An operator is a symbol that makes the script perform a specific mathematical or logical manipulation. The operators in PHP can be grouped into five types: arithmetic, assignment, comparison, logical, and bitwise operators.
Arithmetic Operators
The arithmetic operators include the four basic arithmetic operations, as well as the modulus operator (%), which is used to obtain the division remainder.
$x = 4 + 2; // 6 // addition$x = 4 - 2; // 2 // subtraction$x = 4 * 2; // 8 // multiplication$x = 4 / 2; // 2 // division$x = 4 % 2; // 0 // modulus (division remainder)
An exponentiation operator (**) was introduced ...
