How can the use of arrays improve the processing and comparison of CSV data in PHP?

When processing and comparing CSV data in PHP, using arrays can greatly improve efficiency and readability. By storing the CSV data in arrays, you can easily access and manipulate the data using array functions and loops. This makes it simpler to compare values between different rows or columns in the CSV file.

<?php

// Read CSV file into an array
$csvData = array_map('str_getcsv', file('data.csv'));

// Loop through the CSV data and perform comparisons
foreach ($csvData as $row) {
    // Perform comparisons or data processing here
}

?>