gistfile1.php

<?php

$k++;
$db_host[$k] = 'dbhost_1';
$db_name[$k] = 'dbname_1';
$db_user[$k] = 'dbuser_1';
$db_pass[$k] = 'dbpass_1';

$k++;
$db_host[$k] = 'dbhost_2';
$db_name[$k] = 'dbname_2';
$db_user[$k] = 'dbuser_2';
$db_pass[$k] = 'dbpass_2';

for ( $i == 1; $i >= $k; $i++ )
{
  if ( @mysql_connect($db_host[$i],
    $db_user[$i], 
    $db_pass[$i]) )
  {
    define('DB_NAME', $db_name[$i]);
    define('DB_USER', $db_user[$i]);
    define('DB_PASSWORD', $db_pass[$i]);
    define('DB_HOST', $db_host[$i]);
    continue 1;
  }
}

if ( !defined('DB_NAME') )
{
  die();
}

$table_prefix  = 'eZb_';
define('WPLANG', '');
define('ABSPATH', dirname(__FILE__).'/');
require_once(ABSPATH.'wp-settings.php');