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    ReflectionParameter::getAttributes

    (PHP 8)

    ReflectionParameter::getAttributes — Gets Attributes

    Descripción

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

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

    Parámetros

    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.

    Valores devueltos

    Array of attributes, as a ReflectionAttribute object.

    Ejemplos

    Ejemplo #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));
    ?>

    El resultado del ejemplo sería:

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

    Ejemplo #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));
    ?>

    El resultado del ejemplo sería:

    Array
(
    [0] => Fruit
)

    Ejemplo #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));
    ?>

    El resultado del ejemplo sería:

    Array
(
    [0] => Red
)

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