<?php
$username = strtolower($_GET["username"]);
$password = $_GET["password"];

$con = mysql_connect("localhost","MysqlUsername","MysqlPassword");
if (!$con)
  {
  die('conection failed');
  }

mysql_select_db("Database", $con);

$result = mysql_query("SELECT * FROM phpbb_users
WHERE username_clean='{$username}'");

while($row = mysql_fetch_array($result))
  {
  $realHash = $row['user_password'];
  }

if(phpbb_check_hash($password, $realHash))
    echo "true";
else
    echo "false";


  function phpbb_check_hash($password, $hash)
{
    $itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
    if (strlen($hash) == 34)
    {
        return (_hash_crypt_private($password, $hash, $itoa64) === $hash) ? true : false;
    }

    return (md5($password) === $hash) ? true : false;
}

function _hash_encode64($input, $count, &$itoa64)
{
    $output = '';
    $i = 0;

    do
    {
        $value = ord($input[$i++]);
        $output .= $itoa64[$value & 0x3f];

        if ($i < $count)
        {
            $value |= ord($input[$i]) << 8;
        }

        $output .= $itoa64[($value >> 6) & 0x3f];

        if ($i++ >= $count)
        {
            break;
        }

        if ($i < $count)
        {
            $value |= ord($input[$i]) << 16;
        }

        $output .= $itoa64[($value >> 12) & 0x3f];

        if ($i++ >= $count)
        {
            break;
        }

        $output .= $itoa64[($value >> 18) & 0x3f];
    }
    while ($i < $count);

    return $output;
}

function _hash_crypt_private($password, $setting, &$itoa64)
{
    $output = '*';

    // Check for correct hash
    if (substr($setting, 0, 3) != '$H$')
    {
        return $output;
    }

    $count_log2 = strpos($itoa64, $setting[3]);

    if ($count_log2 < 7 || $count_log2 > 30)
    {
        return $output;
    }

    $count = 1 << $count_log2;
    $salt = substr($setting, 4, 8);

    if (strlen($salt) != 8)
    {
        return $output;
    }
    if (PHP_VERSION >= 5)
    {
        $hash = md5($salt . $password, true);
        do
        {
            $hash = md5($hash . $password, true);
        }
        while (--$count);
    }
    else
    {
        $hash = pack('H*', md5($salt . $password));
        do
        {
            $hash = pack('H*', md5($hash . $password));
        }
        while (--$count);
    }

    $output = substr($setting, 0, 12);
    $output .= _hash_encode64($hash, 16, $itoa64);

    return $output;
}

?>