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    ReflectionUnionType::getTypes

    (PHP 8)

    ReflectionUnionType::getTypes — union 型に含まれる型を返す。

    説明

    public ReflectionUnionType::getTypes(): array

    union 型に含まれるリフレクションの型を返します。

    パラメータ

    この関数にはパラメータはありません。

    戻り値

    ReflectionType オブジェクトの配列を返します。

    例

    例1 ReflectionUnionType::getTypes() の例

    <?php
    function someFunction(int|float $number) {}

    $reflectionFunc = new ReflectionFunction('someFunction');
    $reflectionParam = $reflectionFunc->getParameters()[0];

    var_dump($reflectionParam->getType()->getTypes());

    上の例の出力は、 たとえば以下のようになります。

    array(2) {
    [0] =>
    class ReflectionNamedType#4(0) {
    }
    [1] =>
    class ReflectionNamedType#5(0) {
    }
}

    参考

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    User Contributed Notes 2 notes

    up
    3
    baptiste at pillot dot fr
    1 year ago
    Sorting :

    Contrary to what one might expect, the returned array of ReflectionType objects will not be sorted in the same order than the types declared into the source code.

    - Classes, interfaces, traits, iterable (replaced by Traversable), ReflectionIntersectionType objects, parent and self: these types will be returned first, in the order in which they were declared.
    - static and all built-in types (iterable replaced by array) will come next. They will always be returned in this order: static, callable, array, string, int, float, bool (or false or true), null.

    Notice that when used into an union type, iterable is an alias for Traversable|array. ReflectionUnionType::getTypes will return these both ReflectionNamedType objects, instead of a single one named 'iterable'.

    Example :
    <?php
    class PC {}
    class     C extends PC {
    function     f(): null|bool|float|int|parent|PC|string|iterable|(ReflectionClass&ReflectionProperty)|callable|static|self|C {}
    }
    echo     join(', ', array_map(
    function(    $t) { return ($t instanceof ReflectionIntersectionType) ? '<intersection>' : $t->getName(); },
    (new     ReflectionMethod('C', 'f'))->getReturnType()->getTypes()
    )) .     "\n";
    ?>

    Will display :
    parent, PC, Traversable, <intersection>, self, C, static, callable, array, string, int, float, bool, null

    Try it: https://onlinephp.io/c/777c6
    up
    0
    baptiste at pillot dot fr
    1 year ago
    ReflectionUnionType::getTypes can return an array of ReflectionNamedType and/or ReflectionIntersectionType objects only.
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