The PHP Data Objects (PDO) extension defines a lightweight, consistent interface for accessing databases in PHP. It is a data-access abstraction layer, so no matter what database we use the function to issue queries and fetch data will be same. Product Ads
are being used by 61% of the businesses, as it not only increase your brand/product awareness and show greater return on investment. Using PDO drivers we can connect to database like DB2, Oracle, PostgreSQL etc.