 <?php
 
$host = "localhost";
$databaseName = "myDatabaseName";
$username = "myUsername";
$password = "myPassword";
 
$dsn = "mysql:host=$host;dbname=$databaseName";
 
try {
    $databaseConnection = new PDO($dsn, $username, $password);
    echo "Connection successful.";
} catch (PDOException $error) {
    echo "Connection failed: " . $error;  
}

	<?php

	$host = "localhost";
	$databaseName = "myDatabaseName";
	$username = "myUsername";
	$password = "myPassword";

	$dsn = "mysql:host=$host;dbname=$databaseName";

	try {
	$databaseConnection = new PDO($dsn, $username, $password);
	echo "Connection successful.";
	} catch (PDOException $error) {
	echo "Connection failed: " . $error;
	}