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ReflectionParameter::getAttributes

(PHP 8)

ReflectionParameter::getAttributesGets Attributes

Açıklama

public ReflectionParameter::getAttributes(?string $name = null, int $flags = 0): array

Returns all attributes declared on this parameter as an array of ReflectionAttribute.

Bağımsız Değişkenler

name

Filter the results to include only ReflectionAttribute instances for attributes matching this class name.

flags

Flags for determining how to filter the results, if name is provided.

Default is 0 which will only return results for attributes that are of the class name.

The only other option available, is to use ReflectionAttribute::IS_INSTANCEOF, which will instead use instanceof for filtering.

Dönen Değerler

Array of attributes, as a ReflectionAttribute object.

Örnekler

Örnek 1 Basic usage

<?php
#[Attribute]
class Fruit {
}

#[Attribute]
class Red {
}

function
fruitBasket(
#[Fruit]
#[Red]
string $apple
) { }

$reflection = new ReflectionFunction('fruitBasket');
$parameter = $reflection->getParameter('apple');
$attributes = $parameter->getAttributes();
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>

Yukarıdaki örneğin çıktısı:

Array
(
    [0] => Fruit
    [1] => Red
)

Örnek 2 Filtering results by class name

<?php
#[Attribute]
class Fruit {
}

#[Attribute]
class Red {
}

function
fruitBasket(
#[Fruit]
#[Red]
string $apple
) { }

$reflection = new ReflectionFunction('fruitBasket');
$parameter = $reflection->getParameter('apple');
$attributes = $parameter->getAttributes('Fruit');
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>

Yukarıdaki örneğin çıktısı:

Array
(
    [0] => Fruit
)

Örnek 3 Filtering results by class name, with inheritance

<?php
interface Color {
}

#[Attribute]
class Fruit {
}

function
fruitBasket(
#[Fruit]
#[Red]
string $apple
) { }

$reflection = new ReflectionFunction('fruitBasket');
$parameter = $reflection->getParameter('apple');
$attributes = $parameter->getAttributes('Color', ReflectionAttribute::IS_INSTANCEOF);
print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
?>

Yukarıdaki örneğin çıktısı:

Array
(
    [0] => Red
)

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