AsyncMysqlConnection::close
Close the current connection
public function close(): void;
Returns
void
Examples
Closing a database connection is usually a good idea. This example shows the closing of a connection using AsyncMysqlConnection::close and then tries to invoke a query on that connection afterwards.
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(): Awaitable<int> {
$pool = new \AsyncMysqlConnectionPool(darray[]);
$conn = await connect($pool);
$result = await $conn->query('SELECT name FROM test_table WHERE userID = 1');
$conn->close();
try {
$result2 = await $conn->query(
'SELECT name FROM test_table WHERE userID = 1',
);
} catch (\Exception $ex) { // probably InvalidArgumentException on query
echo "Connection closed\n";
}
return $result->numRows();
}
<<__EntryPoint>>
async function run(): Awaitable<void> {
$r = await simple_query();
\var_dump($r);
}
```.hhvm.expectf
Connection closed
int(%d)
```.example.hhvm.out
Connection closed
int(1)
```.skipif
await \Hack\UserDocumentation\API\Examples\AsyncMysql\skipif_async();