A simple arithmetic example

Contents

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:

nmOperationResult
103$n+$m13
103$n-$m7

Click here for a solution.