function multichoice_evaluate_question in Quiz 6.2

Same name and namespace in other branches

1. 5.2 multichoice.module \multichoice_evaluate_question()
2. 5 multichoice.module \multichoice_evaluate_question()
3. 6.6 question_types/multichoice/multichoice.module \multichoice_evaluate_question()
4. 6.3 question_types/multichoice/multichoice.module \multichoice_evaluate_question()
5. 6.5 question_types/multichoice/multichoice.module \multichoice_evaluate_question()

Evaluate whether a question is correct.

Parameters

$question: Question node.

Return value

Array of results, in the form of: array( 'answers' => array of correct answer(s) 'tried' => array of selected answer(s) );

File

./multichoice.module, line 665

Multiple choice question type for the Quiz module.

Code

function multichoice_evaluate_question($question, $rid = null) {
  $tries = is_array($_POST['tries']) ? $_POST['tries'] : array(
    $_POST['tries'],
  );

  // Unset $_POST, otherwise it tries to use the previous answers on the next page...
  unset($_POST['tries']);

  // See the note in multichoice_store_answer. This is probably not needed.

  //$numanswers = db_query("SELECT count(answer_id) FROM {quiz_multichoice_answers} WHERE nid = %d AND vid = %d AND is_correct = 1", $question->nid, $question->vid);
  if ($rid && !empty($tries)) {

    // Clear old answers
    multichoice_clear_answer($question->nid, $question->vid, $rid);

    // Enter new answers
    foreach ($tries as $answer_id) {
      multichoice_store_answer($question->nid, $question->vid, $rid, $answer_id);
    }
  }

  // Return whether or not the user's response was correct.
  return multichoice_calculate_result($question->nid, $question->vid, $tries);
}