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    ReflectionFunctionAbstract::getAttributes

    (PHP 8)

    ReflectionFunctionAbstract::getAttributes — Gets Attributes

    Descrizione

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

    Returns all attributes declared on this function or method as an array of ReflectionAttribute.

    Elenco dei parametri

    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.

    Valori restituiti

    Array of attributes, as a ReflectionAttribute object.

    Esempi

    Example #1 Basic usage with a class method

    <?php
    #[Attribute]
    class     Fruit {
    }

    #[    Attribute]
    class     Red {
    }

    class     Factory {
    #[    Fruit]
    #[    Red]
    public function     makeApple(): string
    {
    return     'apple';
    }
    }

    $method = new ReflectionMethod('Factory', 'makeApple');
    $attributes = $method->getAttributes();
    print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
    ?>

    Il precedente esempio visualizzerà:

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

    Example #2 Basic usage with a function

    <?php
    #[Attribute]
    class     Fruit {
    }

    #[    Attribute]
    class     Red {
    }

    #[    Fruit]
    #[    Red]
    function     makeApple(): string
    {
    return     'apple';
    }

    $function = new ReflectionFunction('makeApple');
    $attributes = $function->getAttributes();
    print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
    ?>

    Il precedente esempio visualizzerà:

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

    Example #3 Filtering results by class name

    <?php
    #[Attribute]
    class     Fruit {
    }

    #[    Attribute]
    class     Red {
    }

    #[    Fruit]
    #[    Red]
    function     makeApple(): string
    {
    return     'apple';
    }

    $function = new ReflectionFunction('makeApple');
    $attributes = $function->getAttributes('Fruit');
    print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
    ?>

    Il precedente esempio visualizzerà:

    Array
(
    [0] => Fruit
)

    Example #4 Filtering results by class name, with inheritance

    <?php
    interface Color {
    }

    #[    Attribute]
    class     Fruit {
    }

    #[    Attribute]
    class     Red implements Color {
    }

    #[    Fruit]
    #[    Red]
    function     makeApple(): string
    {
    return     'apple';
    }

    $function = new ReflectionFunction('makeApple');
    $attributes = $function->getAttributes('Color', ReflectionAttribute::IS_INSTANCEOF);
    print_r(array_map(fn($attribute) => $attribute->getName(), $attributes));
    ?>

    Il precedente esempio visualizzerà:

    Array
(
    [0] => Red
)

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