core-bundle/src/Resources/contao/models/FilesModel.php
public static function findMultipleFoldersByFolder($strPath, array $arrOptions=array())
	{
		$t = static::$strTable;
		$strPath = str_replace(array('\\', '%', '_'), array('\\\\', '\\%', '\\_'), $strPath);

		return static::findBy(array("$t.type='folder' AND $t.path LIKE ? AND $t.path NOT LIKE ?"), array($strPath.'/%', $strPath.'/%/%'), $arrOptions);
	}
public static function findMultipleFoldersByFolder($strPath, array $arrOptions=array())
	{
		$t = static::$strTable;
		$strPath = str_replace(array('\\', '%', '_'), array('\\\\', '\\%', '\\_'), $strPath);

		return static::findBy(array("$t.type='folder' AND $t.path LIKE ? AND $t.path NOT LIKE ?"), array($strPath.'/%', $strPath.'/%/%'), $arrOptions);
	}
Find all folders in a folder

@param string $strPath    The folder path
@param array  $arrOptions An optional options array

@return Collection|FilesModel[]|FilesModel|null A collection of models or null if there are no matching folders