Default Implementation of a MySQLi-Adapter Requirements: PHP 5.4 or higher

MySQLiAdapter.php

<?php

/**
 * MySQLiAdapter Class
 * Implements instance incubation of MySQLi
 */
class MySQLiAdapter
{
	/**
	 * @var string
	 */
	private $username = '';

	/**
	 * @var string
	 */
	private $password = '';

	/**
	 * @var string
	 */
	private $hostname = '';

	/**
	 * @var string
	 */
	private $database = '';

	/**
	 * @var integer
	 */
	private $port = 3306;

	/**
	 * @var MySQLi|Closure
	 */
	protected $handle = null;

	/**
	 * Class Constructor
	 * 
	 * Stores construction closure for database connection
	 */
	public function __construct()
	{
		$this->handle = function() {
			$this->handle = new MySQLi(
				$this->hostname,
				$this->username,
				$this->password,
				$this->database
			);

			return $this->handle;
		};

		$this->handle = $this->handle->bindto($this, __CLASS__);
	}

	/**
	 * setHostname()
	 * Setter: ::$hostname
	 *
	 * @param string $string
	 */
	public function setHostname($string)
	{
		$this->hostname = (string) $string;
	}

	/**
	 * setPassword()
	 * Setter: ::$password
	 *
	 * @param string $string
	 */
	public function setPassword($string)
	{
		$this->password = (string) $string;
	}

	/**
	 * setUsername()
	 * Setter: ::$username
	 *
	 * @param string $string
	 */
	public function setUsername($string)
	{
		$this->username = (string) $string;
	}

	/**
	 * setPort()
	 * Setter: ::$port
	 *
	 * @param integer $integer
	 */
	public function setPort($integer)
	{
		$this->port = (integer) $integer;
	}

	/**
	 * setDatabase()
	 * Setter: ::$database
	 *
	 * @param string $string
	 */
	public function setDatabase($string)
	{
		$this->database = (string) $string;
	}

	/**
	 * getPassword()
	 * Getter: ::$database
	 *
	 * @return string
	 */
	public function getDatabase()
	{
		return $this->database;
	}

	/**
	 * getPassword()
	 * Getter: ::$handle.
	 *
	 * @return MySQLi
	 */
	public function getConnection()
	{
		return is_callable($this->handle) ? call_user_func($this->handle) : $this->handle;
	}

	/**
	 * ::create()
	 * Factory of this adapter
	 *
	 * @param string $hostname
	 * @param string $username
	 * @param string $password
	 * @param string $database
	 * @param string $port
	 */
	public static function create($hostname, $username, $password, $database, $port = 3306)
	{
		$object = new static();
		$object->setHostname($hostname);
		$object->setPassword($password);
		$object->setDatabase($database);
		$object->setUsername($username);
		$object->setPort($port);

		return $object;
	}

}

Well, one to go. Thank's man.