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function mycrypt( $str, $key ){
$slen = strlen( $str );
$klen = strlen( $key );
$cipher = ‘‘;
for ($i=0;$i<$slen;$i=$i+$klen) {
$cipher .= substr( $str, $i, $klen )^$key;
}
return $cipher;
}
接收端实现简单的解密
function myuncrypt( $str, $key ){
$slen = strlen( $str );
$klen = strlen( $key );
$plain = ‘‘;
for ($i=0;$i<$slen;$i=$i+$klen) {
$plain .= $key^substr( $str, $i, $klen );
}
return $plain;
}
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原文地址：http://www.cnblogs.com/yiyide266/p/5576784.html
