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om/from-array
=============

fromArray trait allow create objects instances loaded with initial data array

v2.1.0(2mo ago)712.3k↓40%51BSD-3-ClausePHPPHP >=8.1CI passing

Since Oct 27Pushed 2mo ago2 watchersCompare

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`FromArray` Data Loader Trait
=============================

[](#fromarray-data-loader-trait)

`FromArray` is a lightweight PHP trait that enables effortless object hydration from associative arrays. It is especially useful in scenarios where data needs to be mapped into strongly-typed objects, such as when working with APIs, form inputs, or configuration data.

With support for PHP attributes, `FromArray` lets you fine-tune how each property is loaded, define type expectations, and apply custom transformation logic — all while keeping your code clean and expressive.

Install
-------

[](#install)

```
composer require om/from-array
```

Usage
-----

[](#usage)

The `FromArray` trait enables the creation of object instances preloaded with an initial data array:

```
class Example {
  use FromArray;
  public string $a;
  public string $b;
  public string $c;
}

$example = Example::fromArray(
  [
    'a' => 'value of A',
    'b' => 'value of B',
    'c' => 'value of C',
  ],
);

echo json_encode($example, JSON_PRETTY_PRINT);
```

Result:

```
{
  "a": "value of A",
  "b": "value of B",
  "c": "value of C"
}
```

The trait **works with public properties only** — private and protected properties will be ignored.

Attributes
----------

[](#attributes)

There are several [PHP Attributes](https://www.php.net/manual/en/language.attributes.overview.php) to configure the `fromArray` behavior:

### `Property`

[](#property)

The `Property` attribute allows you to map a specific key (`from`) from the data array to the property:

```
class Example
{
    use FromArray;

    #[Property(from: '_id')]
    public int $id;
}

$example = Example::fromArray(['_id' => 123]);
assert($example->id === 123);
```

You can also customize the `loader` used to transform the data:

```
function addPrefix(mixed $value) {
    return 'PREFIX_' . $value;
}

class Example
{
    use FromArray;

    #[Property(loader: 'addPrefix')]
    public string $name;
}

$example = Example::fromArray(['name' => 'name']);
assert($example->name === 'PREFIX_name');
```

Loader can be the **name of a class**, an **object**, or any type of **callable**.

For more see [basic-example.php](/examples/basic-example.php).

### `Loader`

[](#loader)

The `Loader` attribute allows you to define a value loader for the entire class or for individual properties:

```
use DataLoader\Loader;
use DataLoader\Property;

class MyLoader {
    public function __invoke($value, Property $property) {
        return match ($property->name) {
            'id' => (int) $value,
            'names' => explode(',', $value),
            default => $value,
        };
    }
}

#[Loader(MyLoader::class)]
class Example
{
    use FromArray;
    public mixed $id = null;
    public array $names = [];
    public string $other = '';
}

$example = Example::fromArray([
    'id' => '123',
    'names' => 'John,Doe,Smith',
    'other' => 'value',
]);
```

For more see [loader-class.php](/examples/loader-class.php) or [loader-property.php](/examples/loader-property.php).

### `Type`

[](#type)

The `Type` attribute allows you to define a specific type for the property. Types are usually auto-detected, but you can force the type using the `Type` attribute:

```
class Example
{
    use FromArray;

    #[Type(name: Types::Int, allowNull: true)]
    public mixed $id;
}
```

There is one special case — you can specify `Types::ArrayOfObjects` to load an array of objects of the same class. The `class` parameter is required in this case:

```
class ExampleObject {
    public function __construct(public ?string $name = null) {}
}

class Example
{
    use FromArray;

    #[Type(name: Types::ArrayOfObjects, class: ExampleObject::class)]
    public array $objects = [];
}

$example = Example::fromArray([
    'objects' => [
        ['name' => 'John'],
        ['name' => 'Doe'],
    ],
]);
```

See [array-of-objects.php](/examples/array-of-objects.php) for more information.

Metadata
--------

[](#metadata)

The [`Metadata`](https://github.com/OzzyCzech/fromArray/blob/main/src/Metadata.php) object contains all the information about the class and its properties. It is a singleton, but you can load an instance from cache:

```
// prepare metadata
$metadata = new Metadata();
$metadata->resolve(Example::class, MyObject::class);
$data = $metadata->getArrayCopy();

// restore singleton data
Metadata::fromCache($data);
```

See [metadata-cache.php](/examples/metadata-cache.php) for more information.

Testing
-------

[](#testing)

```
composer test    # run tests
composer format  # run PHP CS Fixer
```

###  Health Score

56

—

FairBetter than 97% of packages

Maintenance84

Actively maintained with recent releases

Popularity31

Limited adoption so far

Community15

Small or concentrated contributor base

Maturity79

Established project with proven stability

 Bus Factor1

Top contributor holds 92.5% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Every ~281 days

Recently: every ~92 days

Total

12

Last Release

80d ago

Major Versions

v0.0.5 → v1.0.02024-08-01

v1.0.1 → v2.0.02025-04-09

PHP version history (3 changes)v0.0.1PHP >=5.6.0

v1.0.0PHP >=8.0

1.x-devPHP >=8.1

### Community

Maintainers

![](https://www.gravatar.com/avatar/56ca26f8b97f82b2a0b3e32bf121a275be1139f461584b306cc095562ea91e50?d=identicon)[OzzyCzech](/maintainers/OzzyCzech)

---

Top Contributors

[![OzzyCzech](https://avatars.githubusercontent.com/u/105520?v=4)](https://github.com/OzzyCzech "OzzyCzech (62 commits)")[![tarikflz](https://avatars.githubusercontent.com/u/13560943?v=4)](https://github.com/tarikflz "tarikflz (5 commits)")

---

Tags

arrayhydratorphp

###  Code Quality

Code StylePHP CS Fixer

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```

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