1 2 3 4 5 6 7 8 9
<?php $nums = array(1.3, 2.6, 8.8, 3.7); for ($i = 0; $i < count($nums); $i++) { echo (round($nums[$i] * 2) / 2) . "\n"; } ?>
1 2 3 4
1.5 2.5 9 3.5