At 12:06 PM -0400 7/3/08, John Campbell wrote:
On Thu, Jul 3, 2008 at 11:11 AM, Urb LeJeune <[EMAIL PROTECTED]> wrote:
Is this the same thing that you are trying to accomplish with the
for loop?
Yes but increments (or decrements) are executed much more efficiently than
additions.
This is wrong for three reasons:
1) 4 ++ increments is 2.5x slower than one increment by two.
2) Unless you are using an opcode cache, any gains from faster
execution are probably lost by the additional parsing required. Of
course this depends of the number of elements in the loop.
3) Unreadable code is orders of magnitude more expensive than the
performance benefit.
Ignoring #3, the fastest way to write it is something like:
$p = explode('|',$y);
for($i=0,$c = count($p);$i<$c;) {
echo $p[$i++],' ', $p[$i++], "<br>\n";
}
Removing the string concatenation is more beneficial than any
increment / decrement hacking.
Geek fight!
I think that all the time spent debating this issue far exceeds the
time actually saved between using one technique as compared to the
other over the next 100+ years.
It's interesting to see what we get our collective shorts in a knot about. :-)
Cheers,
tedd
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