readquestion($currentquestion)) { $questions[] = $question; $currentquestion = array(); } } return $questions; } function readquestion($lines) { $text = implode(' ', $lines); $text = str_replace(array('\t','\n','\r','\''), array('','','','\\\''), $text); $startpos = strpos($text, ''); if ($startpos === false || $endpos === false) { return false; } preg_match("//i", $text, $matches); $type = strtolower($matches[1]); // multichoice or multianswerchoice $questiontext = $this->unhtmlentities($this->stringbetween($text, '', '')); $questionhint = $this->unhtmlentities($this->stringbetween($text, '', '')); $questionaward = $this->stringbetween($text, '', ''); $optionlist = $this->stringbetween($text, '', ''); $optionlist = explode('stringbetween($option, ' correct="', '">'); $answer = $this->stringbetween($option, '">', ''); $optionscorrect[$n] = $correct; $optionstext[$n] = $this->unhtmlentities($answer); ++$n; } } else if ($type == 'multianswerchoice') { $numcorrect = 0; $totalaward = 0; $optionsaward = array(); foreach ($optionlist as $option) { preg_match("/correct=\"([^\"]*)\"/i", $option, $correctmatch); preg_match("/award=\"([^\"]*)\"/i", $option, $awardmatch); $correct = $correctmatch[1]; $award = $awardmatch[1]; if ($correct == 'yes') { $totalaward += $award; ++$numcorrect; } $answer = $this->stringbetween($option, '">', ''); $optionscorrect[$n] = $correct; $optionstext[$n] = $this->unhtmlentities($answer); $optionsaward[$n] = $award; ++$n; } } else { echo "

I don't understand this question type (type = $type).

\n"; } $question = $this->defaultquestion(); $question->qtype = MULTICHOICE; $question->name = substr($questiontext, 0, 30); if (strlen($questiontext) > 30) { $question->name .= '...'; } $question->questiontext = $questiontext; $question->single = ($type == 'multichoice') ? 1 : 0; $question->feedback[] = ''; $question->fraction = array(); $question->answer = array(); for ($n = 0; $n < count($optionstext); ++$n) { if ($optionstext[$n]) { if (!isset($numcorrect)) { // single answer if ($optionscorrect[$n] == 'yes') { $fraction = (int) $questionaward; } else { $fraction = 0; } } else { // mulitple answers if ($optionscorrect[$n] == 'yes') { $fraction = $optionsaward[$n] / $totalaward; } else { $fraction = -$optionsaward[$n] / count($optionstext); } } $question->fraction[] = $fraction; $question->answer[] = $optionstext[$n]; $question->feedback[] = ''; // no feedback in this type } } return $question; } function stringbetween($text, $start, $end) { $startpos = strpos($text, $start) + strlen($start); $endpos = strpos($text, $end); if ($startpos <= $endpos) { return substr($text, $startpos, $endpos - $startpos); } } function unhtmlentities($string) { $transtable = get_html_translation_table(HTML_ENTITIES); $transtable = array_flip($transtable); return strtr($string, $transtable); } }