MySQL Connection Pool in PHP

Learn how to query and update data in MySQL databases.

AMPHP is a collection of event-driven libraries for PHP designed with fibers and concurrency in mind. amphp/mysql is an asynchronous MySQL client. The library implements concurrent querying by transparently distributing queries across a scalable pool of available connections. The client transparently distributes these queries across a scalable pool of available connections and does so using 100% userland PHP; there are no external extension dependencies (e.g. ext/mysqli, ext/pdo, etc.).


  • Exposes a non-blocking API for issuing multiple MySQL queries concurrently
  • Transparent connection pooling to overcome MySQL’s fundamentally synchronous connection protocol
  • MySQL transfer encoding support (gzip, TLS encryption)
  • Support for parameterized prepared statements
  • Nested transactions with commit and rollback event hooks
  • Unbuffered results to reduce memory usage for large result sets
  • Full MySQL protocol support including all available commands asynchronously

† As documented in official Mysql Internals Manual


This package can be installed as a Composer dependency.

composer require amphp/mysql


  • PHP 8.1+


More extensive code examples reside in the examples directory.

use Amp\Mysql\MysqlConfig;
use Amp\Mysql\MysqlConnectionPool;

$config = MysqlConfig::fromString(
    "host=localhost user=username password=password db=test"

$pool = new MysqlConnectionPool($config);

$statement = $pool->prepare("SELECT * FROM table_name WHERE id = :id");

$result = $statement->execute(['id' => 1337]);
foreach ($result as $row) {
    // $row is an associative-array of column values, e.g.: $row['column_name']


amphp/mysql follows the semver semantic versioning specification like all other amphp packages.


If you discover any security related issues, please use the private security issue reporter instead of using the public issue tracker.


The MIT License (MIT). Please see LICENSE for more information.