Source

100 	 	// legacy usage: $data was defaulting to $_REQUEST, parameter not passed in doc.silverstripe.org tutorials
101 		if(!isset($data) || !is_array($data)) $data = $_REQUEST;
102 		
103 		// set language (if present)
104 		if(class_exists('Translatable') && singleton('SiteTree')->hasExtension('Translatable') && isset($data['locale'])) {
105 			$origLocale = Translatable::get_current_locale();
106 			Translatable::set_current_locale($data['locale']);
107 		}
108 	
109 		$keywords = $data['Search'];
110 
111 	 	$andProcessor = create_function('$matches','
112 	 		return " +" . $matches[2] . " +" . $matches[4] . " ";
113 	 	');
114 	 	$notProcessor = create_function('$matches', '
115 	 		return " -" . $matches[3];

Trace

• SearchForm->getResults(,)
  SearchFormExtension.php:59
• SearchFormExtension_SearchForm->getResults()
  SearchFormExtension.php:45
• SearchFormExtension->results(Array,SearchFormExtension_SearchForm,SS_HTTPRequest)
  
• call_user_func_array(Array,Array)
  Object.php:643
• Object->__call(results,Array)
  Form.php:362
• Page_Controller->results(Array,SearchFormExtension_SearchForm,SS_HTTPRequest)
  Form.php:362
• Form->httpSubmission(SS_HTTPRequest)
  RequestHandler.php:184
• RequestHandler->handleRequest(SS_HTTPRequest,DataModel)
  RequestHandler.php:206
• RequestHandler->handleRequest(SS_HTTPRequest,DataModel)
  Controller.php:153
• Controller->handleRequest(SS_HTTPRequest,DataModel)
  ContentController.php:197
• ContentController->handleRequest(SS_HTTPRequest,DataModel)
  ModelAsController.php:68
• ModelAsController->handleRequest(SS_HTTPRequest,DataModel)
  Director.php:296
• Director::handleRequest(SS_HTTPRequest,Session,DataModel)
  Director.php:119
• Director::direct(/about-us/SearchForm,DataModel)
  main.php:126