math.php

Example: +
4 + 10 = 14

Example: -
4 - 10 = -6

Example: *
4 * 10 = 40

Example: /
4 / 10 = 0.4

Example: %
4 % 10 = 4

Example: ++ (pre)
1

Example: ++ (post)
0

Example: -- (pre)
-1

Example: -- (post)
0

Explanation:

+ : addition operator - adds numbers
- : subtraction operator - subtracts numbers
* : multiplication operator - multiplies numbers
/ : division operator - divides numbers
% : modulus operator - returns the division remainder
++ : pre and post increment operator - Pre returns the value then adds one. Post adds one then returns the value.
-- : pre and post incrememt operator - Pre returns the value then subtracts one. Post subtracts one then returns the value.