A simple arithmetic example

Numeric types

 * Whole numbers, called integers (50, -1).
 * Decimal numbers, called floating point numbers (0.66667, -1.99998).

Arithmetic operators

 * Addition (+)
 * Subtraction (-)
 * Multiplication (*)
 * Division (/)
 * Modulo, or remainder (%)

Combined assignment operators

 * Addition (+=)  $num += 4 is the same as $num = $num + 4
 * Subtraction (-=) $num -= 4 is the same as $num = $num - 4
 * Multiplication (*=) $num *= 4 is the same as $num = $num * 4
 * Division (/=) $num /= 4 is the same as $num = $num / 4
 * Contatenation (.=) $String .= "hello" is the same as $string = $string."hello"

Autoincrement and autodecrement

 * Increment: $n++ is the same as $n = $n+1
 * Decrement: $n-- is the same as $n = $n-1

PHP Table Example
Write a PHP script that displays a table showing the result of applying the various arithmetic operators to a variable. The output should looks something like:

Click here for a solution.