array_partition

Version: 1.1.3

Adds function c2c_array_partition() to split an array into N number of evenly distributed partitions (useful for splitting a list into

Author:	Scott Reilly (profile at wordpress.org)
WordPress version required:	1.2
WordPress version tested:	6.8
Plugin version:	1.3.5
Added to WordPress repository:	11-06-2009
Last updated:	16-04-2025
Rating, %:	0
Rated by:	0
Plugin URI:	https://coffee2code.com/wp-plugins/array-part...
Total downloads:	4 331
Active installs:	10+
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This plugin provides the PHP function c2c_array_partition() to split an array into any number of sub-arrays, suitable for creating evenly distributed, vertically filled “columns”. Also known as “chunking” or “partitioning”.

For example:

$topics = array( "aardvark", "bear", "cat", "dog", "emu", "fox", "gnu", "hippo", "ibis", "jackal" );
print_r( c2c_array_partition( $topics, 4 ) );

Yields:

Array
(
    [0] => Array
        (
            [0] => ant
            [1] => bear
            [2] => cat
        )

    [1] => Array
        (
            [0] => dog
            [1] => emu
            [2] => fox
        )

    [2] => Array
        (
            [0] => gnu
            [1] => hippo
        )

    [3] => Array
        (
            [0] => ibis
            [1] => jackal
        )
)

Note the array elements are distributed into the requested 4 “columns” as evenly as possible.

The function will fill as many partitions as requested, as long as there are enough elements in the array to do so. Any remaining unfilled partitions will be represented as empty arrays.

In contrast, using PHP’s built-in array_chunk() as such:

print_r( array_chunk( $topics, 4 ) );

Yields:

Array
(
    [0] => Array
        (
            [0] => aardvark
            [1] => bear
            [2] => cat
            [3] => dog
        )
    [1] => Array
        (
            [0] => emu
            [1] => fox
            [2] => gnu
            [3] => hippo
        )
    [2] => Array
        (
            [0] => ibis
            [1] => jackal
        )
)

It can be sent an array of any data types or objects.

Links: Plugin Homepage | Plugin Directory Page | GitHub | Author Homepage

Examples

<?php
  $topics = array( "ant", "bear", "cat" );
  print_r( c2c_array_partition( $topics, 5 ) );
?>

=>

Array
(
    [0] => Array
        (
            [0] => ant
        )

    [1] => Array
        (
            [0] => bear
        )

    [2] => Array
        (
            [0] => cat
        )

    [3] => Array
        (
        )

    [4] => Array
        (
        )
)

Also see Description section for another example. Definitely check out the packaged unit test file as it contains various examples.

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