Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/survey/fillsurvey.php

1377 lines
51 KiB

<?php
/*
==============================================================================
Dokeos - elearning and course management software
Copyright (c) 2004-2008 Dokeos SPRL
For a full list of contributors, see "credits.txt".
The full license can be read in "license.txt".
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
See the GNU General Public License for more details.
Contact: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium, info@dokeos.com
==============================================================================
*/
/**
* @package dokeos.survey
* @author unknown, the initial survey that did not make it in 1.8 because of bad code
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University: cleanup, refactoring and rewriting large parts of the code
* @author Julio Montoya Armas <gugli100@gmail.com>, Dokeos: Personality Test modification and rewriting large parts of the code as well
* @version $Id: survey_list.php 10680 2007-01-11 21:26:23Z pcool $
*
* @todo use quickforms for the forms
* @todo check if the user already filled the survey and if this is the case then the answers have to be updated and not stored again.
* alterantively we could not allow people from filling the survey twice.
* @todo performance could be improved if not the survey_id was stored with the invitation but the survey_code
*/
// name of the language file that needs to be included
$language_file = 'survey';
// unsetting the course id (because it is in the URL)
if (!isset($_GET['cidReq']))
{
$cidReset = true;
}
else
{
$_cid = $_GET['cidReq'];
}
// including the global dokeos file
require ('../inc/global.inc.php');
// including additional libraries
//require_once (api_get_path(LIBRARY_PATH)."survey.lib.php");
require_once('survey.lib.php');
require_once (api_get_path(LIBRARY_PATH).'course.lib.php');
// breadcrumbs
if (!empty($_user))
{
$interbreadcrumb[] = array ("url" => 'survey_list.php?cidReq='.$_GET['course'],'name' => get_lang('SurveyList'));
}
// Header
Display :: display_header(get_lang('Survey'));
// getting all the course information
$_course = CourseManager::get_course_information($_GET['course']);
// Database table definitions
$table_survey = Database :: get_course_table(TABLE_SURVEY, $_course['db_name']);
$table_survey_answer = Database :: get_course_table(TABLE_SURVEY_ANSWER, $_course['db_name']);
$table_survey_question = Database :: get_course_table(TABLE_SURVEY_QUESTION, $_course['db_name']);
$table_survey_question_option = Database :: get_course_table(TABLE_SURVEY_QUESTION_OPTION, $_course['db_name']);
$table_course = Database :: get_main_table(TABLE_MAIN_COURSE);
$table_user = Database :: get_main_table(TABLE_MAIN_USER);
$table_survey_invitation = Database :: get_course_table(TABLE_SURVEY_INVITATION, $_course['db_name']);
// first we check if the needed parameters are present
if ((!isset ($_GET['course']) || !isset ($_GET['invitationcode']))&& !isset($_GET['user_id']))
{
Display :: display_error_message(get_lang('SurveyParametersMissingUseCopyPaste'), false);
Display :: display_footer();
exit;
}
$invitationcode = $_GET['invitationcode'];
// start auto-invitation feature FS#3403 (all-users-can-do-the-survey-URL handling)
if ($invitationcode == "auto" && isset($_GET['scode'])){
// not intended for anonymous users
if (!(isset ($_user['user_id']) && $_user['user_id']) || api_is_anonymous($_user['user_id'],true)) {
api_not_allowed();
}
$userid = $_user['user_id'];
$scode = Database::escape_string($_GET['scode']); //survey_code of the survey
$autoInvitationcode = "auto-$userid-".$scode; //new invitation code from userid
// the survey code must exist in this course, or the URL is invalid
$sql = "SELECT * FROM $table_survey WHERE code='" . $scode . "'";
$result = Database::query($sql);
if (Database :: num_rows($result) > 0){ // ok
// check availability
$row = Database :: fetch_array($result, 'ASSOC'); //
$tempdata = survey_manager :: get_survey($row['survey_id']);
check_time_availability($tempdata); //exit if survey not available anymore
// check for double invitation records (insert should be done once)
$sql = "SELECT user from $table_survey_invitation where invitation_code = '".Database::escape_string($autoInvitationcode)."'";
$result = Database::query($sql);
if (Database :: num_rows($result) == 0){ // ok
$sql = "insert into $table_survey_invitation (survey_code,user, invitation_code, invitation_date) ";
$sql .= " values (\"$scode\", \"$userid\", \"$autoInvitationcode\", now())";
Database::query($sql);
}
// from here we use the new invitationcode auto-userid-surveycode string
$_GET['invitationcode'] = $autoInvitationcode;
$invitationcode = $autoInvitationcode;
}
}
// end auto-invitation feature
// now we check if the invitationcode is valid
$sql = "SELECT * FROM $table_survey_invitation WHERE invitation_code = '" . Database :: escape_string($invitationcode) . "'";
$result = Database::query($sql, __FILE__, false); // false=suppress errors
if (Database::num_rows($result) < 1)
{
Display :: display_error_message(get_lang('WrongInvitationCode'), false);
Display :: display_footer();
exit;
}
$survey_invitation = Database::fetch_array($result,'ASSOC');
// now we check if the user already filled the survey
if ($survey_invitation['answered'] == 1 && !isset($_GET['user_id']))
{
Display :: display_error_message(get_lang('YouAlreadyFilledThisSurvey'), false);
Display :: display_footer();
exit();
}
// checking if there is another survey with this code.
