This connection attribute controls the format of strings for datetime
types. When this is false, PDO_DBLIB will return a datetime type as a
string in the format that SQL Server returns it in (i.e.
"2017-10-27 10:22:44"). When true, PDO_DBLIB will
convert the datetime type into a string using a user-defined or locale
format, as specified in the FreeTDS locales.conf
file. By default, this attribute is false.