Base64を適当にひらがなに置き換えてしまうやーつ

base64kana.php

<?php
class base64kana {
	const CNV_TABLE = array(
		"A" => "あ",		"B" => "い",		"C" => "う",		"D" => "え",		"E" => "お",
		"F" => "か",		"G" => "き",		"H" => "く",		"I" => "け",		"J" => "こ",
		"K" => "さ",		"L" => "し",		"M" => "す",		"N" => "せ",		"O" => "そ",
		"P" => "た",		"Q" => "ち",		"R" => "つ",		"S" => "て",		"T" => "と",
		"U" => "な",		"V" => "に",		"W" => "ぬ",		"X" => "ね",		"Y" => "の",
		"Z" => "は",		"a" => "ひ",		"b" => "ふ",		"c" => "へ",		"d" => "ほ",
		"e" => "ま",		"f" => "み",		"g" => "む",		"h" => "め",		"i" => "も",
		"j" => "や",		"k" => "ゆ",		"l" => "よ",	
		"m" => "ら",		"n" => "り",		"o" => "る",		"p" => "れ",		"q" => "ろ",	
		"r" => "わ",
		"s" => "が",		"t" => "ぎ",		"u" => "ぐ",		"v" => "げ",		"w" => "ご",
		"x" => "ざ",		"y" => "じ",		"z" => "ず",		"0" => "ぜ",		"1" => "ぞ",	
		"2" => "だ",		"3" => "ぢ",		"4" => "づ",		"5" => "で",		"6" => "ど",
		"7" => "ば",		"8" => "び",		"9" => "ぶ",		"+" => "べ",		"/" => "ぼ",
		"=" => "ん",
	);
	
	public function encode($str){
		$tmp = base64_encode($str);
		return str_replace(array_keys(self::CNV_TABLE), array_values(self::CNV_TABLE), $tmp);
	}
	public function decode($str){
		$tmp = str_replace(array_values(self::CNV_TABLE), array_keys(self::CNV_TABLE), $str);
		return base64_decode($tmp);
	}
}
?>