Development Server Error - Where is the error

[eluser]Unknown[/eluser]
Greetings,

I am testing few features before I start migrating my site to codeigniter. Now the main problem am facing is that am not able to know where the error is happening in my controller code. All I get is server error in chrome and then I know I have to go in controller and start messing around until things work again (and they do sometimes). Where/How can I get to know which line throwing error?


Thanks,