ReflectionType::allowsNull

(PHP 7, PHP 8)

ReflectionType::allowsNull — Checks if null is allowed

说明

public ReflectionType::allowsNull(): bool

Checks whether the parameter allows null.

参数

此函数没有参数。

返回值

true if null is allowed, otherwise false

示例

示例 #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());