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字符串加密解密类

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Release: 2016-05-25 17:00:45
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一个简单的字符串加密解密类

<?
class cryption {

function en($str,$key) {
$ret=&#39;;
$str = base64_encode ($str);
for ($i=0; $i<=strlen($str)-1; $i++){
$d_str=substr($str, $i, 1);
$int =ord($d_str);
$int=$int^$key;
$hex=strtoupper(dechex($int));
$ret.=$hex;
}
return $ret;
}

function de($str,$key) {
$ret=&#39;;
for ($i=0; $i<=strlen($str)-1; 0){
$hex=substr($str, $i, 2);
$dec=hexdec($hex);
$dec=$dec^$key;
$ret.=chr($dec);
$i=$i+2;
}
return base64_decode($ret);
}

}

$cryption=new cryption;
?>
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