I am working on a function that takes a string as an argument, which I need to use to get the value of a variable of the same name.

For example

If the string `$foo = "$_POST['email']";` is passed I need to retrieve the value of `$_POST['email']` and store it as `$example`, so that `$_POST['email'] == $example` would return true. There is no feasable way of passing the value directly to function (the variable has to be dynamic to make the function worthwhile).

I did think of using variable variables but they don't work with super globals which will be the primary source of the values I need.

Basically is there a way to get the value of a variable (usually in a superglobal array) with the needed variable as a string?

Let me know if more detail is needed.

Thanks