Splitting a string by token will produce either, an array with one string (same value), in case token does not exist in a string, or an array with two strings , in case token is found in a string . The first (left) element is string of what was before the token, and the second one (right) is what is string of what was after the token.(NOTE: in case string starts with a token, first element is an empty string)Considering that cookies are stored as follows: