<?php

$items = ['apple', 'banana', 'cherry', 'date', 'elderberry', 'fig', 'grape', 'honeydew', 'kiwi', 'lemon'];
$chunkSize = 3;

// Split the array into chunks of 3 elements
$chunks = array_chunk($items, $chunkSize);
echo "Array split into chunks of $chunkSize:
";
print_r($chunks);
/* Output:
Array
(
    [0] => Array
        (
            [0] => apple
            [1] => banana
            [2] => cherry
        )
    [1] => Array
        (
            [0] => date
            [1] => elderberry
            [2] => fig
        )
    [2] => Array
        (
            [0] => grape
            [1] => honeydew
            [2] => kiwi
        )
    [3] => Array
        (
            [0] => lemon
        )
)
*/

// Splitting with preserve_keys = true (useful for associative arrays)
$associativeItems = [
    'a' => 'Apple',
    'b' => 'Banana',
    'c' => 'Cherry',
    'd' => 'Date',
    'e' => 'Elderberry'
];
$chunkSizeAssociative = 2;

$chunksPreserveKeys = array_chunk($associativeItems, $chunkSizeAssociative, true);
echo "
Associative array split into chunks of $chunkSizeAssociative (preserving keys):
";
print_r($chunksPreserveKeys);
/* Output:
Array
(
    [0] => Array
        (
            [a] => Apple
            [b] => Banana
        )
    [1] => Array
        (
            [c] => Cherry
            [d] => Date
        )
    [2] => Array
        (
            [e] => Elderberry
        )
)
*/

// Common use case: Paginate database results (assuming $allRecords is an array of records)
$allRecords = [
    ['id' => 1, 'name' => 'Record A'],
    ['id' => 2, 'name' => 'Record B'],
    ['id' => 3, 'name' => 'Record C'],
    ['id' => 4, 'name' => 'Record D'],
    ['id' => 5, 'name' => 'Record E'],
];
$recordsPerPage = 2;
$currentPage = 2; // e.g., from $_GET['page']

$paginatedChunks = array_chunk($allRecords, $recordsPerPage);
$recordsForCurrentPage = $paginatedChunks[$currentPage - 1] ?? []; // Subtract 1 for 0-based index

echo "
Records for page $currentPage:
";
print_r($recordsForCurrentPage);
/* Output (for currentPage = 2):
Array
(
    [0] => Array
        (
            [id] => 3
            [name] => Record C
        )
    [1] => Array
        (
            [id] => 4
            [name] => Record D
        )
)
*/

?>