PHP Arithmetic Operators

The PHP arithmetic operator are used with numeric values to common arithmetical operations, such as addition, subtraction, multiplication etc.

Operator    Name          Example        Result    
+          Addition       $x + $y        Sum of $x and $y    
-          Subtraction    $x - $y        Difference of $x and $y    
*          Multiplication $x * $y        Product of $x and $y    
/          Division       $x / $y        Quotient of $x and $y    
%          Modulus        $x % $y        Remainder of $x divided by $y    
**         Exponentiation $x ** $y       Result of raising $x to the $y'th
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