freeCodeCamp/guide/english/php/PHP Operators/index.md

---
title: PHP Operators
---
## PHP Operators

<p>Operators are used to perform operations on variables and values.</p>
<p>PHP divides the operators in the following groups:</p>
<ul>
  <li>Arithmetic operators</li>
  <li>Assignment operators</li>
  <li>Comparison operators</li>
  <li>Increment/Decrement operators</li>
  <li>Logical operators</li>
  <li>String operators</li>
  <li>Array operators</li>
</ul>
<h3>PHP Arithmetic Operators</h3>
<p>The PHP arithmetic operators are used with numeric values to perform common arithmetical operations, such as addition, subtraction, multiplication etc.</p>
<table>
  <tr>
    <th>Operator</th>
    <th>Name</th>
    <th>Example</th>
    <th>Result</th>
  </tr>
  <tr>
    <td>+</td>
    <td>Addition</td>
    <td>$a + $b</td>
    <td>Sum of $a and $b</td>
  </tr>
  <tr>
    <td>-</td>
    <td>Subtraction</td>
    <td>$a - $b</td>
    <td>Difference of $a and $b</td>
  </tr>
  <tr>
    <td>*</td>
    <td>Multiplication</td>
    <td>$a * $b</td>
    <td>Product of $a and $b</td>
  </tr>
  
  <tr>
    <td>/</td>
    <td>Division</td>
    <td>$a / $b</td>
    <td>Quotient of $a and $b</td>
  </tr>
  <tr>
    <td>%</td>
    <td>Modulus</td>
    <td>$a % $b</td>
    <td>Remainder of $a divided by $b</td>
  </tr>
  <tr>
    <td>**</td>
    <td>Exponentiation</td>
    <td>$a ** $b</td>
    <td>Result of raising $a to the $b'th power </td>
  </tr>
</table>



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