What is the best way to store and access data from arrays in PHP functions?

When storing and accessing data from arrays in PHP functions, it's best to pass the array as an argument to the function. This allows the function to work with the array without relying on global variables, making the code more modular and easier to test. Inside the function, you can then access the array elements using the array index.

// Define a function that takes an array as an argument
function accessArrayData($array) {
    // Access data from the array using array index
    $value = $array['key'];
    
    // Perform operations with the array data
    return $value;
}

// Define an array
$data = ['key' => 'value'];

// Call the function and pass the array as an argument
$result = accessArrayData($data);

// Output the result
echo $result;