$title,
'author' => '',
'date' => '',
'platform' => ''
];
// 提取并移除 YAML front matter
if (preg_match('/^---\s*\n(.*?)\n---\s*\n(.*)$/s', $content, $matches)) {
$yaml = $matches[1];
$content = $matches[2];
// 解析元数据（用于页面标题）
if (preg_match('/^title:\s*["\']?(.+?)["\']?\s*$/m', $yaml, $m)) {
$title = trim($m[1], '"\'');
$meta['title'] = $title;
}
if (preg_match('/^author:\s*(.+?)\s*$/m', $yaml, $m)) {
$meta['author'] = trim($m[1]);
}
if (preg_match('/^date:\s*(.+?)\s*$/m', $yaml, $m)) {
$meta['date'] = trim($m[1]);
}
if (preg_match('/^platform:\s*(.+?)\s*$/m', $yaml, $m)) {
$meta['platform'] = trim($m[1]);
}
}
// 简单的 Markdown 转换
function markdownToHtml($text) {
// 标题
$text = preg_replace('/^#### (.*$)/m', '$1
', $text);
$text = preg_replace('/^### (.*$)/m', '$1
', $text);
$text = preg_replace('/^## (.*$)/m', '$1
', $text);
$text = preg_replace('/^# (.*$)/m', '$1
', $text);
// 粗体和斜体
$text = preg_replace('/\*\*(.+?)\*\*/', '$1', $text);
$text = preg_replace('/\*(.+?)\*/', '$1', $text);
// 代码块
$text = preg_replace('/```(\w*)\n(.*?)```/s', '$2
', $text);
$text = preg_replace('/`(.+?)`/', '$1', $text);
// 链接
$text = preg_replace('/\[(.+?)\]\((.+?)\)/', '$1', $text);
// 列表
$text = preg_replace('/^- (.*$)/m', '$1', $text);
$text = preg_replace('/(.*<\/li>\n?)+/', '', $text);
// 段落
$text = preg_replace('/\n\n/', '', $text);
$text = '
' . $text . '
';
return $text;
}
// 高亮搜索词
function highlightSearch($text, $search) {
if (empty($search)) return $text;
return preg_replace('/(' . preg_quote($search, '/') . ')/i',
'$1', $text);
}
$htmlContent = markdownToHtml(htmlspecialchars($content));
if ($search) {
$htmlContent = highlightSearch($htmlContent, $search);
}
$folder = dirname($file) !== '.' ? dirname($file) : '';
?>
<?php echo htmlspecialchars($title); ?> - 知识库