protected static function _parseExtension($url)
{
$ext = null;
if (static::$_parseExtensions) {
if (preg_match('/\\.[0-9a-zA-Z]*$/', $url, $match) === 1) {
$match = substr($match[0], 1);
if (empty(static::$_validExtensions)) {
$url = substr($url, 0, strpos($url, '.' . $match));
$ext = $match;
} else {
foreach (static::$_validExtensions as $name) {
if (strcasecmp($name, $match) === 0) {
$url = substr($url, 0, strpos($url, '.' . $name));
$ext = $match;
break;
}
}
}
}
}
return compact('ext', 'url');
}