ReflectionParameter::isArray

Checks if parameter expects an array

&warn.deprecated.function-8-0-0;

See the example below for an alternative way to derive this information.

&reftitle.description; #[\Deprecated] public `bool` `ReflectionParameter::isArray`

Checks if the parameter expects an array.

&reftitle.parameters; &no.function.parameters;
&reftitle.returnvalues;

&true; if an `array` is expected, &false; otherwise.

&reftitle.changelog;

&Version; | &Description;
8.0.0 | This function has been deprecated in favor of `ReflectionParameter::getType` instead.

&reftitle.examples;

### PHP 8.0.0 equivalent

As of PHP 8.0.0, the following code will report if a type declares arrays, including as part of a union.

    <?php
    function declaresArray(ReflectionParameter $reflectionParameter): bool
    {
        $reflectionType = $reflectionParameter->getType();

        if (!$reflectionType) return false;

        $types = $reflectionType instanceof ReflectionUnionType
            ? $reflectionType->getTypes()
            : [$reflectionType];

       return in_array('array', array_map(fn(ReflectionNamedType $t) => $t->getName(), $types));
    }
    ?>

&reftitle.seealso;

- `ReflectionParameter::isOptional`