// If this is the case there will be a language choice
$sql = "SELECT * FROM $table_survey WHERE code='".Database::escape_string($survey_invitation['survey_code'])."'";
$result = Database::query($sql);
if (Database::num_rows($result) > 1)
{
if ($_POST['language'])
{
$survey_invitation['survey_id'] = $_POST['language'];
}
else
{
echo '<form id="language" name="language" method="POST" action="'.api_get_self().'?course='.$_GET['course'].'&invitationcode='.$_GET['invitationcode'].'&cidReq='.$_GET['cidReq'].'">';
echo ' <select name="language">';
while ($row=Database::fetch_array($result,'ASSOC'))
{
echo '<option value="'.$row['survey_id'].'">'.$row['lang'].'</option>';
}
echo '</select>';
//echo ' <input type="submit" name="Submit" value="' . get_lang('Ok') . '" class="next" />';
echo '<button type="submit" name="Submit" class="next">'.get_lang('Ok').'</button>';
echo '</form>';
display::display_footer();
exit();
}
}
else
{
$row=Database::fetch_array($result,'ASSOC');
$survey_invitation['survey_id'] = $row['survey_id'];
}
// getting the survey information
$survey_data = survey_manager::get_survey($survey_invitation['survey_id']);
//echo '<pre>';print_r($survey_data);echo '</pre>';
//echo $survey_data['form_fields'];echo '-<br>-';echo $survey_data['show_form_profile'];
$survey_data['survey_id'] = $survey_invitation['survey_id'];
//print_r($survey_data);
// storing the answers
if (count($_POST)>0)
{
if ($survey_data['survey_type']==='0')
{
// getting all the types of the question (because of the special treatment of the score question type
$sql = "SELECT * FROM $table_survey_question WHERE survey_id = '".Database::escape_string($survey_invitation['survey_id'])."'";
$result = Database::query($sql);
while ($row = Database::fetch_array($result,'ASSOC'))
{
$types[$row['question_id']] = $row['type'];
}
// looping through all the post values
foreach ($_POST as $key=>$value)
{
// if the post value key contains the string 'question' then it is an answer on a question
if (strstr($key, 'question'))
{
// finding the question id by removing 'question'
$survey_question_id = str_replace('question', '',$key);
// if the post value is an array then we have a multiple response question or a scoring question type
// remark: when it is a multiple response then the value of the array is the option_id
// when it is a scoring question then the key of the array is the option_id and the value is the value
if (is_array($value))
{
SurveyUtil::remove_answer($survey_invitation['user'], $survey_invitation['survey_id'], $survey_question_id);
foreach ($value as $answer_key => $answer_value)
{
if ($types[$survey_question_id] == 'score')
{
$option_id = $answer_key;
$option_value = $answer_value;
}
else
{
$option_id = $answer_value;
$option_value = '';
}
SurveyUtil::store_answer($survey_invitation['user'], $survey_invitation['survey_id'], $survey_question_id, $option_id, $option_value, $survey_data);
}
}
// all the other question types (open question, multiple choice, percentage, ...)
else
{
if ($types[$survey_question_id] == 'percentage')
{
$sql = "SELECT * FROM $table_survey_question_option WHERE question_option_id='".Database::escape_string($value)."'";
$result = Database::query($sql);
$row = Database::fetch_array($result,'ASSOC');
$option_value = $row['option_text'];
} else {
$option_value = 0;
if ($types[$survey_question_id] == 'open') {
$option_value = $value;
//$value = 0;
}
}
$survey_question_answer = $value;
SurveyUtil::remove_answer($survey_invitation['user'], $survey_invitation['survey_id'], $survey_question_id);
SurveyUtil::store_answer($survey_invitation['user'], $survey_invitation['survey_id'], $survey_question_id, $value, $option_value, $survey_data);
//SurveyUtil::store_answer($user,$survey_id,$question_id, $option_id, $option_value, $survey_data);
}
}
}
}
elseif ($survey_data['survey_type']==='1') //conditional/personality-test type surveys
{
// getting all the types of the question (because of the special treatment of the score question type
$shuffle='';
if ($survey_data['shuffle']=='1')
{
$shuffle= ' ORDER BY RAND() ' ;
}
$sql = "SELECT * FROM $table_survey_question
WHERE survey_id = '".Database::escape_string($survey_invitation['survey_id'])."'
