(PHP 7)
ReflectionParameter::getType — Gets a parameter's type
Gets the associated type of a parameter.
此函数没有参数。
Returns a ReflectionType object if a parameter type is
specified, NULL otherwise.
Example #1 ReflectionParameter::getType() example
<?php
function someFunction(int $param, $param2) {}
$reflectionFunc = new ReflectionFunction('someFunction');
$reflectionParams = $reflectionFunc->getParameters();
$reflectionType1 = $reflectionParams[0]->getType();
$reflectionType2 = $reflectionParams[1]->getType();
echo $reflectionType1;
var_dump($reflectionType2);
以上例程的输出类似于：
int null