Addition Example: 5 + 25
30
Subtraction Example: 25 - 5
20
Multiplication Example: 5 * 25
125
Division Example: 25 / 5
5
Modulus Example: Remainder of 123/20
3
Increment Example: 5 incremented by 1
6
Decrement Example: 25 decremented by 1
24

The PHP arithmetic operators are used for performing mathematical operations on numbers.