PHP_VERSION_ID >= 70400,
'val' => PHP_VERSION . '（需 7.4 以上）',
];
// 2. 必需扩展
$needExt = ['pdo_mysql' => '数据库', 'mbstring' => '中文处理', 'openssl' => '敏感字段加密', 'json' => '配置与接口', 'gd' => '图片裁剪'];
foreach ($needExt as $ext => $why) {
$ok = extension_loaded($ext);
$checks['扩展 ' . $ext] = ['ok' => $ok, 'val' => $ok ? '已加载 · ' . $why : '缺失 · ' . $why];
}
// 3. 配置文件
$checks['配置文件 config.php'] = [
'ok' => $hasConfig,
'val' => $hasConfig ? '已就位' : '未找到（请复制 config.example.php 后填写）',
];
// 4. 数据库连接（只有配置齐全才去连）
if (is_array($config) && !empty($config['db'])) {
$d = $config['db'];
try {
$dsn = sprintf(
'mysql:host=%s;port=%d;dbname=%s;charset=%s',
$d['host'], $d['port'], $d['name'], $d['charset']
);
$pdo = new PDO($dsn, $d['user'], $d['pass'], [
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_EMULATE_PREPARES => false,
]);
$ver = $pdo->query('SELECT VERSION()')->fetchColumn();
$checks['数据库连接'] = ['ok' => true, 'val' => 'MySQL ' . $ver . ' · 库 ' . $d['name']];
} catch (Throwable $e) {
$checks['数据库连接'] = [
'ok' => false,
'val' => $debug ? $e->getMessage() : '连接失败（把 config.php 的 debug 设为 true 可看详情）',
];
}
}
$allOk = true;
foreach ($checks as $c) {
$allOk = $allOk && $c['ok'];
}
$siteName = is_array($config) && !empty($config['site_name']) ? $config['site_name'] : '家书';
?>
<?= htmlspecialchars($siteName, ENT_QUOTES, 'UTF-8') ?> · 环境自检
, ENT_QUOTES, 'UTF-8') ?>)
· 环境自检
FamilyBook —— 一本用岁月写成的家谱