/**
* Set the Return Date Format used by functions that return a date/time (Excel, PHP Serialized Numeric or PHP Object)
*
* @access public
* @category Function Configuration
* @param string $returnDateType Return Date Format
* Permitted values are:
* PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC 'P'
* PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT 'O'
* PHPExcel_Calculation_Functions::RETURNDATE_EXCEL 'E'
* @return boolean Success or failure
*/
public static function setReturnDateType($returnDateType)
{
if ($returnDateType == self::RETURNDATE_PHP_NUMERIC || $returnDateType == self::RETURNDATE_PHP_OBJECT || $returnDateType == self::RETURNDATE_EXCEL) {
self::$returnDateType = $returnDateType;
return true;
}
return false;
}
