editing php question

[Hornstar]

Hopefully this is in the right section.

But my question is, when ever i edit a php file and if i do something wrong, it will tell me in my site, that i have done something wrong in this file on line 936 for example.

But its impossible to know which line to find the error on in large php files when im using notepad to edit them in.

I used to have a program that was a 30day trial that told me which line i was currently on and i think it used to have a debug feature, but since then ive forgotten the name, and cant seem to find any good ones or info.

So overall, does anyone know of a cheap easy solution to this.

And hopefully this the right section, i looked through them all first, and it seem to fit good, plus a search came up with nothing good.

Thanks guys

I think i have found my answer on google now, and i also think this is in the wrong section, sorry about that, ppl are still welcome to comment tho.