Nathan Nobbe wrote:
On Nov 11, 2007 9:32 PM, Robert Cummings <robert@xxxxxxxxxxxxx
<mailto:robert@xxxxxxxxxxxxx>> wrote:
On Mon, 2007-11-12 at 11:27 +1100, Chris wrote:
> Frank Lopes wrote:
> > I just started using PHP and got to think...
> >
> > Without getting into the discussion of "best practices",
strictly from
> > a performance perspective,
> > what is faster: a function or an include?
> >
> > For example I have a block of text that needs to appear
mutliple times
> > throughout the site.
> >
> > Will I be better off creating a function with its contents and then
> > later just calling the function or,
> > will it be faster (from an execution perspective) for me to
create an
> > .inc file that gets included later on?
>
> Micro-optimization is pretty useless. I seriously doubt you would
notice
> any difference in performance.
>
> This comes under the other discussions like about which is faster
- a
> foreach/while/for loop.
>
> You'll find other bottlenecks (eg changing a regex to do an
str_replace)
> which will make a bigger difference.
Actually, if you're going to use a comparison between using regex and
string replacement as an example of lower hanging optimization fruit, I
think you'll find the difference between invoking a function and
including a file to be on par. The function is by far the better
solution when considering speed.
rob is right. i said screw it and wrote out a series of test scripts;
just got
curious. so, there is one file which includes an external script that
operates
on a variable in global scope; then there is a script which defines a
function
internally; then there is a script which includes another script with
that function
defined in it.
the last one won each time; quite to my surprise.
nathan@devel ~/working/www/phpExperiments/functionVsInclude $ php
mainWInclude.php
10
totalTime: 0.001057
nathan@devel ~/working/www/phpExperiments/functionVsInclude $ php
mainWFunction.php
10
totalTime: 0.000642
nathan@devel ~/working/www/phpExperiments/functionVsInclude $ php
mainWExternalFunction.php
10
totalTime: 0.000604
As I said, it's a micro-optimization *shrug*. 0.0004 seconds difference
over 10 iterations - wow ;)
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