1  * 简单对称加密算法之加密
 2  * @param String $string 需要加密的字串
 3  * @param String $skey 加密EKY
 4  * @author Anyon Zou <zoujingli@qq.com>
 5  * @date 2013-08-13 19:30
 6  * @update 2014-10-10 10:10
 7  * @return String
 8  */
 9  function encode($string = '', $skey = 'cxphp') {
10     $strArr = str_split(base64_encode($string));
11     $strCount = count($strArr);
12     foreach (str_split($skey) as $key => $value)
13         $key < $strCount && $strArr[$key].=$value;
14     return str_replace(array('=', '+', '/'), array('O0O0O', 'o000o', 'oo00o'), join('', $strArr));
15  }
16  /**
17  * 简单对称加密算法之解密
18  * @param String $string 需要解密的字串
19  * @param String $skey 解密KEY
20  * @author Anyon Zou <zoujingli@qq.com>
21  * @date 2013-08-13 19:30
22  * @update 2014-10-10 10:10
23  * @return String
24  */
25  function decode($string = '', $skey = 'cxphp') {
26     $strArr = str_split(str_replace(array('O0O0O', 'o000o', 'oo00o'), array('=', '+', '/'), $string), 2);
27     $strCount = count($strArr);
28     foreach (str_split($skey) as $key => $value)
29         $key <= $strCount  && isset($strArr[$key]) && $strArr[$key][1] === $value && $strArr[$key] = $strArr[$key][0];
30     return base64_decode(join('', $strArr));
31  }