Amazon Affiliate Settings
If you specify your Amazon Affiliate IDs, this plugin will automatically rewrite all Amazon.com/Amzn.com with ASIN inside your posts
to the A-FWD webservice. This webservice
will determine the users location (using IP Geolocation) and then forward them to their appropriate country store.
This plugin does not need any Javascript.
You don't need to specify all IDs, they are optional.
Please enter your country specific Affiliate IDs (or tracking IDs) here:
Note that to run the Geolocation service, A-FWD takes its own Affiliate ID for each 100th request or
if you do not specify an ID for that country.
]*)\s*href\s*=\s*"([^"]*)"\s*([^>]*)\s*>#');
// Regular Expression matching Amazon urls containing an asin
define('WAALG_REGEXP_ASIN', '#(?:http:\/\/)?(?:www\.)?(?:(?:amazon\.com/(?:[\w-&%]+\/)?(?:o\/ASIN|dp|ASIN|gp\/product|exec\/obidos\/ASIN)\/)|(?:amzn\.com\/))([A-Z0-9]{10})(?:[^"]+)?#');
// Regular Expression matching Amazon urls containing keywords
define('WAALG_REGEXP_KEYW', '#(?:http:\/\/)?(?:www\.)?(?:amazon\.)(?:com\/)(?:(?:gp\/search\/)|(?:s\/))(?:[^"]*)(?:keywords=)([^"&]*)(?:[^"]*)?#');
/**
* Callback for preg_replace_callback. If an URL is
* pointing to amazon.com and containing an asin it will be
* replaced with a link to a-fwd.com
*
*/
function waalg_asin_url_replacer($match) {
global $waalg_tlds;
$asin = $match[1];
$new_url = 'http://a-fwd.com/asin-com='.$asin;
// Append tracking ids for every country specified
foreach ($waalg_tlds as $tld) {
$tid = get_option('woboq_amazon_link_globalizer_affiliate_id_'.$tld);
if ($tid && strlen($tid) > 0)
$new_url = $new_url.'&'.$tld.'='.urlencode($tid);
}
return $new_url;
}
/**
* Callback for preg_replace_callback. If an URL is
* pointing to amazon.com and containing keywords it will be
* replaced with a link to a-fwd.com
*
*/
function waalg_keyw_url_replacer($match) {
global $waalg_tlds;
$keywords = $match[1];
$new_url = 'http://a-fwd.com/s='.$keywords;
// Append tracking ids for every country specified
foreach ($waalg_tlds as $tld) {
$tid = get_option('woboq_amazon_link_globalizer_affiliate_id_'.$tld);
if ($tid && strlen($tid) > 0)
$new_url = $new_url.'&'.$tld.'='.urlencode($tid);
}
return $new_url;
}
/**
* Callback for preg_replace_callback. Tries to replace html anchors
* containing amazon URLs with anchors containing URLs to the
* a-fwd.com webservice
*
*/
function waalg_link_replacer($match) {
$attributes1 = $match[1];
$url = $match[2];
$attributes2 = $match[3];
$found_matches = 0; // count matches
// Try replacing asin links
if (get_option('woboq_amazon_link_globalizer_enable_asin') == '1') {
$url = preg_replace_callback(WAALG_REGEXP_ASIN,
'waalg_asin_url_replacer',
$url,
-1,
$found_matches);
}
// Try replacing keyword links
if ( ($found_matches <= 0) &&
(get_option('woboq_amazon_link_globalizer_enable_keyw') == '1') ) {
$url = preg_replace_callback(WAALG_REGEXP_KEYW,
'waalg_keyw_url_replacer',
$url,
-1,
$found_matches);
}
// Build link, but don't do anything, if no replacements were made
if ($found_matches > 0) {
// Change 'rel' attribute to 'nofollow'
$attributes1 = preg_replace('#rel\s*=\s*"[^"]+"#',
'rel="nofollow"',
$attributes1,
-1,
$found_matches);
if ($found_matches <= 0) {
$attributes2 = preg_replace('#rel\s*=\s*"[^"]+"#',
'rel="nofollow"',
$attributes2,
-1,
$found_matches);
}
// No 'rel' attribute found, append one
if ($found_matches <= 0) {
$attributes2 = $attributes2.' rel="nofollow"';
}
// Build the actual link
$new_link = '