hanksudo

var stdev = function(arr) {
    var n = arr.length;
    var sum = 0;

    arr.map(function(data) {
        sum+=data;
    });

    var mean = sum / n;

jonmaim

<?php

/*
 *
 * This script will backup your web site by remotely archiving all files on the root FTP directory.
 * It will work even if your web server is memory limited buy splitting zips in several arhive files it they are too many files.
 * All zip files will be stored in a directory called temporary which must be writable.
 *
 * How to use it:
 * - Place the script at the root of your FTP.