What are some best practices for structuring dynamic arrays in PHP for easier manipulation?

When working with dynamic arrays in PHP, it is important to structure them in a way that allows for easy manipulation. One best practice is to use associative arrays with meaningful keys to access and modify specific elements. Additionally, organizing data into nested arrays or multidimensional arrays can help manage complex data structures more effectively.

// Example of using associative arrays for easier manipulation
$student = [
    'name' => 'John Doe',
    'age' => 20,
    'grades' => [90, 85, 95]
];

// Accessing and modifying specific elements
echo $student['name']; // Output: John Doe
$student['age'] = 21;
$student['grades'][] = 88;