gistfile1.hh

<?hh

function printResult($result) {
  var_dump($result->vectorRowsTyped());
}

async function genMain() {
  $conn = await AsyncMysqlClient::connect(
    '127.0.0.1',
    3306,
    'authbox',
    'root',
    '',
  );

  $queries = [];
  for ($i = 0; $i < 1000; $i++) {
    $queries[] = "SELECT 1";
  }

  // Yay instant:
  $results = await $conn->multiQuery($queries);
  array_map(printResult, $results);

  $a = $conn->query($queries[0]);
  sleep(0.01);
  // Throws "Fatal error: Uncaught exception 'InvalidArgumentException' with message 'attempt to invoke method on a busy connection'"
  $b = $conn->query($queries[1]);

  $result = await $a;
  printResult($result);
  $result = await $b;
  printResult($result);
}

genMain()->join();