public static function init($apiKey = null)
{
if (is_null(self::$instance)) {
if (!defined('_DEF_LOGRIVER_API_KEY')) {
define('_DEF_LOGRIVER_API_KEY', $apiKey);
require dirname(__FILE__) . '/Global.php';
// __DIR__ appears only in Php 5.3
}
if ($apiKey === null) {
throw new Exception("apiKey parameter is required");
} elseif (!is_string($apiKey) || is_string($apiKey) && strlen($apiKey) !== 32) {
throw new Exception("apiKey parameter is not correct");
}
self::$instance = new self($apiKey);
}
return self::$instance;
}
