I use the header how to jump

How do I jump with the header?
I originally had a login.php, verify the username and password correctly after I use in PHP
echo ""; jump, results my colleagues in the ipad with Safari browsing, click the login button no response, username and password in the address bar can be seen. I can log in with Safari on my PC.
I think is not I use window.location reason, the authentication login extract to login2.php, want to use the header to jump, on the PC and ipad landed there on the login2.php don't give me jump.
login2.php file:
$rootdoc = $_server[' document_root ');
Require_once $rootdoc. ' /login/db/db.php ';
Define ("DEBUG", TRUE);
if (isset ($_request[' username ') &&isset ($_request[' PW ']))
{
$username =$_request[' username '];
$PW =$_request[' PW '];
if (DEBUG)
{
$database =new db (' localhost ', ' root ', ' 090807 ', ' practice ');
}
Else
{
$database =new db (', ', ', ', ');
}
$result = $database->query (' ', ' users ', ' username= ' $username ' and password= ' $PW ');
if ($result)
{
$count = mysql_num_rows ($result);
if ($count)
{
$row =mysql_fetch_array ($result);
$_session[' cuid ']= $row [' id '];
echo $_session[' cuid '];
echo "";
Header (' location:192.168.1.55/login/profile.php ');
Login is below Htdoc.
}
Else
{
echo "";
}
}
Else
{
echo "";
}
}
Else
{
Exit
}

------Solution--------------------
You this JS and PHP do not matter, change to this,
Plus/HTTP

Header (' location:http://192.168.1.55/login/profile.php ');

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