ReflectionType::allowsNull

(PHP 7, PHP 8)

ReflectionType::allowsNull — Checks if null is allowed

Descrizione

public ReflectionType::allowsNull(): bool

Checks whether the parameter allows null.

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

true if null is allowed, otherwise false

Esempi

Example #1 ReflectionType::allowsNull() example

<?php
function someFunction(string $param, stdClass $param2 = null) {}

$reflectionFunc = new ReflectionFunction('someFunction');
$reflectionParams = $reflectionFunc->getParameters();

var_dump($reflectionParams[0]->getType()->allowsNull());
var_dump($reflectionParams[1]->getType()->allowsNull());

Il precedente esempio visualizzerà:

bool(false)
bool(true)

Vedere anche:

ReflectionNamedType::isBuiltin() - Checks if it is a built-in type
ReflectionType::__toString() - To string
ReflectionParameter::getType() - Gets a parameter's type

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