First root of a number

Posted on 16th Feb 2014 07:03 pm by admin

Hi,

I can't find any function in php to give me the first root of a number.
Is there any built-in function for it?

For example:
81 => 3
9 => 3
64 => 2
256 => 2

I wrote this function to get it, But it seems sqrt always return a float.

Code: <?php
function getRoot($num)
{
if (is_int(sqrt($num))) // (strpos(sqrt($num), '.'))
$num = sqrt($num);

return $num;
}
?>

Any idea?

Your Answer:

Login to answer

Other forums

Pipe email to PHP - get mail adress from MySQL - send?
Hi all,

this is the challenge:

1) Our faculty at the college where I'm employed includ

FILTER_CALLBACK -- Files?
Hi All,

I'm using the php filter functions to validate my form data. For custom filters, I'm

php calculate
this code echoes correctly the sum but the inserted result is 0??
Code: <?php
$TotalNum

Error when call dll from oracle
Hi all, please help me!

I have dll write C language, I want call it from oracle procedur

MS Exchange 2007 integration with ECC 6.0
Hello Experts,
We have ECC 6.0 and MS Exchange 2007. We need to integrate ECC 6 and MS Excha

Logging and nologging bulk insert
Hi,

oracle version: 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production

UPLOAD IMAGES NOT WORKING!
Hi there i have a upload script in which it uploads the picture to a folder than creates two thumbna

Do not allow posting of whitespace
Currently the script below works if the user does not type a name/message, but if i create a whitesp

How do I create a 2D game "camera" to follow player?
In J2ME programming I'm targeting MIDP 2.0 devices.

I'm using gamecanvas and I was thinking t

Unexpected T_Variable ?
Hi all,
I dont really know what I am doing!! I know I'm doing something wrong, and I know its on