<?php $key = @$_GET['key']; $data = @$_GET['data']; $op = @$_GET['op']; $result = ''; if (empty($key)) { $key = 'DD8E0593-B531-4785-99A7-6CC42325F81E'; } if (!empty($data)) { require_once 'des.php'; $des = new Des($key); $result = empty($op) ? $des->Encrypt($data, $key) : ($result = $des->Decrypt($data, $key)); } ?> <!DOCTYPE html> <html lang="zh-CN"> <head> <title>php_des加密/解密</title> <meta charset="UTF-8"> <style type="text/css"> .txt { width: 400px; } </style> </head> <body> <form action="index.php" method="get"> <table> <tr> <td>key</td> <td><input type="text" name="key" class="txt" value="<?php echo $key;