Functions vs. inline code - efficiency

[Anon]

Anyone know which would be more efficient (very psuedo-code 🙂

if ($var == 1)
{
code segment x
}
else
{
code segment y
}

--or--

if ($var == 1)
FunctionX();
else FunctionY();

(with functionX and functionY having the exact code segments as listed above)

What I guess I'm really wondering is exactly how PHP decides to look at and/or process code, if it processes a function before it's called or not, etc. Any insight is much appreciated.

Thanks,
Brian

[smarlowe]

The difference in performance will be, in almost every circustance, less important than the efficiency of the code you would put into the function / if/else blocks.

[andyman]

I thought functions were just used to make your code more understandable, and structured. 'black-box' thinking too.

Andy