<?php
ini_set('display_errors', 0);
error_reporting(0);
declare(strict_types=1);

date_default_timezone_set('Australia/Melbourne');

$DB_HOST = '127.0.0.1';
$DB_USER = 'root';
$DB_PASS = '123456';
$DB_NAME = 'sms';

$conn = new mysqli($DB_HOST, $DB_USER, $DB_PASS, $DB_NAME);

if ($conn->connect_error) {
    http_response_code(500);
    exit('数据库连接失败');
}

$conn->set_charset('utf8mb4');

function e(string $str): string {
    return htmlspecialchars($str, ENT_QUOTES, 'UTF-8');
}

function app_log(string $file, string $message): void {
    $dir = __DIR__ . '/logs';
    if (!is_dir($dir)) {
        @mkdir($dir, 0777, true);
    }
    @file_put_contents($dir . '/' . $file, '[' . date('Y-m-d H:i:s') . '] ' . $message . PHP_EOL, FILE_APPEND);
}