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<ReflectionParameter::hasTypeReflectionParameter::isCallable>
^ReflectionParameterLast updated: Mon, 26 Oct 2026

ReflectionParameter::isArray

(PHP 5 >= 5.1.2, PHP 7, PHP 8)

ReflectionParameter::isArray — Checks if parameter expects an array

Warning

This function has been DEPRECATED as of PHP 8.0.0. Relying on this function is highly discouraged.

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

Description

#[\Deprecated(
    since: '8.0',
    message: "use ReflectionParameter::getType() instead",
)]
public function ReflectionParameter::isArray(): bool

Checks if the parameter expects an array.

Parameters

This function has no parameters.

Return Values

true if an array is expected, false otherwise.

Changelog

Version Description
8.0.0 This function has been deprecated in favor of ReflectionParameter::getType() instead.

Examples

Example #1 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));
}
?>

See Also


<ReflectionParameter::hasTypeReflectionParameter::isCallable>
^ReflectionParameterLast updated: Mon, 26 Oct 2026