curl.php

<?php
    function Amazon($ASIN) {
     //$this->_ASIN = $ASIN;
      $url = "http://www.amazon.com/dp/" . $ASIN;
      $ch =  curl_init();
      // set URL and other appropriate options
      curl_setopt($ch, CURLOPT_URL, $url);
      curl_setopt($ch, CURLOPT_HEADER, 0);
      curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
      // grab URL and pass it to the browser
      $html = curl_exec ($ch);
          /* Clean-up */
          $html = str_replace("&nbsp;", " ", $html);

        //<li id="SalesRank"> <b>Amazon Best Sellers Rank:</b>   #125,047 in Beauty';
          function domdom($html) {
                      $doc = new DomDocument;
                      $doc->validateOnParse = true;
                      libxml_use_internal_errors(true);
                      $doc->LoadHTML($html);
                      $doc->preserveWhiteSpace = false;
                      $salesRankId = $doc->getElementById("SalesRank")->nodeValue;
                      return $salesRankId;
                    }

          function pregs($html, $ASIN) {
                $rel = '[#][0-9,]+';    //$re1='(?<=#)';  $re2='(.*)'; $re3='(?= in Beauty \(<a )';

                if ($c=preg_match_all ("/".$rel."/is", $html, $matches))
                {
                    $tag1=$matches[0][0] . " | " . $matches[0][1]; //$tag1 = preg_replace('/\s+/', '', $tag1); $tag1 = trim($tag1, '#'); $tag1 = trim($tag1, '/,');  $tag1 = preg_replace('/,/', '', $tag1);  $tag1 = (int) $tag1;  $tag1 = print_r($tag1);
                }
                return "$ASIN: $tag1 \n";        
            }
            //return(pregs($html, $ASIN));
            return( pregs ( domdom($html), $ASIN) );
    }
echo "ASIN:Ranking\n";  
$output = Amazon('B0001EL4QO'); // http://php.net/manual/en/function.array-map.php
echo $output;
?>