String to int encoder, decoder

StrToInt.php

<?
	protected function strToInt($string) {
		$unpacked = unpack('C*', $string);

		return join(
			array_map(function ($n) {return sprintf('%03d', $n);}, $unpacked)
		);
	}

	protected function intToStr($number) {
		$split  = str_split($number, 3);
		$mapped = array_map('chr', $split);
		$joined = join($mapped);

		return $joined;
	}