core-bundle/src/Resources/contao/classes/Backend.php
public static function convertLayoutSectionIdsToAssociativeArray($arrSections)
	{
		$arrSections = array_flip(array_values(array_unique($arrSections)));

		foreach (array_keys($arrSections) as $k)
		{
			$arrSections[$k] = $GLOBALS['TL_LANG']['COLS'][$k];
		}

		asort($arrSections);

		return $arrSections;
	}
public static function convertLayoutSectionIdsToAssociativeArray($arrSections)
	{
		$arrSections = array_flip(array_values(array_unique($arrSections)));

		foreach (array_keys($arrSections) as $k)
		{
			$arrSections[$k] = $GLOBALS['TL_LANG']['COLS'][$k];
		}

		asort($arrSections);

		return $arrSections;
	}
Convert an array of layout section IDs to an associative array with IDs and labels

@param array $arrSections

@return array