php字符串的加解密问题
$Str = 'This is a test string';
$Key = '9080T7&@_F98d799';
$IV = 'ABCEdfghiJ123*#$';
$EnStr = mcrypt_cbc(MCRYPT_RIJNDAEL_128,$Key,$Str,MCRYPT_ENCRYPT,$IV);
$DeStr = mcrypt_cbc(MCRYPT_RIJNDAEL_128,$Key,$EnStr,MCRYPT_DECRYPT,$IV);
echo $DeStr;
为什么输出的不是原字符串,而是原字符串后面跟着一些乱码字符???