traffic estimate service dynamic keywords

[pc]

Hi,

i am using the php estimatorkeywordtraffic.php and reading the keyword + matchtype from external source and i get this error.

 [RequiredError.REQUIRED @ selector.campaignEstimateRequests[0].adGroupEstimateRequests[0].keywordEstimateRequests.keyword[0].matchType, RequiredError.REQUIRED @ selector.campaignEstimateRequests[0].adGroupEstimateRequests[0].keywordEstimateRequests.keyword[0].text, RequiredError.REQUIRED @ selector.campaignEstimateRequests[0].adGroupEstimateRequests[0].keywordEstimateRequests.keyword[4].matchType]

  $keywords[] = new Keyword('$kword', '$mtype');

but if i use 

 $keywords[] = new Keyword('testing', 'EXACT'); -- this works 

am i missing something here.. any help is appreciated

thanks

[Shwetha Vastrad (AdWords API Team)]

Hello,

When you use single quotes, the variable doesn't get interpreted. I would suggest that you change to double quotes or remove quotes altogether.

You could change the line to this:

$keywords[] = new Keyword($kword, $mtype);

I hope this helps.

Regards,

Shwetha, AdWords API Team.

[pc]

Thanks for the response

tryed  with double quotes and no quotes but still getting the error.any help is very much appreciated

here is my code for reference, not sure where i am going wrong. 

<?php

require_once dirname(dirname(__FILE__)) . '/init.php';

 $keywords = array();

function EstimateKeywordTrafficExample(AdWordsUser $user) {

  $trafficEstimatorService =

      $user->GetService('TrafficEstimatorService', ADWORDS_VERSION);

  $kfile = fopen("keywords.txt","r");

  while (($line = fgets($kfile)) !== false)

  {

  //echo $line;

  $strng = strpos($line,'.');

  if ($strng == true){

   $arr = explode(".", $line, 2);

$kword = $arr[0];

$mtype = $arr[1];

//echo "$kword.$mtype \n";

break;

  }

  }

// fclose($kfile);

  $keywords[] = new keyword();

//   $keywords[] = new Keyword('dentist', 'BROAD');

//   $keywords[] = new Keyword("dentist hyderabad", "PHRASE");

//   $keywords[] = new Keyword('dentys', 'EXACT');

  $keywords[] = new Keyword($kword, $mtype);

  $keywordEstimateRequests = array();

  foreach ($keywords as $keyword) {

    $keywordEstimateRequest = new KeywordEstimateRequest();

    $keywordEstimateRequest->keyword = $keyword;

    $keywordEstimateRequests[] = $keywordEstimateRequest;

  }

  // Create ad group estimate requests.

  $adGroupEstimateRequest = new AdGroupEstimateRequest();

  $adGroupEstimateRequest->keywordEstimateRequests = $keywordEstimateRequests;

  $adGroupEstimateRequest->maxCpc = new Money(1000000);

  // Create campaign estimate requests.

  $campaignEstimateRequest = new CampaignEstimateRequest();

  $campaignEstimateRequest->adGroupEstimateRequests[] = $adGroupEstimateRequest;

  // Set targeting criteria. Only locations and languages are supported.

  $unitedStates = new Location();

  $unitedStates->id = 20453;

  $campaignEstimateRequest->criteria[] = $unitedStates;

  $english = new Language();

  $english->id = 1000;

  $campaignEstimateRequest->criteria[] = $english;

  // Create selector.

  $selector = new TrafficEstimatorSelector();

  $selector->campaignEstimateRequests[] = $campaignEstimateRequest;

  // Make the get request.

  $result = $trafficEstimatorService->get($selector);

  // Display results.

  $keywordEstimates =

      $result->campaignEstimates[0]->adGroupEstimates[0]->keywordEstimates;

  for ($i = 0; $i < sizeof($keywordEstimates); $i++) {

    $keywordEstimateRequest = $keywordEstimateRequests[$i];

    // Skip negative keywords, since they don't return estimates.

    if (!$keywordEstimateRequest->isNegative) {

      $keyword = $keywordEstimateRequest->keyword;

      $keywordEstimate = $keywordEstimates[$i];

      // Print the mean of the min and max values.

      printf("Results for the keyword with text '%s' and match type '%s':\n",

          $keyword->text, $keyword->matchType);

      if (isset($keywordEstimate->min->clicksPerDay) &&

          isset($keywordEstimate->max->clicksPerDay)) {

        $meanClicks = ($keywordEstimate->min->clicksPerDay

            + $keywordEstimate->max->clicksPerDay) / 2;

        printf("  Estimated daily clicks: %d\n", $meanClicks);

      }

    }

  }

}

// Don't run the example if the file is being included.

if (__FILE__ != realpath($_SERVER['PHP_SELF'])) {

  return;

}

try {

  // Get AdWordsUser from credentials in "../auth.ini"

  // relative to the AdWordsUser.php file's directory.

  $user = new AdWordsUser();

  // Log every SOAP XML request and response.

  $user->LogAll();

  // Run the example.

  EstimateKeywordTrafficExample($user);

} catch (Exception $e) {

  printf("An error has occurred: %s\n", $e->getMessage());

[Shwetha Vastrad (AdWords API Team)]

Hi,

The line below is causing the error: 

  $keywords[] = new keyword();

This is seeding empty values into the keywords array.