sqrt() function in PHP



The sqrt() function Returns the square root of a number.

Syntax

sqrt(num)

Parameters

  • num − The number for which you want to find the square root

Return

The sqrt() function Returns the square root of the specified number.

Example

 Live Demo

<?php
   echo(sqrt(16));
?>

Output

4

Example

Let us see another example −

 Live Demo

<?php
   echo(sqrt(0.25) . "<br>");
?>

Output

0.5<br>

Example

Let us see another example −

 Live Demo

<?php
   echo(sqrt(-144));
?>

Output

NAN
karthikeya Boyini
karthikeya Boyini

I love programming (: That's all I know


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