The Power of PHP's array_chunk Function

The PHP programming language has a vast collection of built-in functions, each designed to make developers' lives easier. One such function is array_chunk, a powerful tool for dividing arrays into smaller, manageable chunks.

What is the array_chunk Function?

The array_chunk function is a PHP function that splits an array into smaller arrays, each containing a specified number of elements. This function is incredibly useful when dealing with large arrays, as it allows developers to easily break down complex data structures into smaller, more manageable parts.

How does array_chunk Work?

The array_chunk function takes two arguments: the first is the array to be chunked, and the second is the number of elements each chunk should contain. The function then returns an array of arrays, each containing the specified number of elements from the original array.

For example, consider the following array:


$original_array = array("a", "b", "c", "d", "e", "f", "g");
$result = array_chunk($original_array, 3);



If we call array_chunk on this array, passing in a value of 3 for the second argument, we would get the following result:

    [0] => Array
            [0] => a
            [1] => b
            [2] => c

    [1] => Array
            [0] => d
            [1] => e
            [2] => f

    [2] => Array
            [0] => g

As you can see, the original array has been divided into three smaller arrays, each containing three elements (with the exception of the final array, which contains only one).

Why Use array_chunk?

The array_chunk function is incredibly useful for a variety of applications, including:

  • Breaking down large arrays into smaller, more manageable parts for processing.
  • Displaying large amounts of data in a paginated manner (e.g. splitting an array of results into smaller arrays for display on multiple pages).
  • Improving the performance of algorithms that operate on arrays by reducing the size of arrays being processed at any given time.

Example Use Case: Pagination

One of the most common use cases for the array_chunk function is pagination. Consider the following example, where we have an array of 100 results that we want to display on 10 pages:


$results = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12);
$results_per_page = 10;
$pages = array_chunk($results, $results_per_page);


The array_chunk function would then divide our array of 100 results into 10 smaller arrays, each containing 10 elements. These smaller arrays could then be easily displayed on separate pages, allowing for efficient and user-friendly pagination of large amounts of data.


The array_chunk function is a powerful tool in the PHP programmer's toolkit, providing a simple and effective way to divide large arrays into smaller, more manageable parts. Whether you're dealing with pagination, large data sets, or simply need to improve the performance of your algorithms, array_chunk is a function

Practice Your Knowledge

Which of the following statements about the array_chunk function in PHP are correct?

Quiz Time: Test Your Skills!

Ready to challenge what you've learned? Dive into our interactive quizzes for a deeper understanding and a fun way to reinforce your knowledge.

Do you find this helpful?