#### PHP记得安装扩展mcrypt ```php public function encryptWithOpenssl($k, $v, $data = '') { return base64_encode(openssl_encrypt($data, "AES-128-CBC", $k, OPENSSL_RAW_DATA, $v)); } public function decryptWithOpenssl($k, $v, $data = '') { return openssl_decrypt(base64_decode($data), "AES-128-CBC", $k, OPENSSL_RAW_DATA, $v); } ```