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ReflectionParameter::getType

(PHP 7, PHP 8)

ReflectionParameter::getType — Gets a parameter's type

Açıklama

public ReflectionParameter::getType(): ?ReflectionType

Gets the associated type of a parameter.

Bağımsız Değişkenler

Bu işlevin bağımsız değişkeni yoktur.

Dönen Değerler

Returns a ReflectionType object if a parameter type is specified, null otherwise.

Örnekler

Örnek 1 ReflectionParameter::getType() Usage as of PHP 7.1.0

As of PHP 7.1.0, ReflectionType::__toString() is deprecated, and ReflectionParameter::getType() may return an instance of ReflectionNamedType. To get the name of the parameter type, ReflectionNamedType() is available in this case.

<?php
function someFunction(int $param, $param2) {}

$reflectionFunc = new ReflectionFunction('someFunction');
$reflectionParams = $reflectionFunc->getParameters();
$reflectionType1 = $reflectionParams[0]->getType();
$reflectionType2 = $reflectionParams[1]->getType();

assert($reflectionType1 instanceof ReflectionNamedType);
echo $reflectionType1->getName(), PHP_EOL;
var_dump($reflectionType2);
?>

Yukarıdaki örneğin çıktısı:

int
NULL

Örnek 2 ReflectionParameter::getType() Usage before PHP 7.1.0

<?php
function someFunction(int $param, $param2) {}

$reflectionFunc = new ReflectionFunction('someFunction');
$reflectionParams = $reflectionFunc->getParameters();
$reflectionType1 = $reflectionParams[0]->getType();
$reflectionType2 = $reflectionParams[1]->getType();

echo $reflectionType1, PHP_EOL;
var_dump($reflectionType2);
?>

Yukarıdaki örneğin PHP 7.0 çıktısı:

int
NULL

Örnek 3 ReflectionParameter::getType() Usage in PHP 8.0.0 and later

As of PHP 8.0.0, this method may return a ReflectionNamedType instance or a ReflectionUnionType instance. The latter is a collection of the former. To analyze a type, it is often convenient to normalize it to an array of ReflectionNamedType objects. The following function will return an array of 0 or more ReflectionNamedType instances.

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

if (!$reflectionType) return [];

return $reflectionType instanceof ReflectionUnionType
? $reflectionType->getTypes()
: [$reflectionType];
}
?>

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