# Arithmetic calculation operators in php

There are several operators in PHP available for arithmetic calculations and all.

Use : For the addition of two numbers.
Example

```<?php
\$a = 30;
\$b = 10;
\$c = \$a + \$b;
echo \$c;
?>
```

Output will be ( 30 + 10 ):
40

Subtraction Operator : –
Use : Subtract one value from another value
Example

```<?php
\$a = 30;
\$b = 10;
\$c = \$a - \$b;
echo \$c;
?>
```

Output will be ( 30 – 10) :
20

Multiplication Operator : *
Use: Mutiply one value with another
Example

```<?php
\$a = 30;
\$b = 10;
\$c = \$a * \$b;
echo \$c;
?>
```

Output will be ( 30 * 10) :
300

Division Operator : /
Use : for the division of one value by another
Example

```<?php
\$a = 30;
\$b = 10;
\$c = \$a / \$b;
echo \$c;
?>
```

Output will be ( 30 / 10) :
3

Modulus Operator : %
It will return the division remainder
Example 1:

```<?php
\$a = 30;
\$b = 10;
\$c = \$a % \$b;
echo \$c;
?>
```

Output will be remainder of 30 / 10 :
0

Example 2:

```<?php
\$a = 5;
\$b = 2;
\$c = \$a % \$b;
echo \$c;
?>
```

Output will be remainder of 5 / 2) :
1

Example 3:

```<?php
\$a = 10;
\$b = 4;
\$c = \$a % \$b;
echo \$c;
?>
```

Output will be the remainder of 10 / 4 :
2

Increment Operator : ++
Use: Its a short code for using against + 1
Example

```<?php
\$a = 30;
\$a++;
echo \$a;
?>
```

Output will be ( 30 + 1 ):
31

Decrement Operator : —
Use: Its a short code for using against – 1
Example

```<?php
\$a = 30;
\$a--;
echo \$a;
?>
```

Output will be ( 30 – 1 ):
29

Negation Operator : will return the opposite of number
Example

```<?php
\$a = 30;
\$b = -\$a;
echo \$b;
?>
```

Output will be :
-30