rest.php

<?php
include('aws_signed_request.php');

function init() {  //get the amazon process output
  $row = 1;
  if (($handle = fopen("proccess.csv", "r")) !== FALSE) {
      while (($data = fgetcsv($handle, 1000, "\t")) !== FALSE) {
          $num = count($data);
          //echo "<p> $num fields in line $row: <br /></p>\n";
          $row++;
          $dataout = [];
          if ( isset($data[4]) ) {
            preg_match_all("@\((.+?)\)@", $data[4], $dataout);
          
            unset($dataout[1][1]);
            unset($dataout[0]);
            //$dataout[0] = array_values($dataout[0]);
            $dataout[1] = array_values($dataout[1]);
            $dataout = $dataout[1];
            $upcs[] = $dataout;
            //var_dump($dataout);
            //echo $data[4] . "\n";
          }
      }
      fclose($handle);
  }
  return($upcs);
}

function domdom($xml) {
        $salesRanks = [];
        $doc = new DomDocument("1.0", "ISO-8859-15" );
        $doc->preserveWhiteSpace = false;
        $doc->loadXML($xml);
        $xpath = new DOMXpath($doc);
        $xpath->registerNamespace('aw', "http://webservices.amazon.com/AWSECommerceService/2011-08-01");
        //$salesRankId = $xpath->query("//Items/Item/SalesRank");
        foreach ($xpath->query('//aw:ItemLookupResponse/aw:Items/aw:Item/aw:SalesRank') as $x) {
          $salesRanks[] = $x->nodeValue;
          }
        //var_dump($salesRanks);
        //return $salesRanks[0];
      
      return isset( $salesRanks[0] )?
        $salesRanks[0]:
        null;
                    }

function getAmazonSalesRank($ASINN) { 

$public_key = 'SECRET';
$private_key = 'SECRET';
$associate_tag = 'SECRET';

usleep(300000);
        // generate signed URL
        $request = aws_signed_request('com', array(
                'Operation' => 'ItemLookup', 
                'ItemId' => $ASINN,
                'ResponseGroup' => 'SalesRank'), $public_key, $private_key, $associate_tag);

        // do request (you could also use curl etc.)
        $url = $request;
              $ch =  curl_init();
              // set URL and other appropriate options
              curl_setopt($ch, CURLOPT_URL, $url);
              curl_setopt($ch, CURLOPT_HEADER, 0);
              curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
              // grab URL and pass it to the browser
              $request = curl_exec ($ch);
              curl_close($ch);
        //echo $request;
        $response = $request;
        $sales_rank = domdom($response);
        // parse XML
        /*$pxml = simplexml_load_string($response); 
        if ( !isset( $pxml->Items->Item->SalesRank ) ) {
          $sales_rank = "notset";
          var_dump($pxml->Items);
          echo "ERROR: $ASINN \n \n";
        } else {
          $sales_rank = (int) $pxml->Items->Item->SalesRank;
          echo "SUCCESS $ASINN";

        } */
        return [$ASINN=>$sales_rank];
    }

//$output = getAmazonSalesRank('B0001EL4QO');   var_dump($output);
$check = init();
echo "-----CHECK INIT----CHECK--INIT----- \n";
var_dump($check);
echo "-----END CHECK INIT---- END CHECK--INIT----- \n";

$resultArray = [];
foreach($check as $key2 => $val2)
{
  if ( isset($val2[1]) ) {
    $ex2 = explode(',',$val2[1]);
    foreach( $ex2 as $asinnn ){ $resultArray = $resultArray + getAmazonSalesRank( $asinnn ); }
  }
}
echo "----------result array------------------- \n";
var_dump($resultArray);
echo "----------end result array------------------- \n";
function gotAmazonSalesRank($ASIN, array $resultArray) {
    return isset( $resultArray[$ASIN] )?
        $resultArray[$ASIN]:
        null;
}

$sort_by_rank = function($a, $b) use ($resultArray)
  {
      $a = gotAmazonSalesRank($a, $resultArray);
      $b = gotAmazonSalesRank($b, $resultArray);
      if ($a === 0 or $a === NULL) {
        return -1;
      }
      if ($b === 0 or $b === NULL) {
        return -1;
      }
        if ($a == $b) {
          return 0;
        } else {
          return ($a < $b) ? -1 : 1;
        }
  };
echo "----======== UPC: Best ASIN Match ========---- \n";
foreach($check as $key => $val)
 {
  if ( isset($val[0]) ) {
    if (isset($val[1])) {
      $ex = explode(',',$val[1]);
      usort($ex,$sort_by_rank);
      echo "$val[0]: $ex[0] \n";
    } else {
      echo "$val[0]: not set \n";
    }
  }
 }

?>