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

Edit MySQL Row Using PHP and HTML Form
Hello,

Here's what I'm trying to do. Build a page where a user enters a MySQL row number in.

CODE NOT WORKING
Code: [Select]<?php
//include shared codes

include '../lib/common.php';
include

MySql timezone
Code: $sql = "SELECT *, date_format(date, '%m/%d/%Y at %I:%i %p' )as date FROM comments WHERE t

Help with writing "$" with fopen
I just can't get my syntax correct. Could someone help me please? I am trying to write a connect fil

RadioButtonList item spacing
I have a RadioButtonList and I can't put any spacing between the items. They are arranged verticall

UDS 4.0 Datatype issue
UDS 4.0.322 -- connecting to NI Labview 9.0

When using connection method: Cache with live

SAP Treasury - Commodities
We are running SAP ECC 6.0 with Treasury Activated.
EA-FIN is also activated (SFW5).

Retrieving Data from Two Different Databases
Hello All,

Ran into another problem and would appreciate some help! I have two datab

tell csv import script to ignore blank rows?
Hi i have the below script but i get an error if a row is blank ie a return in the csv file at the e

Calculating n! using vector
#include
#include
#include

using