use strings to access (potentially large) multidimensional arrays

Question

I am having trouble figuring out a way to simply parse a string input and find the correct location within a multidimensional array.

I am hoping for one or two lines

Answer 1

For one, you've not got a $var in your get() function. $var was defined outside the function, and PHP scoping rules do not make "higher" vars visible in lower scopes unless explictly made global in the lower scope:

function get($string) {
   global $vars;
   eval('$x = $vars' . $string);
   return $x;
}

get("['two']['two-two']");

might work, but this isn't tested, and using eval is almost always a very bad idea.