How to implement addition, subtraction, multiplication and division operations in php

php method to implement addition, subtraction, multiplication and division: 1. Create a php sample file; 2. Define two variables as "$x" and "$y"; 3. Through "$x $y", "$x-$y", "$x*$y" and "$x/$y" formulas implement addition, subtraction, multiplication and division operations; 4. Use "echo" to output the operation results.

This tutorial operating system: Windows 10 system, PHP8.1 version, Dell G3 computer

How to implement addition, subtraction, multiplication and division in php Operation?

In PHP, operators are divided into: arithmetic operators, logical operators, ternary operators and bitwise operators.

We can implement addition, subtraction, multiplication and division operations through arithmetic operators in PHP.

The calculation formulas for addition, subtraction, multiplication and division are "x y", "x - y", "x * y" and "x / y", which respectively represent the sum, difference, product and quotient of two numbers.

php implementation code is as follows:

<?php
$x = 100;
$y = 150;
echo ($x + $y)."<br>"; // 输出 250
echo ($x - $y)."<br>"; // 输出 -100
echo ($x * $y)."<br>"; // 输出 1500
echo ($x / $y)."<br>"; // 输出 0.6666666666667
echo ($x % $y); // 输出 1
?>

Output result:

PHP arithmetic operator:

##x * ymultiplied by the product of x and y5 * 210##x / yx % y 10 % 82-x~xx Inversion, perform "inversion" operation based on binary digits . Operation rules: ##a . bCollocation Connect two strings"Hi" . "Ha"HiHa##Related expansion:at In PHP, the basic assignment operator is =. It means that the left operand is set to the value of the right-hand expression. That is, the value of $x = 5 is 5.

Operator

Operator	Name	Description	Instance	Result
x y	Add the sum of	x and y	2 2	4
x - y	minus the difference between	x and y	5 - 2	3
Divide	Quotient of x and y	15 / 5	3
Modulo (remainder of division)	Remainder of x divided by y	5 % 2	10 % 2 1	0
Set a negative number	Take the opposite sign of x	<?php $x = 2;echo -$x;?>	-2
Inversion		~1=-2; ~0=-1; <?php $x = 2;echo ~$x;?>	-3

is equivalent to x = yx = x yx = x - yx = x * yx = x / y x = x % ya = a . bRecommended learning: 《PHP Video Tutorial》

Description		x = y
The left operand is set to the value of the right-hand expression		x = y
Add		x -= y
minus		x *= y
times		x /= y
Division		x %= y
modulo (remainder of division)		a .= b
Connect two strings

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