/**
* Returns a PHP_CompatInfo configuration object
*
* @param string $filename The configuration file name
*
* @return PHP_CompatInfo_Configuration
* @throws PHP_CompatInfo_Exception
*/
public static function getInstance($filename)
{
$realpath = realpath($filename);
if ($realpath === false) {
throw new PHP_CompatInfo_Exception(sprintf('Could not read "%s".', $filename));
}
if (!isset(self::$instance)) {
self::$instance = new PHP_CompatInfo_Configuration($realpath);
}
return self::$instance;
}
