How do arrays in PHP help with grouping similar data and improving code readability?

Arrays in PHP help with grouping similar data by allowing you to store multiple values under a single variable name. This improves code readability by organizing related data into a structured format that is easy to access and manipulate. By using arrays, you can avoid cluttering your code with separate variables for each piece of related data, making your code more concise and easier to understand.

// Example of using arrays to group similar data
$user = [
    'name' => 'John Doe',
    'email' => 'johndoe@example.com',
    'age' => 30,
    'city' => 'New York'
];

// Accessing data from the array
echo 'Name: ' . $user['name'] . '<br>';
echo 'Email: ' . $user['email'] . '<br>';
echo 'Age: ' . $user['age'] . '<br>';
echo 'City: ' . $user['city'] . '<br>';