Celsius: -20, Fahrenheit: -4<br>Celsius: -10, Fahrenheit: 14<br>Celsius: 0, Fahrenheit: 32<br>Celsius: 10, Fahrenheit: 50<br>Celsius: 20, Fahrenheit: 68<br>Celsius: 30, Fahrenheit: 86<br>Celsius: 40, Fahrenheit: 104<br><h3>Using a custom loop:</h3>Celsius Array: -20 -10 0 10 20 30 40 <br>Fahrenheit Array: -4 14 32 50 68 86 104 <h3>Using var_dump:</h3>Celsius Array: array(7) {
  [0]=>
  int(-20)
  [1]=>
  int(-10)
  [2]=>
  int(0)
  [3]=>
  int(10)
  [4]=>
  int(20)
  [5]=>
  int(30)
  [6]=>
  int(40)
}
<br>Fahrenheit Array: array(7) {
  [0]=>
  int(-4)
  [1]=>
  int(14)
  [2]=>
  int(32)
  [3]=>
  int(50)
  [4]=>
  int(68)
  [5]=>
  int(86)
  [6]=>
  int(104)
}
<h3>Using print_r:</h3>Celsius Array: Array
(
    [0] => -20
    [1] => -10
    [2] => 0
    [3] => 10
    [4] => 20
    [5] => 30
    [6] => 40
)
<br>Fahrenheit Array: Array
(
    [0] => -4
    [1] => 14
    [2] => 32
    [3] => 50
    [4] => 68
    [5] => 86
    [6] => 104
)