Arithmetic Operators on PHP

Remember basic arithmetic from school? These work just like those.
Arithmetic Operators


Example
Name
Result




-$a
Negation
Opposite of $a.


$a + $b
Addition
Sum of $a and $b.


$a - $b
Subtraction
Difference of $a and $b.


$a * $b
Multiplication
Product of $a and $b.


$a / $b
Division
Quotient of $a and $b.


$a % $b
Modulus
Remainder of $a divided by $b.



The division operator ("/") returns a float value unless the two operands are integers (or strings that get converted to integers) and the numbers are evenly divisible, in which case an…