PHP简单对称加密

/**

* 简单对称加密算法之加密

* @param String $string 需要加密的字串

* @param String $skey 加密EKY

* @author Anyon Zou <zoujingli@qq.com>

* @date 2013-08-13 19:30

* @update 2014-10-10 10:10

* @return String

*/

function encode($string = "", $skey = 'cxphp') {

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

$strCount = count($strArr);

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

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

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

}

/**

* 简单对称加密算法之解密

* @param String $string 需要解密的字串

* @param String $skey 解密KEY

* @author Anyon Zou <zoujingli@qq.com>

* @date 2013-08-13 19:30

* @update 2014-10-10 10:10

* @return String

*/

function decode($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));

}

echo '<pre>';

$str = '56,15123365247,54,四大古典风格';

echo "string : " . $str . " <br />";

echo "encode : " . ($enstring = encode($str)) . '<br />';

echo "decode : " . decode($enstring);

die();

 

输出结果

string : 56,15123365247,54,四大古典风格
encode : NcTxYpshMpTUxMjMzNjUyNDcsNTQs5Zub5aSn5Yo000ok5YW46aOO5qC8
decode : 56,15123365247,54,四大古典风格