<?php function toDigit ($num) { return strtr($num, array_flip(range("A", "Z"))); } $string = toDigit("NIULGYART"); echo "$string\n"; $string = toDigit("MDEFGHIJAMDEF"); echo "$string\n"; $string = toDigit("KLMNOPQB"); echo "$string\n"; $string = toDigit("CGZYXWVUT"); echo "$string";
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