XML data handler problem s cestinou

$file = "uwe2004.xml";

global $i;
$i=false;
 

function startElement($parser, $name, $attrs)
{
    global $znacka;
    $znacka=$name;
    global $i;
    if($name=="UZIVATEL"){
    $i=true;
    }
    

    
}

function endElement($parser, $name)
{
    global $i;
    if($name=="UZIVATEL"){
    $i=false;
    }

}
function characterData($parser, $data)
{

      global $znacka;
      global $i;

  
      
    
      if ($i==true){
        echo $data."<br>";

 
        //mysql_query("insert into uzivatele (".$znacka.") values ('$data')");
        
      }
  
}
$xml_parser = xml_parser_create("UTF-8");
xml_set_element_handler($xml_parser, "startElement", "endElement");
xml_set_character_data_handler($xml_parser, "characterData");
if (!($fp = fopen($file, "r"))) {
    die("could not open XML input");
}

while ($data = fread($fp, 4096)) {
    if (!xml_parse($xml_parser, $data, feof($fp))) {
        die(sprintf("XML error: %s at line %d",
                    xml_error_string(xml_get_error_code($xml_parser)),
                    xml_get_current_line_number($xml_parser)));
    }
}



xml_parser_free($xml_parser);

- <UZIVATEL>
  <ID>5</ID> 
  <LOCKED>False</LOCKED> 
  <USER_JMENO>Květa</USER_JMENO> 
  <USER_AKTIVNI>0</USER_AKTIVNI> 
  <USER_PRIJMENI>Zázvorková</USER_PRIJMENI> 
  <USER_USERNAME>zazvorkova</USER_USERNAME> 
  <USER_HESLO>kveta</USER_HESLO> 
  <USER_KONTAKT /> 
  <USER_EMAIL /> 
  </UZIVATEL>
- <UZIVATEL>
  <ID>6</ID> 
  <LOCKED>False</LOCKED> 
  <USER_JMENO>Ladislava</USER_JMENO> 
  <USER_AKTIVNI>1</USER_AKTIVNI> 
  <USER_PRIJMENI>Posadovská</USER_PRIJMENI> 
  <USER_USERNAME>posadovska</USER_USERNAME> 
  <USER_HESLO>psdv</USER_HESLO> 
  <USER_KONTAKT /> 
  <USER_EMAIL /> 
  </UZIVATEL>
- <UZIVATEL>