<?php function toNum($data) { $alphabet = array( 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' ); $alpha_flip = array_flip($alphabet); $return_value = -1; $length = strlen($data); for ($i = 0; $i < $length; $i++) { $return_value += ($alpha_flip[$data[$i]] + 1) * pow(26, ($length - $i - 1)); } return $return_value; } ?>
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