PHP：性能：splat运算符或反射

Question

In an app that I'm creating, I need to pass an unknown number of parameters to an unknown constructor of a class. The class (+ namespace) is a string, that is in $class. The parameters are in an array.

This application will be deployed over a couple of months, so we thought we could develop it already in PHP 5.6. So I thought that the solution of this would be:

$instance = new $class(...$args);

This is working...

But my collegues don't want to accept this, because the CI server does not understand this line of code. Their solution would rather be:

$reflect = new \ReflectionClass($class);
$instance = $reflect->newInstanceArgs($args)

Now: both are working fine, so that's not the problem. But my thought is that Reflection is slower then using other ways (like the PHP 5.6 splat operator).

Also the question: is reflection a good way, of should I use the splat operator from the moment the CI server does understand that line?

Answer 1

Definitely go for the splat operator, why? It's much faster than the reflection approach (I'm using it and the implementation seems to be very good). Also reflection breaks just about anything that has to do with design, it allows you to break encapsulation for instance.

PS: Isn't it $instance = new $class(...$args);?