Okay, I'm apologizing right now for this, but I hope it's at least
tolerable. I have this:

for ($i=1; $i<=$num_pages; $i++) {
        // print stuff here

For each loop, I want to add 20 to $i, so after the first iteration, I have
21, then 41, 61, etc. I've tried $i+20, $i + 20, I've tried looking in the
manual, but I assume this is some C-type function, and I'm not familiar with

Any helpers?

Jason Soza

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