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

ReflectionParameter::isArrayChecks if parameter expects an array


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.


public ReflectionParameter::isArray(): bool

Checks if the parameter expects an array.


This function has no parameters.

Return Values

true if an array is expected, false otherwise.


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.

function declaresArray(ReflectionParameter $reflectionParameter): bool
$reflectionType = $reflectionParameter->getType();

if (!
$reflectionType) return false;

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

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

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