It is mandatory to establish database connection when you are working on a dynamic application. Create a db.class.php file at the root and write a class with functions (connect, getOne, getAll etc. In newer versions of PHP mysqli functions are recommended to connect, retrieve or save data to database. In this tutorial, learn how to use MySQLi Extension and PHP Data Objects to connect to MySQL.Traditional legacy mysql_ functions are deprecated and we will not cover them in this guide. I use this database connection system for this website. Prepared Statements protect MySQLi extension basic examples. broken until PHP 5.2.9 and 5.3.0. It is a MySQL-exclusive extension that adds new features to a MySQL database’s interface.MySQLi is both procedural and object-oriented, with the former being the attribute inherited from the older version of MySQL. If the connection establishes it returns “Database connected successfully” otherwise returns connection error. Both are object oriented but MySQLi also offeres procedural API. extension was deprecated in 2012. We need to declare this code into PHP script. The below code is used to create a MySQL database connection in PHP. Syntax: PHP Data Objects (PDO) way. Its very easy to create a new MySQL database. to use another database, PDO makes the process easy. Every PHP process is using its own mysqli connection pool. In newer versions of PHP mysqli functions are recommended to connect, retrieve or save data to database. This is a best and standard way that you are creating a PHP file for the connection. Next, create config.php that will be used to set up the connection between the PHP app and the database. Required fields are marked *. $mysqli = new mysqli ("localhost","my_user","my_password","my_db"); // Check connection. Here we have the example for establish connection by PDO. Before connecting to a MySQL database, you have to specify the following information: MySQL data source name or DSN: specifies the address of the MySQL database server.You can use IP address or server name e.g., or localhost MySQL database name: indicates the name of the database … Please be sure to answer the question.Provide details and share your research! 22–23. PHP provides mysql_connect function to open a database connection. Both MySQLi and PDO have their advantages: PDO will work on 12 different database systems, whereas MySQLi will only Example - Object Oriented style. You only have If the database connected successfully returns the “Database Connected successfully” message otherwise gives a connection error.