On Wed, 2006-09-20 at 17:13 -0700, Christopher Watson wrote:
> I've been coding with PHP for maybe a year. So I'm somewhat new to
> it. But I've learned quickly, and created a fairly serious LAMP app
> that is capable of returning large query results. During my
> investigation into various means for incrementally reducing the
> response sizes, I've discovered output buffering with a callback
> function. So, as an experiment, I bracketed my includes of the
> Fusebox files in index.php with ob_start('sweeper') and
> ob_end_flush(), and placed the simple callback function at the top of
> the file that performs a preg_replace on the buffer to strip all
> excess space:
>
> function sweeper($buffer) {
> return preg_replace("/\s\s+/", " ", $buffer);
> }
>
> Results? Kinda nice! A large query result measuring over 900K of
> HTML is reduced to 600K. With no change at the browser. Still valid
> HTML, and the browser happily gobbles it up and displays it cleanly.
> It's just 30% faster getting to me.
>
> Now, the question. Is this going to bite me in the ass? 'Cause right
> now, it looks dang good to me. Great bang for the buck, as far as I'm
> concerned. I've been churning it over in my head, and I don't see a
> situation (certainly not in my particular app) where doing this
> whitespace reduction is going to backfire. There isn't anything in
> any of this that requires the contiguous non-word characters.
>
> I have a feeling though, that one of you more learned PHPers are going
> to tell me exactly where my ass is gonna start hurtin'.
Should be an issue as long as you're not stripping whitespace from
between <pre></pre> tags. Although, one must wonder why you don't just
use output compression since all that whitespace would just compress
anyways as would all the other content. In fact 900k with fairly
standard content would shrink to about 90k.
Cheers,
Rob.
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