swoole-framwork/core/lib/PDOPool.php

<?php

namespace Core\lib;

class PDOPool extends DBPool
{
    public function __construct($min = 5, $max = 10)
    {
        global $GLOBAL_CONFIGS;
        $poolconfig = $GLOBAL_CONFIGS["dbpool"]["default"];
        parent::__construct($poolconfig['min'], $poolconfig['max']);
        //\Swoole\Runtime::enableCoroutine(true);
    }

    protected function newDB()
    {
        global $GLOBAL_CONFIGS;
        $default = $GLOBAL_CONFIGS["db"]["default"];
        {
            $driver   = $default["driver"];
            $host     = $default["host"];
            $dbname   = $default['database'];
            $username = $default["username"];
            $password = $default["password"];
            $dsn      = "$driver:host=$host;dbname=$dbname";
        }
        $options = array(
            \PDO::ATTR_PERSISTENT => true
        );
        $pdo = new \PDO($dsn, $username, $password);
        return $pdo;
    }
}