I'd like to breakpoint on built-in PHP session management functions such as session_start().
Is there any way to do this?

I don't think so. When you accidentally get the IDE to try to break on built-in code (usually through use of eval()), you just get an error message that basically says the code couldn't be found.

Even if you could break around a built-in function, it'd only be on entrance or exit; since the definition code itself is compiled C.

If you want to achieve that same effect now, you'll need to call the function from inside your own wrapper function, and then break in the wrapper. It's a little messy depending on what exactly you're trying to do, but it's typically just a search-and-replace away.

Like bobwilliams said: wrap the function with another function?



Dunno, if that helps?