代码片段仓库

function redirect($url) {
  header('Location: ' . $url);
  exit;
}

let db;
let request = indexedDB.open('myDatabase', 1);
request.onerror = (event) => {
  console.error('DB error', event.target.error);
};
request.onsuccess = (event) => {
  db = event.target.result;
};
request.onupgradeneeded = (event) => {
  db = event.target.result;
  if (!db.objectStoreNames.contains('store')) {
    db.createObjectStore('store', { keyPath: 'id' });
  }
};

function formatDate(date) {
  const y = date.getFullYear();
  const m = String(date.getMonth() + 1).padStart(2, '0');
  const d = String(date.getDate()).padStart(2, '0');
  return `(${}-${}-${})`;
}

function jsonResponse($data, $statusCode = 200) {
  header('Content-Type: application/json');
  http_response_code($statusCode);
  echo json_encode($data);
  exit;
}

function isPrime(num) {
  if (num <= 1) return false;
  if (num === 2) return true;
  for (let i = 2; i <= Math.sqrt(num); i++) {
    if (num % i === 0) return false;
  }
  return true;
}

function generateGUID() {
  if (function_exists('com_create_guid')) {
    return trim(com_create_guid(), '{}');
  }
  return sprintf(
    '%x%x-%x-%x-%x%%x%%x',
    mt_rand(0, 0xffff), mt_rand(0, 0xffff),
    mt_rand(0, 0xffff), mt_rand(0x4000, 0xbfff),
    mt_rand(0x8000, 0xffff), mt_rand(0, 0xffff),
    mt_rand(0, 0xffff), mt_rand(0, 0xffff)
  );
}