bool PDO::setAttribute ( int attribute, mixed value )
Sets an attribute on the database handle. Some of the available generic
attributes are listed below; some drivers may make use of
additional driver specific attributes.
PDO::ATTR_CASE: Force column names to a specific case.
PDO::CASE_LOWER: Force column names to lower case.
PDO::CASE_NATURAL: Leave column names as returned by
the database driver.
PDO::CASE_UPPER: Force column names to upper case.
PDO::ATTR_ORACLE_NULLS
(available with all drivers, not just Oracle):
Conversion of NULL and empty strings.
PDO::NULL_NATURAL:
No conversion.
PDO::NULL_EMPTY_STRING:
Empty string is converted to NULL.
PDO::NULL_TO_STRING:
NULL is converted to an empty string.
PDO::ATTR_STRINGIFY_FETCHES:
Convert numeric values to strings when fetching.
Requires bool.
PDO::ATTR_STATEMENT_CLASS:
Set user-supplied statement class derived from PDOStatement.
Cannot be used with persistent PDO instances.
Requires array(string classname, array(mixed ctor_args)).
PDO::ATTR_AUTOCOMMIT
(available in OCI, Firebird and MySQL):
Whether to autocommit every single statement.
PDO::MYSQL_ATTR_USE_BUFFERED_QUERY
(available in MySQL):
Use buffered queries.