Yii Array Helper

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3.1.0 2024-04-04 11:07 UTC



Yii Arrays

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The package provides:

  • ArrayHelper that has static methods to work with arrays;
  • ArraySorter that has static methods for sort arrays;
  • ArrayAccessTrait provides the implementation for \IteratorAggregate, \ArrayAccess and \Countable;
  • ArrayableInterface and ArrayableTrait for use in classes who want to support customizable representation of their instances.


  • PHP 8.0 or higher.


composer require yiisoft/arrays

ArrayHelper usage

Array helper methods are static so usage is like the following:

$username = \Yiisoft\Arrays\ArrayHelper::getValue($_POST, 'username');

Overall the helper has the following method groups.

Getting data

  • getValue
  • getValueByPath
  • getColumn
  • getObjectVars

Setting data

  • addValue
  • addValueByPath
  • setValue
  • setValueByPath

Removing data

  • remove
  • removeByPath
  • removeValue

Detecting array types

  • isIndexed
  • isAssociative

HTML encoding and decoding values

  • htmlDecode
  • htmlEncode

Testing against arrays

  • isIn
  • isSubset


  • index
  • group
  • filter
  • map
  • merge
  • parametrizedMerge
  • renameKey
  • toArray


  • keyExists
  • pathExists

ArraySorter usage

Array sorter has one static method which usage is like the following:

\Yiisoft\Arrays\ArraySorter::multisort($data, ['age', 'name'], [SORT_ASC, SORT_DESC]);

ArrayAccessTrait usage

ArrayAccessTrait provides the implementation for \IteratorAggregate, \ArrayAccess and \Countable.

Note that ArrayAccessTrait requires the class using it contain a property named data which should be an array. The data will be exposed by ArrayAccessTrait to support accessing the class object like an array.

Example of use:

use \Yiisoft\Arrays\ArrayAccessTrait;

class OfficeClassification implements \IteratorAggregate, \ArrayAccess, \Countable
    use ArrayAccessTrait;

    public array $data = [
        'a' => 'Class A',
        'b' => 'Class B',
        'c' => 'Class C',

$classification = new OfficeClassification();

echo 'Count classes: ' . $classification->count() . "\n"; // 3

$iterator = $classification->getIterator();
while ($iterator->valid()) {
    echo $iterator->current() . "\n"; // Class A, Class B, Class C

ArrayableInterface and ArrayableTrait usage

ArrayableInterface and its implementation ArrayableTrait intended for use in classes who want to support customizable representation of their instances.

Example of use:

use \Yiisoft\Arrays\ArrayableTrait;
use \Yiisoft\Arrays\ArrayableInterface;

class Car implements ArrayableInterface
    use ArrayableTrait;

    public string $type = 'Crossover';
    public string $color = 'Red';
    public int $torque = 472;

$car = new Car();

$data = $car->toArray(['type', 'color']); // ['type' => 'Crossover', 'color' => 'Red']


Unit testing

The package is tested with PHPUnit. To run tests:


Mutation testing

The package tests are checked with Infection mutation framework with Infection Static Analysis Plugin. To run it:


Static analysis

The code is statically analyzed with Psalm. To run static analysis:



The Yii Arrays is free software. It is released under the terms of the BSD License. Please see LICENSE for more information.

Maintained by Yii Software.

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