Class to manage multiple MySQL server connections in an application.

mysql.php

<?php
class mysql extends mysqli
{
	public static $servers = array();
	
	public static function ignite_server($name, $host, $username, $password, $db, $port = null, $socket = null)
	{
		if(is_null($port))
			$port = ini_get('mysqli.default_port');
			
		if(is_null($socket))
			$socket = ini_get('mysqli.default_socket');
			
		self::$servers[$name] = new mysqli($host, $username, $password, $db, $port, $socket);
		
		if(self::$servers[$name]->connect_error)
			throw new mysql_exception('Connection error. '.self::$servers[$name]->connect_error);
		
		$GLOBALS[$name] = self::$servers[$name];
		
		return self::$servers[$name];
	}
	
	public static function from_server($id)
	{
		if(!isset(self::$servers[$id]))
			throw new mysql_exception("Instance of server [$id] does not exist");
			
		return self::$servers[$id];
	}
	
	public function __get($name)
	{
		return self::from_server($name);
	}
}

class mysql_exception extends exception
{
	public function __get($name)
	{
		$method_chunks = explode('_', $name);
		$fixed = 'get';
		
		foreach($method_chunks as $chunk)
			$fixed.= ucfirst($chunk);
			
		return $this->$fixed();
	}
}