function _phrase_captcha_word_question_double_occurence in CAPTCHA Pack 8

Same name and namespace in other branches

1. 5 text_captcha/phrase_captcha/phrase_captcha.module \_phrase_captcha_word_question_double_occurence()
2. 6 text_captcha/phrase_captcha/phrase_captcha.inc \_phrase_captcha_word_question_double_occurence()
3. 7 text_captcha/phrase_captcha/phrase_captcha.module \_phrase_captcha_word_question_double_occurence()

Return details of 'double occurrence' challenge.

1 string reference to '_phrase_captcha_word_question_double_occurence'

phrase_captcha.settings.yml in text_captcha/modules/phrase_captcha/config/install/phrase_captcha.settings.yml

text_captcha/modules/phrase_captcha/config/install/phrase_captcha.settings.yml

File

text_captcha/modules/phrase_captcha/phrase_captcha.module, line 238

Implementation of a phrase based CAPTCHA, for use with the CAPTCHA module.

Code

function _phrase_captcha_word_question_double_occurence($words) {

  // Assure single occurence of each word.
  $words = array_unique($words);

  // Pick a word.
  $key = array_rand($words, 1);
  $answer = $words[$key];

  // Replace another word with it.
  while (($pos = array_rand($words, 1)) == $key) {

    // NOP aka NOOP aka pass.
  }
  array_splice($words, $pos, 1, $answer);
  $description = t('Which word occurs two times in the CAPTCHA phrase above?');
  return [
    $words,
    $description,
    $answer,
  ];
}