Files
ny-exam-platform/bootstrap.php
T
nxxy335 87750b20c4 fix: 修复拉取大量答卷时内存耗尽(128M)导致后台刷新失败
- SurveyKingClient::listAnswers/listProjects 单页上限夹在 20~200,
  无论配置 page_size 多大,单次 json_decode 体量都被限制,避免超大响应撑爆 128M
- raw() 不再随返回值常驻完整 HTTP 正文(仅留前 2000 字符用于诊断),
  降低 json_decode 之外的额外内存占用;每页处理后及时释放引用
- bootstrap.php 在未被 php_admin_value 硬锁时临时将 memory_limit 放宽到 512M
  作为安全兜底(触顶场景:/api.php?action=data 拉取卷王全量答卷)

根因:error.log 中 PHP Fatal error Allowed memory size of 134217728 bytes exhausted
位于 SurveyKingClient.php:180 json_decode(),由上传名单后答卷量增大、
单页响应整体解码超出内存上限引发。
2026-09-10 15:45:39 +08:00

339 lines
10 KiB
PHP
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<?php
/**
* NY 问卷考试系统数据平台 - 引导 / 公共函数
* PHP >= 8.0
*/
declare(strict_types=1);
const NY_APP_NAME = 'NY问卷考试系统数据平台';
const NY_VERSION = '1.0.0';
define('NY_ROOT', str_replace('\\', '/', __DIR__));
define('NY_DATA', NY_ROOT . '/data');
// ---------------- 环境预检 ----------------
if (PHP_VERSION_ID < 80000) {
http_response_code(500);
header('Content-Type: text/html; charset=utf-8');
echo '<h2>环境不满足</h2><p>本平台需要 <b>PHP 8.0 及以上</b>,当前版本:' . PHP_VERSION . '</p>';
exit;
}
$missing = [];
foreach (['curl' => 'curl', 'json' => 'json', 'mbstring' => 'mbstring'] as $fn => $ext) {
if (!extension_loaded($ext)) {
$missing[] = $ext;
}
}
if ($missing !== []) {
http_response_code(500);
header('Content-Type: text/html; charset=utf-8');
echo '<h2>缺少 PHP 扩展</h2><p>请在 php.ini 中启用:<b>' . implode('、', $missing) . '</b></p>'
. '<p>Windows:去掉 <code>extension=' . $missing[0] . '</code> 前面的分号并重启服务。'
. '(<code>zip</code> 扩展可选,未启用时会用内置解析器读取 xlsx)</p>';
exit;
}
date_default_timezone_set('Asia/Shanghai');
mb_internal_encoding('UTF-8');
// ---------------- 内存上限(数据接口可能处理大量答卷)----------------
// 拉取卷王全量答卷做 json_decode 时极易触顶 128M;在未被禁用 / 未被 php_admin_value 硬锁的前提下
// 临时放宽到 512M。若主机用 php_admin_value 锁定了 memory_limit,下面的 ini_set 会静默失效,
// 需要改主机 php.ini(或 fpm 池配置)才能生效。
(function (): void {
$cur = (string) ini_get('memory_limit');
if ($cur === '' || $cur === '-1') {
return; // 未设置 / 已无限制,无需处理
}
$curBytes = (int) $cur;
$unit = strtoupper(substr($cur, -1));
if ($unit === 'G') {
$curBytes *= 1024 * 1024 * 1024;
} elseif ($unit === 'M') {
$curBytes *= 1024 * 1024;
} elseif ($unit === 'K') {
$curBytes *= 1024;
}
$want = 512 * 1024 * 1024;
if ($curBytes > 0 && $curBytes < $want) {
@ini_set('memory_limit', '512M');
}
})();
// ---------------- 会话 ----------------
function ny_session_start(): void
{
if (session_status() === PHP_SESSION_ACTIVE) {
return;
}
$secure = !empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off';
session_name('NYSESS');
session_set_cookie_params([
'lifetime' => 0,
'path' => '/',
'httponly' => true,
'samesite' => 'Lax',
'secure' => $secure,
]);
@session_start();
}
/** 当前是否已登录(本系统会话) */
function ny_is_auth(): bool
{
ny_session_start();
return !empty($_SESSION['ny_auth']);
