php xml parser with simplexml on attibutes

<?php
//$str = file_get_contents("app.xml")
$xml = simplexml_load_file("app.xml");

$cnt = count($xml->state);
$res = mysql_connect("localhost",'root', '') or die(mysql_error());

mysql_select_db("yourdb") or die(mysql_error());
for($i=0;$i<=$cnt;$i++){
    $countryName =mysql_escape_string($xml->state[$i]->name);
    foreach($xml->state[$i]->attributes() as $a => $b)
      {
      //echo $a,'="',$b,"\"</br>";
      //echo $b."<br>";
      $countryId=$b;
      }
echo "<br>".$sql ="INSERT INTO `yourtable` ( `country` , `country_short` ) VALUES ('$countryName', '$countryId' );";
      
      mysql_query($sql) or die(mysql_error);
}
?>