public static function setConfig($config)
{
if (empty($config)) {
throw new Exception('config array empty');
}
$config = array_merge(array('host' => 'localhost', 'username' => 'root'), $config);
if (!empty(self::$config)) {
// 只准运行一次
throw new Exception('db can be set config only once');
}
if (isset($config['force']) && $config['force'] === 'master') {
self::$forceMaster = true;
}
// username and password
if (isset($config['username'])) {
$username = $config['username'];
} else {
throw new Exception('config no username');
}
if (isset($config['password'])) {
$password = $config['password'];
}
if (isset($config['pwd'])) {
$password = $config['pwd'];
}
if (!isset($config['password']) && !isset($config['pwd'])) {
throw new Exception('config no password');
}
// first look for dsn
if (isset($config['dsn'])) {
$dsn = $config['dsn'];
if (isset($config['dsn_s'])) {
$dsn_s = $config['dsn_s'];
}
}
// then look for master or slave or no
if (isset($config['host'])) {
$conf['host'] = $config['host'];
}
if (isset($config['port'])) {
$conf['port'] = $config['port'];
}
if (isset($config['dbname'])) {
$conf['dbname'] = $config['dbname'];
}
if (isset($config['master'])) {
$master = array_merge($conf, $config['master']);
} else {
$master = $conf;
}
if (isset($config['slave'])) {
$slave = array_merge($conf, $config['slave']);
} else {
$slave = $conf;
}
$dsn = self::makeDsn($master);
$dsn_s = self::makeDsn($slave);
$config = compact('dsn', 'dsn_s', 'username', 'password');
self::$config = $config;
}