}
/** 标记登录 */
function ny_login(): void
{
ny_session_start();
$_SESSION['ny_auth'] = true;
}
/** 登出 */
function ny_logout(): void
{
ny_session_start();
$_SESSION = [];
if (ini_get('session.use_cookies')) {
$p = session_get_cookie_params();
setcookie(session_name(), '', time() - 42000, $p['path'], $p['domain'], $p['secure'], $p['httponly']);
}
session_destroy();
}
/** 判断是否已安装(只看文件 config:base_url 非空即视为已具备连接配置) */
function ny_is_installed(): bool
{
$cfg = ny_load_config();
if (trim((string)($cfg['base_url'] ?? '')) === '') {
return false;
}
return is_file(ny_config_file());
}
// ---------------- 目录初始化 ----------------
foreach (['', '/cache', '/uploads'] as $sub) {
$dir = NY_DATA . $sub;
if (!is_dir($dir)) {
@mkdir($dir, 0777, true);
}
}
// 保护数据目录(Apache)
if (!file_exists(NY_DATA . '/.htaccess')) {
@file_put_contents(NY_DATA . '/.htaccess', "Deny from all\n");
}
// ---------------- 默认配置 ----------------
function ny_default_config(): array
{
return [
'base_url' => 'https://exam.nxxy335.top',
'api_prefix' => '/api',
'username' => 'admin',
'password' => '123456',
'verify_ssl' => true,
'timeout' => 20,
'refresh_interval' => 15,
'page_size' => 200,
'include_temp_save' => false,
'dedupe' => true,
'name_keywords' => '姓名,名字,学生姓名,考生姓名,您的姓名,姓名:,姓名:',
'full_score' => 100,
'full_scores' => [],
'layout' => 'default',
// 历史成绩展示方式:click=点击成员弹窗查看(默认);inline=成绩明细内直接展开每次考试
'history_display' => 'click',
// 成绩导出排序:time=按提交时间降序(默认);sid=按学号(同学号内按提交时间降序)
'export_sort' => 'time',
];
}
function ny_config_file(): string
{
return NY_DATA . '/config.json';
}
/**
* 配置来源:db | file | default
* (default 表示既没读到 DB 也没读到文件——此时账号密码是出厂默认值,几乎必然连不上卷王)
*/
function ny_config_source(): string
{
return (string)($GLOBALS['__ny_cfg_source'] ?? 'default');
}
function ny_load_config(): array
{
$GLOBALS['__ny_cfg_source'] = 'default';
// 默认配置 + 文件覆盖(DB 后端本批次已下线,统一走文件存储)
$cfg = ny_default_config();
$saved = ny_read_json(ny_config_file(), null);
if (is_array($saved)) {
foreach ($cfg as $k => $v) {
if (array_key_exists($k, $saved)) {
$cfg[$k] = is_bool($v) ? (bool)$saved[$k] : $saved[$k];
}
}
$GLOBALS['__ny_cfg_source'] = 'file';
}
$cfg['base_url'] = rtrim(trim((string)$cfg['base_url']), '/');
$cfg['api_prefix'] = '/' . trim((string)$cfg['api_prefix'], '/');
return $cfg;
}
function ny_save_config(array $cfg): bool
{
$GLOBALS['__ny_cfg_source'] = 'file';
return ny_write_json(ny_config_file(), $cfg);
}
/** 安全的字符串化(避免数组/对象转字符串报错) */
function ny_str(mixed $v): string
{
if ($v === null || is_array($v) || is_object($v)) {
return '';
}
return trim((string)$v);
}
// ---------------- JSON 文件读写 ----------------
function ny_read_json(string $file, mixed $default = null): mixed
{
if (!is_file($file)) {
return $default;
}
$raw = @file_get_contents($file);
if ($raw === false || trim($raw) === '') {
return $default;
}
$data = json_decode($raw, true);
