Keyword competition adwords

Adwords_Competition

<?php
$user = new AdWordsUser();
        $user->LogDefaults();

        $targetingIdeaService = $user->GetService('TargetingIdeaService', 'v201402');
        $keyword = 'mars cruise';
        $selector = new TargetingIdeaSelector();
        $selector->requestType = 'STATS';
        $selector->ideaType = 'KEYWORD';
        $selector->requestedAttributeTypes = array('COMPETITION');

        // code below give this exception: Unmarshalling Error: cvc-type.2: The type definition cannot be abstract for element ns1:searchParameters.
        $relatedToQuerySearchParameter = new RelatedToQuerySearchParameter();
        $relatedToQuerySearchParameter->queries = array($keyword);
        $selector->searchParameters[] = $relatedToQuerySearchParameter;

        //if do not use code above I have this error: [AuthenticationError.OAUTH_TOKEN_INVALID @ ; trigger:'']
        //could it be because my developer token is not registred yet?

        // Set selector paging (required by this service).
        $selector->paging = new Paging(0, 10);

        do {
            // code below gives this warning: Warning: curl_setopt() [function.curl-setopt]: CURLOPT_FOLLOWLOCATION cannot be activated when in safe_mode or an open_basedir is set in /googleads-php-lib-master/src/Google/Api/Ads/Common/Util/CurlUtils.php on line 107
            $page = $targetingIdeaService->get($selector);

            if (isset($page->entries)) {
                foreach ($page->entries as $targetingIdea) {
                    $data = MapUtils::GetMap($targetingIdea->data);

                    $competition =
                        isset($data['COMPETITION']->value)
                            ? $data['COMPETITION']->value : 0;
                    echo($competition);
                }
            } else {
                print "No keywords ideas were found.\n";
            }
            $selector->paging->startIndex += 10;
        } while ($page->totalNumEntries > $selector->paging->startIndex);