Calculator

The project is created for testing the Interpreter design pattern and practicing text tokenization mechanisms.

It works like this:

The solved example is passed to the TokenArray object as a string. The syntax of the string is simple: one space should be left before and after each digit or symbol. At the moment, tokenization and invocation of Interpreter pattern resources occur in this class.

Available operations:

+

-

*

/

As an example:

If you need to calculate (2+45-13+56-88+5+2)

$returnSum = new TokenArray("2 + 45 - 13 * 56 - 88 / 5 + 2");

echo $returnSum->getRez(); //-696.6