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run code in 200+ php & hhvm versions
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<?php $width = 9; foreach (range(1, $width) as $i) { printf("%{$width}s\n", join(array_reverse(range(2, $i)))); }
Output for 5.6.30, hhvm-3.15.4 - 3.22.0, 7.0.0 - 7.3.0beta2
12 2 32 432 5432 65432 765432 8765432 98765432