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

Is there a more efficient way to code this than what I have?
I have three associative arrays.

$combinedSettings
$userSettings
$defaultSettings

frames get header location..
i have two frames, one top, one bottom. how do i do a form on the bottom frame that gives me the ur

1,000 select boxes with 100 options?!
I have 1 drop down select box with 1,000 options.


In some case, there will be 100+ of the

Mail sending is slow on server
Why mail is taking time to be send on apache-linux server

Filtering an Array Based on Value
I have a very simple script set up that pulls data from a database and is output using this code:

Image upload - determine folder
I have an upload script that may be accessed from different directories. Problem is, the script is m

Remove directories not empty
hi,
i have an array that contains some names (1,4,6,56...). Every integer is a name of a folder.<

Is this Safe or Unsafe?
Hi i made a few pages with lots of peoples help now i just want to know if they are safe or not can

mysql UNION | warning mysql_fetch_array !!
Code: <?php
$i = 0;
$query1="SELECT * FROM `products` WHERE `div

Adding to the next element in a multidimensional array
Hi, I'm trying to add a value to $node->field_spaces['nid'] where x is the next available spo