Are there any best practices or guidelines for efficiently working with multidimensional arrays in PHP?

Working efficiently with multidimensional arrays in PHP can be achieved by using built-in functions like array_map, array_reduce, and array_filter. These functions can help manipulate and iterate over multidimensional arrays without the need for nested loops, resulting in cleaner and more concise code.

// Example of using array_map to manipulate a multidimensional array
$numbers = [[1, 2, 3], [4, 5, 6], [7, 8, 9]];

$multipliedNumbers = array_map(function($subArray) {
    return array_map(function($num) {
        return $num * 2;
    }, $subArray);
}, $numbers);

print_r($multipliedNumbers);