PHP example of querying book information on the Amazon website based on isbn book number_PHP tutorial

Plug-in description:
The plug-in searches the detailed information of the book on the Amazon website based on the 10-digit ISBN number provided.
If a result is found, a two-element array is returned, where the first element is the title of the book, and the second element is the URL address of the abbreviated image of the book cover.
It requires the following parameters: $ISBN 10-digit ISBN number

Copy code The code is as follows:

$isbn = '007149216X';
$result = PIPHP_GetBookFromISBN($isbn) ;
if (!$result) echo "Could not find title for ISBN '$isbn'.";
else echo " $result[0]";

function PIPHP_GetBookFromISBN($isbn)
{
// Plug-in 93: Get Book From ISBN
//
// This plug-in looks up an ISBN-10 at Amazon. com and then
// returns the matching book title and a thumbnail image
// of the front cover. It requires this argument:
//
// $isbn: The ISBN to look up
//
// Updated from the function in the book to take into
// account changes to the Amazon HTML.

$find = ' $img = 'http://ecx.images-amazon.com/images/I';

$page = @file_get_contents($url);
if (!strlen($page)) return array(FALSE);

$ptr1 = strpos($page, $find) + strlen($find);
if (!$ptr1) return array(FALSE);

$ptr2 = strpos($page, '" />', $ptr1);
$title = substr($page, $ptr1, $ptr2 - $ptr1);

$find = $img;
$ptr1 = strpos($page, $find) + strlen($find);
$ptr2 = strpos($page, '"', $ptr1);
$image = substr($page, $ptr1, $ptr2 - $ptr1);

return array($title, $img . $image);
}

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