Posted by "Steve McGill" on 12/06/05 12:17

Hi everyone

Quick question:

If I have such a loop:

<?
for($i=0;$i<1000000;$i++) {
if($i==100) {
// do something special for this occurence
}
// do something standard
}
?>

In this case it seems such a waste that the if() statement is done 999999
times when it's not needed. Is there any obvious trick that I am missing?
I'm not sure how taxing a simple if() statement is on a server, maybe it's
negligible, or is it something to worry about?

Something which I'd prefer NOT to do:

<?
for($i=0;$i<100;$i++) {
// do something standard
}

// do something special for $i = 100

for($i=101;$i<1000000;$i++) {
// do something standard
}
?>

as I would have have to either keep two copies of the code or write a
function just for this purpose, which hardly seems worth it.

Thanks to anyone who takes the time to think about my question and/or
respond.

Best wishes,

Steve McGill

• Next in forum: help with preg_replace only part of the string
• Prev in forum: memory leaks with 5.1 and osx
• Thread view: Unnecessary if statement? Programming technique

[Reply to this message]