$xml=simplexml_load_file("natural_gas.xml") or die("Error: Cannot create object");

foreach($xml->state as $state) {
echo "State: " . $state->title . "<br>";
echo "Diesel Price: " . $state->d . "<br>";
echo "CNG Price: " . $state->cng . "<br>";
echo "LNG Price: " . $state->lng . "<br><br>";
}