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@ 2013-12-04T07:19:20Z

<?php
for ($i = 1; $i <= 3; $i++) {
            $nextPageNum = $i + 1;
            $backPageNum = $i + 2;
            print_r($nextPageNum);
        }

Output
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print_r: documentation ( source)

preferences:dark modelive preview

44.61 ms | 402 KiB | 5 Q