(PHP 7)
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
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());
以上例程的输出类似于:
bool(false) bool(true)