More Mathematical Operators

• Increment and decrement works the same way as JavaScript.
• What are the results of the following operations?

$number = 0;
$value = 0;
$value = ++$number;
$value = $number++;
$value = --$number;
$value = number--;
• You can also use the shortcut:

+=, -=, *=, /=, %=, **=, .=
• So, the shortcut for adding 2 to $number is:

$number += 2;
• And, the shortcut for multiplying $number and $value and putting the result in $number is:

$number *= $value;