Pdo V20 Extended Features

  • Pool methods:
  • Multiplexing: drivers may optionally implement a multiplexed transport allowing a single physical connection to service multiple logical handles with multiplexing semantics exposed through capability flags.
  • Health checks and automatic reconnection: pool manages stale/failed connections transparently; application can register onConnectionLost callbacks.

    • Example:

    $pool = PDO::createPool([
  'dsn' => 'mysql:host=db;dbname=app',
  'username' => 'user',
  'password' => 'pass',
  'maxSize' => 50,
  'minIdle' => 5,
]);
$handle = $pool->acquire();
$stmt = $handle->prepare('SELECT * FROM users WHERE id = :id');
$stmt->execute([':id' => 1]);
$handle->release();

    Example:

    $stmt->bindValue(':payload', $jsonString, PDO::PARAM_JSON);
$stmt->bindValue(':price', '12.34', PDO::PARAM_DECIMAL, ['scale'=>2]);

    One of the most overlooked performance boosters is the bulk operation feature. Instead of looping and re-preparing statements, you can now batch inserts/updates in one round-trip. pdo v20 extended features

    Modern PDO allows retrieving statement-level driver-specific attributes: Pool methods:

    if ($stmt->getAttribute(PDO::ATTR_DRIVER_NAME) === 'mysql') 
    $stmt->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, false);

    No more guessing which driver you're on. Example: $pool = PDO::createPool([ 'dsn' =&gt