ReflectionType::__toString

(PHP 7, PHP 8)

ReflectionType::__toString — To string

Descrizione

public ReflectionType::__toString(): string

Gets the parameter type name.

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

Returns the type of the parameter.

Log delle modifiche

Versione	Descrizione
8.0.0	ReflectionType::__toString() has been undeprecated.
7.1.0	ReflectionType::__toString() has been deprecated.

Esempi

Example #1 ReflectionType::__toString() example

<?php
function someFunction(string $param) {}

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

echo $reflectionParam->getType();

Il precedente esempio visualizzerà qualcosa simile a:

string

Vedere anche:

ReflectionNamedType::getName() - Get the name of the type as a string
ReflectionNamedType::isBuiltin() - Checks if it is a built-in type
ReflectionType::allowsNull() - Checks if null is allowed
ReflectionUnionType::getTypes() - Returns the types included in the union type
ReflectionParameter::getType() - Gets a parameter's type

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User Contributed Notes 1 note

down

Anonymous ¶

4 years ago

Regarding this method's deprecation:

ReflectionType::__toString() was first deprecated in PHP 7.1.0 alpha1.
The deprecation notice was removed in PHP 7.1.0 RC3, before being reinstated in PHP 7.4.0 alpha1.

Starting with PHP 7.1.0 beta 3, ReflectionParameter::getType() & ReflectionFunctionAbstract::getReturnType() return instances of ReflectionNamedType instead of ReflectionType.
The ReflectionNamedType class inherits from ReflectionType but provides an additional getName() method which can be used to retrieve the type hint.

Lastly, PHP 8.0.0 alpha1 introduced the concept of union types (see https://wiki.php.net/rfc/union_types_v2). As a result, ReflectionParameter::getType() & ReflectionFunctionAbstract::getReturnType() will now return either instances of ReflectionNamedType or ReflectionUnionType depending on the type hint, both of which are descendants of ReflectionType.

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