mirror of
https://github.com/restoreddev/phpapprentice.git
synced 2025-08-02 12:57:59 +02:00
49 lines
930 B
Markdown
49 lines
930 B
Markdown
+++
|
|
title = "Arithmetic"
|
|
description = "Doing math like a pro"
|
|
tags = ["php", "arithmetic", "math"]
|
|
slug = "arithmetic"
|
|
previous = "variables.html"
|
|
next = "strings.html"
|
|
+++
|
|
Now that we know how to create variables, let's look at doing some math.
|
|
```php
|
|
<?php
|
|
|
|
$a = 1;
|
|
$b = 2;
|
|
```
|
|
|
|
To add two values, use the plus symbol.
|
|
```php
|
|
echo $a + $b;
|
|
```
|
|
|
|
To subtract, use the minus symbol.
|
|
```php
|
|
echo $b - $a;
|
|
```
|
|
|
|
To multiply two values, use an asterisk.
|
|
```php
|
|
echo $a * $b;
|
|
```
|
|
|
|
To divide values, use a forward slash.
|
|
```php
|
|
echo $b / $a;
|
|
```
|
|
|
|
PHP uses the percent symbol for calculating the modulus of two numbers.
|
|
The modulus is calculated by dividing two numbers and returning the remainder of the result.
|
|
In this example, the value of $mod will be 0.
|
|
```php
|
|
$mod = 10 % 5;
|
|
```
|
|
|
|
You can also use double asterisks to calculate a number to the power of another number.
|
|
The following statement will print 25.
|
|
```php
|
|
echo 5 ** 2;
|
|
```
|