PHP parses the author and title of each book through DOM

PHP parses the author and title of each book in DOM mode

$doc = new DOMDocument (' 1.0 ', ' utf-8 ');
$doc-Load (' book.xml ');
$books = $doc->getelementsbytagname (' book ');
$first _book = $books->item (0);
$first _title = $first _book->getelementbytagname (' title ')->item (0)->nodevalue;
$first _author = $first _book->getelementbytagname (' author ')->item (0)->nodevalue;
$second _book = $books->item (1);
$second _title = $second _book->getelementsbytagname (' title ');
$tar = $title->item (0);
$text = $tar->nodevalue;
$third _book = $books->item (2);
$third _title = $third _book->getelementsbytagname (' title ')->item (0)->nodevalue;
$third _author = $third _book->getelementsbytagname (' author ')->item (0)->nodevalue;
var_dump ($third _title);
var_dump ($third _author);
?>

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