How to Connect to MySQL Database in PHP using PDO

In this tutorial, we are going to see how to connect to MySQL database in PHP using PDO. Before creating a connection to a MySQL database server, you must have:

• A MySQL database server installed on your local system or on a remote server.
• A database on MySQL server.
• MySQL account with a username and password to access the database.

In the example below, we will use:

• The local MySQL database server so that the DSN is localhost.
• A database called “test”.
• Root account with an empty password.

 

How to Connect to MySQL Database in PHP using PDO

<?php

    $host = 'localhost';
    $dbname = 'test';
    $username = 'root';
    $password = '';
 
	try {
	
		$conn = new PDO("mysql:host=$host;dbname=$dbname", $username, $password);
		
		echo "Connected to $dbname on $host successfully.";
		
	} catch (PDOException $e) {
	
		die("Unable to connect to the database $dbname :" . $e->getMessage());
		
	}

?>

If you have configured everything correctly, you will see the following message:

Connected to test on localhost successfully.

 
 
If the MySQL driver is not enabled in php.ini file, you will get the following error message:

Unable to load driver

To check if MySQL PDO driver is enabled, you need to open the php.ini file and uncomment the following line by removing the semicolon (;) at the beginning of the entry:

extension=php_pdo_mysql.dll

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