PHP: sqrt() function

Description

The sqrt() function is used to create a square root of a number.

Version:

(PHP 4 and above)

Syntax:

sqrt(num)

Parameter:

Return value

The square root of num.

Value Type: Float.

Pictorial Presentation

Example:

<?php
echo sqrt(100);
echo'<br>';
echo sqrt(999);
echo'<br>';
echo sqrt(2.25);
echo'<br>';
?>

Output:

10
31.606961258558
1.5 

View the example in the browser

See also

PHP Function Reference

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