CWebDavExtLinks::getHashLink

static function getHashLink($arParams, $options, $userId = null)
{
	$o = array_merge(
		array_intersect_key($arParams, array(
			 'IBLOCK_TYPE' => true,
			 'IBLOCK_ID' => true,
			 'FOLDER' => true,
			 'ROOT_SECTION_ID' => true
		)),
		array_intersect_key($options, array(
			'PASSWORD' => true,
			'URL' => true,
			'BASE_URL' => true,
			'F_SIZE' => true,
			'DESCRIPTION' => true,
			'LIFETIME_TYPE' => true,
			'LIFETIME_NUMBER' => true,
			'SINGLE_SESSION' => true,
			'LINK_TYPE' => true,
			'VERSION_ID' => true,
			'FILE_ID' => true,
			'ELEMENT_ID' => true,
		)),
		array(
			'USER_ID' => self::getUserID($userId),
			'LIFETIME' => self::getLifeTime($options),
		));

	$fileName = str_replace(' ', '_', getFileName($o['URL']));
	if(mb_strlen($fileName) > 25)
	{
		$fileName = mb_substr($fileName, 0, 25).'...';
	}
	$fileName = CWebDavTools::urlEncode($fileName);
	$hash = self::AddExtLink($o);

	return $hash != false? self::getFullExternalURL() . $hash . '/' . $fileName: false;
}