phpENCODE编码，DECODE解码-PHP源码

/**
* @ string $str 要编码的字符串
* @ string $ende 操作ENCODE编码，DECODE解码
* @ string $key hash值
* @return string
*/
function code($str, $ende, $key = '') {
$coded = '';
$keylength = strlen($key);
$str = $ende == 'DECODE' ? base64_decode($str) : $str;
for($i = 0; $i
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