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admin.php
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admin.php
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<?php
// 设置SQLite数据库文件路径和上传文件夹路径
$databaseFile = 'data.db';
$uploadsFolder = 'uploads/';
// 处理下载全部图片
if (isset($_POST['download_images'])) {
createAndDownloadZip($uploadsFolder);
}
// 处理生成和下载CSV文件
if (isset($_POST['download_csv'])) {
generateAndDownloadCSV($databaseFile);
}
// 处理在线预览data.db信息
if (isset($_POST['preview_db'])) {
previewDatabase($databaseFile);
}
// 处理反查数据库信息
if (isset($_POST['search_db'])) {
$searchField = $_POST['search_field'];
$searchValue = $_POST['search_value'];
searchDatabase($databaseFile, $searchField, $searchValue);
}
// 创建并下载压缩文件
// 使用ZipArchive扩展,确保已安装
function createAndDownloadZip($folderPath) {
$zip = new ZipArchive();
$zipFileName = 'images.zip';
if ($zip->open($zipFileName, ZipArchive::CREATE | ZipArchive::OVERWRITE)) {
$files = new RecursiveIteratorIterator(
new RecursiveDirectoryIterator($folderPath),
RecursiveIteratorIterator::LEAVES_ONLY
);
foreach ($files as $name => $file) {
if (!$file->isDir()) {
$filePath = $file->getRealPath();
$relativePath = substr($filePath, strlen($folderPath) + 1);
$zip->addFile($filePath, $relativePath);
}
}
$zip->close();
// 提示下载
header('Content-Type: application/zip');
header('Content-disposition: attachment; filename=' . $zipFileName);
header('Content-Length: ' . filesize($zipFileName));
readfile($zipFileName);
// 删除临时文件
unlink($zipFileName);
}
}
// 生成并下载CSV文件
// 使用 fputcsv 函数
function generateAndDownloadCSV($databaseFile) {
$db = new SQLite3($databaseFile);
$result = $db->query('SELECT * FROM practices');
$csvFileName = 'data.csv';
$csvFile = fopen($csvFileName, 'w');
// 添加CSV头
$header = ['ID', '标题', '内容', '姓名', '学号', '图片路径', '时间戳'];
fputcsv($csvFile, $header);
while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
fputcsv($csvFile, $row);
}
fclose($csvFile);
$db->close();
// 提示下载
header('Content-Type: text/csv');
header('Content-disposition: attachment; filename=' . $csvFileName);
header('Content-Length: ' . filesize($csvFileName));
readfile($csvFileName);
// 删除临时文件
unlink($csvFileName);
}
// 在线预览data.db信息
function previewDatabase($databaseFile) {
$db = new SQLite3($databaseFile);
$result = $db->query('SELECT * FROM practices');
echo '<table border="1"><tr>';
for ($i = 0; $i < $result->numColumns(); $i++) {
echo '<th>' . $result->columnName($i) . '</th>';
}
echo '</tr>';
while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
echo '<tr>';
foreach ($row as $value) {
echo '<td>' . $value . '</td>';
}
echo '</tr>';
}
echo '</table>';
$db->close();
}
// 反查数据库信息
function searchDatabase($databaseFile, $field, $value) {
$db = new SQLite3($databaseFile);
$query = "SELECT * FROM practices WHERE $field = :value";
$stmt = $db->prepare($query);
$stmt->bindValue(':value', $value, SQLITE3_TEXT);
$result = $stmt->execute();
echo '<table border="1"><tr>';
for ($i = 0; $i < $result->numColumns(); $i++) {
echo '<th>' . $result->columnName($i) . '</th>';
}
echo '</tr>';
while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
echo '<tr>';
foreach ($row as $value) {
echo '<td>' . $value . '</td>';
}
echo '</tr>';
}
echo '</table>';
$db->close();
}
?>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<title>管理员页面</title>
</head>
<body>
<h2>管理员页面</h2>
<form method="post" action="">
<button type="submit" name="download_images">下载全部图片</button>
<button type="submit" name="download_csv">下载CSV文件</button>
<button type="submit" name="preview_db">在线预览data.db信息</button>
<label for="search_field">反查数据库字段:</label>
<select name="search_field">
<option value="title">标题</option>
<option value="content">内容</option>
<option value="name">姓名</option>
<option value="student_number">学号</option>
<option value="image_path">图片路径</option>
</select>
<input type="text" name="search_value" placeholder="搜索值">
<button type="submit" name="search_db">搜索</button>
</form>
</body>
</html>