The following XML document is in books.xml. Which code will output “Historical”?

1. $books = simplexml_load_string(‘books.xml’); echo $books->book[0]->categories->category[1];
2. $books = simplexml_load_file(‘books.xml’); echo $books->book[0]->categories->category[1];
3. $books = SimpleXMLElement(‘books.xml’); echo $books->book[0]->categories->category[1];
4. $books = SimpleXML(‘books.xml’); echo $books->book[0]->categories->category[1];

Correct Answer:

• $books = SimpleXMLElement(‘books.xml’); echo $books->book[0]->categories->category[1];