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In PHP, the arithmetic operator can be used to realize the formula of addition, subtraction, multiplication and division. The arithmetic operator is used to calculate the values on both sides of the symbol. The calculation formulas are "x + y", "x-y", "x * y" and "x / y", which represent the sum, difference, product and quotient of the two numbers, respectively.

This article operating environment: Windows10 system, PHP7.1 version, Dell G3 computer.

What is the formula for calculating addition, subtraction, multiplication and division in php

PHP arithmetic operators are similar to mathematical operators in addition, subtraction, multiplication and division.

The most basic arithmetic operator

Plus +

Minus-

Multiply *

Except /

Take the remaining%

Examples are as follows:

Output result:

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