug log in Admin part : and show the log of Yii ?

If yes :

Start by set error loging to a file in internal.php : 'class'=>'CFileLogRoute',
http://www.yiiframework.com/doc/guide/1.1/en/topics.logging

And add, somewhere, in admin part to see this file .

Better idea !

PS: we can add actually log in config.php file, in web too.

PS: remind : it's alway better to log elsewhere : web don't need access to log file ..... (in 3.0 : runtime is not inside web dir).

Yes, a debug log in admin, but only if we have errors (or maybe we can enable/disable it in global settings?). That way we can encourage users to report bugs, and we don't have to tell them to "set debug = 2 and reload".

'levels'=>'error',
'categories'=>'system.*',

We can even log in a sqlite DB CDbLogRoute

I already use sqlite DB for some caching in plugin.

See some idea : https://github.com/LimeSurvey/LimeSurvey/pull/1089#issuecomment-401286535