Rename filename in php and javascript

Rename File using php

<?php
rename("FilePath/org_file.txt", "FilePath/new_file.txt");
?>

Rename File using Java Script

function ChangeFileName()
{
var fso, f;
fso = new ActiveXObject("Scripting.FileSystemObject");
f = fso.GetFile("FilePath/org_file.txt");
f.name = "new_file.txt";
}