How can one ensure that a PHP program accessing a database functions correctly on multiple computers?

To ensure that a PHP program accessing a database functions correctly on multiple computers, you should make sure that the database connection details are configurable and not hardcoded in the code. This way, each computer can have its own database configuration. Additionally, you should ensure that the necessary PHP extensions for database connectivity are installed on all computers where the program will run. 

<?php
// Database configuration
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "mydatabase";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>

Keywords

PHP database cross-platform connectivity error handling

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