StartTime - Hhvm — ContextQMD

:::info[Note] This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information. :::

The start time when the error was produced, in seconds since epoch

Hack

public function startTime(): float;

Returns

float - the start time as float seconds since epoch.

Examples

When an error occurs when establishing a connection or on a query, and you catch the exception that is thrown, you will get an AsyncMysqlErrorResult. And one of the methods on an AsyncMysqlErrorResult is startTime(), which tells you when the connection operation began.

Note that

  elapsedMicros() ~== endTime() - startTime()

basic-usage.hack

use \Hack\UserDocumentation\API\Examples\AsyncMysql\ConnectionInfo as CI;

async function connect(
  \AsyncMysqlConnectionPool $pool,
): Awaitable<\AsyncMysqlConnection> {
  return await $pool->connect(
    CI::$host,
    CI::$port,
    CI::$db,
    CI::$user,
    CI::$passwd,
  );
}
async function simple_query_error(): Awaitable<int> {
  $pool = new \AsyncMysqlConnectionPool(darray[]);
  $conn = await connect($pool);
  try {
    $result = await $conn->query('SELECT bogus FROM bogus WHERE bogus = 1');
  } catch (\AsyncMysqlQueryException $ex) {
    $qr = $ex->getResult();
    // Actually `AsyncMysqlQueryErrorResult`
    \var_dump($qr is \AsyncMysqlErrorResult);
    \var_dump($qr->startTime());
    $conn->close();
    return 0;
  }
  $conn->close();
  return $result->numRows();
}

<<__EntryPoint>>
async function run(): Awaitable<void> {
  $r = await simple_query_error();
  \var_dump($r);
}
```.hhvm.expectf
bool(true)
float(%f)
int(%d)
```.example.hhvm.out
bool(true)
float(17246.106603)
int(0)
```.skipif
await \Hack\UserDocumentation\API\Examples\AsyncMysql\skipif_async();