return $data === null ? $default : $data;
}
function ny_write_json(string $file, mixed $data): bool
{
$tmp = $file . '.tmp';
$ok = @file_put_contents($tmp, json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT), LOCK_EX);
if ($ok === false) {
return false;
}
return @rename($tmp, $file) || @copy($tmp, $file);
}
// ---------------- 输出 ----------------
function ny_json(mixed $data, int $http = 200): void
{
http_response_code($http);
header('Content-Type: application/json; charset=utf-8');
header('Cache-Control: no-store');
echo json_encode($data, JSON_UNESCAPED_UNICODE | JSON_INVALID_UTF8_SUBSTITUTE);
}
function ny_ok(mixed $data = null): void
{
ny_json(['ok' => true, 'data' => $data]);
exit;
}
function ny_fail(string $msg, mixed $extra = null): void
{
ny_json(['ok' => false, 'msg' => $msg, 'extra' => $extra]);
exit;
}
// ---------------- 工具函数 ----------------
/** 规范化姓名:去空白、去全角空格、统一大小写 */
function ny_norm_name(string $s): string
{
$s = str_replace(["\xC2\xA0", ' '], '', $s);
$s = preg_replace('/\s+/u', '', $s) ?? '';
return mb_strtolower(trim($s));
}
/** 把任意结构的答卷值压平成字符串 */
function ny_flatten_value(mixed $v): string
{
if ($v === null) {
return '';
}
if (is_bool($v)) {
return $v ? '1' : '';
}
if (is_int($v) || is_float($v)) {
return trim((string)$v);
}
if (is_string($v)) {
return trim($v);
}
if (is_array($v)) {
foreach (['value', 'text', 'label', 'name', 'content', 'title'] as $k) {
if (isset($v[$k]) && (is_string($v[$k]) || is_numeric($v[$k]))) {
return trim((string)$v[$k]);
}
}
$parts = [];
foreach ($v as $item) {
$s = ny_flatten_value($item);
if ($s !== '') {
$parts[] = $s;
}
}
return implode(',', $parts);
}
return trim((string)$v);
}
/** 时间字段 -> 时间戳(秒) */
function ny_to_timestamp(mixed $v): int
{
if ($v === null || $v === '') {
return 0;
}
if (is_numeric($v)) {
$n = (int)$v;
if ($n > 1000000000000) { // 毫秒
return intdiv($n, 1000);
}
return $n;
}
$t = strtotime((string)$v);
return $t === false ? 0 : $t;
}
/** 秒 -> 12分34秒 */
function ny_format_duration(?int $sec): string
{
if ($sec === null || $sec < 0) {
return '-';
}
if ($sec < 60) {
return $sec . '秒';
}
$m = intdiv($sec, 60);
$s = $sec % 60;
if ($m < 60) {
return $m . '分' . str_pad((string)$s, 2, '0', STR_PAD_LEFT) . '秒';
}
$h = intdiv($m, 60);
return $h . '小时' . str_pad((string)($m % 60), 2, '0', STR_PAD_LEFT) . '分' . str_pad((string)$s, 2, '0', STR_PAD_LEFT) . '秒';
}
// ---------------- 类自动加载 ----------------
spl_autoload_register(function (string $class): void {
$map = [
'XlsxReader' => NY_ROOT . '/lib/XlsxReader.php',
'XlsxWriter' => NY_ROOT . '/lib/XlsxWriter.php',
'SurveyKingClient' => NY_ROOT . '/lib/SurveyKingClient.php',
'Roster' => NY_ROOT . '/lib/Roster.php',
'DataService' => NY_ROOT . '/lib/DataService.php',
'Db' => NY_ROOT . '/lib/Db.php',
];
if (isset($map[$class]) && is_file($map[$class])) {
require $map[$class];
}
});