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If I have the following class:

class MyClass
{
    public function hello($name)
    {
        echo 'Hello ' . $name;
    }
}

If I use the following code to call the function (the name of the function and parameters are determined based on user input):

$className = 'MyClass';
$func = 'hello';
$params = ['John', 'Another Param'];
$myClass = new $className();

$myClass->$func(...$params);

The function is called and the extra parameter is ignored. What I would like to do, is ensure that the number of parameters in $params matches that of the function and have and throw an ArgumentCountError if the number of arguments do not match.

I have been searching but have not found any solutions. How may I achieve this?

Improve this question
8
  • stackoverflow.com/questions/11480437/… Commented Aug 16, 2021 at 0:20
  • @segFault Thanks. Doing it that way would mean that I would have to do it for every function that I create which would not be the best idea. Commented Aug 16, 2021 at 0:33
  • Does the parameter will always be an array? Commented Aug 16, 2021 at 1:03
  • @MarcioMazzucato Yes because they are determined based on user input so the amount of arguments will not always be the same. Commented Aug 16, 2021 at 1:24
  • So you expect to receive always an array with an undefined number of items? Commented Aug 17, 2021 at 0:03
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