PDO advantage : 1-Object Oriented 2-Bind parameters in statements (security) 3-Allows for prepared statements and rollback functionality (consistency) 4-Throws catcheable exceptions for better error handling (quality) 5-Exception mode; no need to check error state after each API call. It's best to tell PDO how you'd like the data to be fetched. You have the following options: 1-PDO::FETCH_ASSOC: returns an array indexed by column name. 2-PDO::FETCH_BOTH: (default):returns an array indexed by both column name and number. 3-PDO::FETCH_BOUND:Assigns the values of your columns to the variables set with the ->bindColumn() method. 4-PDO::FETCH_CLASS: Assigns the values of your columns to properties of the named class. It will create the properties if matching properties do not exist. 5-PDO::FETCH_INTO:Updates an existing instance of the named class. 6-PDO::FETCH_LAZY: Combines. 7-PDO::FETCH_BOTH/PDO:FETCH_OBJ, creating the object variable names as t...