<?php

header("content-type:text/html;charset=utf-8");

/**

*@param $string目标字符串

*@param $key 加密key

*@return string

*/

function encryption($string="",$key="cxphp"){

//str_split把字符串分割到数组中

$strArr = str_split(base64_encode($string));

$strcount = count($strArr);

foreach(str_split($key) as $key=>$value){

$key < $strcount && $strArr[$key].= $value;

return str_replace(array('=','+','1'), array('O0O0O', 'o000o', 'oo00o'), join($strArr));

}

}

/**

*@param $string 解析字符串

*@param $key 揭秘到key

*@return string

*/

function deciphering($string='',$skey='cxphp'){

$strArr = str_split(str_replace(array('O0O0O', 'o000o', 'oo00o'), array('=', '+', '/'), $string), 2);

$strCount = count($strArr);

foreach (str_split($skey) as $key => $value)

$key <= $strCount && @$strArr[$key][1] === $value && $strArr[$key] = $strArr[$key][0];

return base64_decode(join($strArr));

}

$a = encryption('这是我的一条测试数据');

var_dump($a);

$a = '6cLo000oZ5piv5oiR55qE5LiA5p2h5rWL6Ko000oV5pWw5o2u';

$b = deciphering($a);

var_dump($b);