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ReflectionType::allowsNull

(PHP 7, PHP 8)

ReflectionType::allowsNullChecks 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

范例

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());

以上例程会输出:

bool(false)
bool(true)

参见

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