Fetch ISBN XML from isbndb.com and Parse

Demonstrates sending a query to isbndb.com and parsing the XML response.

 Chilkat Perl Module Downloads for Windows, Linux, and MAC OS X

use chilkat();

$xml0 = new chilkat::CkXml();

#  The Chilkat XML component/class is freeware.

$xml = $xml0->HttpGet("http://isbndb.com/api/books.xml?access_key=XXXXX&results=details&index1=isbn&value1=0443074348");
if ($xml eq null ) {
    print $xml0->lastErrorText() . "\n";
    exit;
}

#  The XML returned for this URL is the following:

#  <?xml version="1.0" encoding="UTF-8" ?>

#  <ISBNdb server_time="2007-10-25T14:07:25Z">
#      <BookList total_results="1" page_size="10" page_number="1" shown_results="1">
#          <BookData book_id="diagnostic_histopathology_of_tumors_2_volume_set_with_cd_rom" isbn="0443074348">
#              <Title>Diagnostic Histopathology of Tumors: 2-Volume Set with CD-ROMs</Title>
#              <TitleLong>Diagnostic Histopathology of Tumors: 2-Volume Set with CD-ROMs (Diagnostic Histopathology of Tumors (Fletcher))</TitleLong>
#              <AuthorsText>Christopher D. M. Fletcher (Editor)</AuthorsText>
#              <PublisherText publisher_id="churchill_livingstone">Churchill Livingstone</PublisherText>
#              <Details dewey_decimal="616" physical_description_text="2166 pages" language="" edition_info="Hardcover; 2007-03-13" dewey_decimal_normalized="616" lcc_number="" change_time="2006-12-13T14:53:42Z" price_time="2007-10-25T01:12:13Z" />
#          </BookData>
#      </BookList>
#  </ISBNdb>

#  First, navigate to the BookData node:
$xml->FirstChild2();
$xml->FirstChild2();

#  Show the Title and AuthorsText:
print $xml->getChildContent("Title") . "\r\n";
print $xml->getChildContent("AuthorsText") . "\r\n";

#  Show the publisher_id attribute of the PublisherText node:

$xml2 = $xml->FindChild("PublisherText");
print $xml2->getAttrValue("publisher_id") . "\r\n";

#  Save the XML to a file:
$xml->SaveXml("book.xml");