在PHP中将变量包含到类中

I'am trying to write a function that includes any variable into a classs. For example:

My function: add_action($VARS_ARRAY);

This function should include $VARS_ARRAY into A class.

How can I do it in PHP?

you don't need a function for this, you can just add a value directly.

$a = new A();
$a->vars_array = $VARS_ARRAY;