The ReflectionType class

(PHP 7, PHP 8)

Introduction

The ReflectionType class reports information about a function's parameter/return type or a class's property type. The Reflection extension declares the following subtypes:

ReflectionNamedType (as of PHP 7.1.0)
ReflectionUnionType (as of PHP 8.0.0)
ReflectionIntersectionType (as of PHP 8.1.0)

Class synopsis

abstract class ReflectionType implements Stringable {

/* Methods */

public allowsNull(): bool

public __toString(): string

}

Changelog

Version	Description
8.0.0	ReflectionType has become abstract and ReflectionType::isBuiltin() has been moved to ReflectionNamedType::isBuiltin().

ReflectionType::allowsNull — Checks if null is allowed
ReflectionType::__toString — To string

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User Contributed Notes 2 notes

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1franck ¶

5 years ago

For those who stumble on notice about ReflectionType::__toString() beeing deprecated, use method ReflectionNamedType::getName() instead which is not yet documented.

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Ondej Mirtes ¶

4 years ago

Method ReflectionType::getName() does not exist. This may have been virtually true in the past but not anymore. It exists on ReflectionNamedType which used to be the only child class of ReflectionType. So you could have kind of relied on that.

But in PHP 8 there's also ReflectionUnionType which doesn't have the getName() method. So in order to support PHP 8, you need to support both ReflectionNamedType and ReflectionUnionType.