Is it advisable to store data in a PHP file directly, or are there better practices for managing data in PHP applications?

It is not advisable to store data directly in a PHP file as it can lead to security vulnerabilities and make it difficult to manage and update the data. A better practice is to store data in a separate file or database, and then access it using PHP scripts.

// Example of storing data in a separate file
$data = array(
    'name' => 'John Doe',
    'email' => 'john.doe@example.com',
    'age' => 30
);

// Save data to a JSON file
file_put_contents('data.json', json_encode($data));

// Retrieve data from the JSON file
$data = json_decode(file_get_contents('data.json'), true);

// Access the data
echo $data['name']; // Outputs: John Doe