What are the best practices for managing large arrays in PHP source code, particularly when only specific elements of the array need to be accessed at a time?

When dealing with large arrays in PHP where only specific elements need to be accessed at a time, it is best to use lazy loading techniques to avoid loading the entire array into memory unnecessarily. One approach is to use generators to only load elements as needed, reducing memory usage and improving performance.

// Example of lazy loading large array using generators
function lazyLoadArray($array) {
    foreach ($array as $element) {
        yield $element;
    }
}

$largeArray = range(1, 1000000); // Example large array
$generator = lazyLoadArray($largeArray);

foreach ($generator as $element) {
    // Access elements one at a time without loading the entire array into memory
    echo $element . "\n";
}