PHP - Manual: ReflectionType::allowsNull
2024-12-24
(PHP 7, PHP 8)
ReflectionType::allowsNull — Checks if null is allowed
Checks whether the parameter allows null
.
此函数没有参数。
true
if null
is allowed, otherwise false
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());
以上例程会输出:
bool(false) bool(true)
官方地址:https://www.php.net/manual/en/reflectiontype.allowsnull.php