AND survey_group_pri='0' $shuffle
";
$result = Database::query($sql);
// there is only one question type for conditional surveys
while ($row = Database::fetch_array($result,'ASSOC'))
{
$types[$row['question_id']] = $row['type'];
}
// looping through all the post values
foreach ($_POST as $key=>$value)
{
// if the post value key contains the string 'question' then it is an answer to a question
if (strstr($key,'question'))
{
// finding the question id by removing 'question'
$survey_question_id = str_replace('question', '',$key);
// we select the correct answer and the puntuacion
$sql = "SELECT value FROM $table_survey_question_option " .
" WHERE question_option_id='".Database::escape_string($value)."'";
$result = Database::query($sql);
$row = Database::fetch_array($result,'ASSOC');
$option_value = $row['value'];
//$option_value = 0;
$survey_question_answer = $value;
//we save the answer after making sure that a possible previous attempt is deleted
SurveyUtil::remove_answer($survey_invitation['user'], $survey_invitation['survey_id'], $survey_question_id);
SurveyUtil::store_answer($survey_invitation['user'], $survey_invitation['survey_id'], $survey_question_id, $value, $option_value, $survey_data);
//SurveyUtil::store_answer($user,$survey_id,$question_id, $option_id, $option_value, $survey_data);
}
}
}
else //in case it's another type than 0 or 1
{
die(get_lang('ErrorSurveyTypeUnknown'));
}
}
// displaying the survey title and subtitle (appears on every page)
echo '<div id="survey_title">'.$survey_data['survey_title'].'</div>';
echo '<div id="survey_subtitle">'.$survey_data['survey_subtitle'].'</div>';
// checking time availability
check_time_availability($survey_data);
// displaying the survey introduction
if (!isset($_GET['show']))
{
// the first thing we do is delete the session
unset($_SESSION['paged_questions']);
unset($_SESSION['page_questions_sec']);
$paged_questions_sec=array();
echo '<div id="survey_content" class="survey_content">'.$survey_data['survey_introduction'].'</div>';
$limit = 0;
}
$user_id = api_get_user_id();
if ($user_id == 0)
{
$user_id = $survey_invitation['user'];
}
$user_data = UserManager :: get_user_info_by_id($user_id);
if ($survey_data['form_fields']!='' && $survey_data['anonymous'] == 0 && is_array($user_data))
{
//echo "<pre>"; print_r($survey_invitation);
$form_fields = explode('@', $survey_data['form_fields']);
$list = array ();
foreach ($form_fields as $field) {
$field_value = explode(':', $field);
if ($field_value[1] == 1) {
if ($field_value[0] != '') {
$val = api_substr($field_value[0], 8, api_strlen($field_value[0]));
$list[$val] = 1;
}
}
}
// we use the same form as in auth/profile.php
require_once (api_get_path(LIBRARY_PATH) . 'formvalidator/FormValidator.class.php');
$form = new FormValidator('profile', 'post', api_get_self() . "?" . str_replace('&show_form=1', '&show_form=1', $_SERVER['QUERY_STRING']), null, array (
'style' => 'width: 75%; float: ' . ($text_dir == 'rtl' ? 'right;' : 'left;')
));
if (api_is_western_name_order()) {
if ($list['firstname'] == 1 ) {
//FIRST NAME
$form->addElement('text', 'firstname', get_lang('FirstName'), array ('size' => 40));
if (api_get_setting('profile', 'name') !== 'true') {
$form->freeze(array ('firstname'));
}
$form->applyFilter(array ('firstname'), 'stripslashes');
$form->applyFilter(array ('firstname'), 'trim');
$form->addRule('firstname', get_lang('ThisFieldIsRequired'), 'required');
}
if ($list['lastname'] == 1) {
// LAST NAME
$form->addElement('text', 'lastname', get_lang('LastName'), array ('size' => 40));
if (api_get_setting('profile', 'name') !== 'true') {
$form->freeze(array ('lastname'));
}
$form->applyFilter(array ('lastname'), 'stripslashes');
$form->applyFilter(array ('lastname'), 'trim');
$form->addRule('lastname', get_lang('ThisFieldIsRequired'), 'required');
}
} else {
if ($list['lastname'] == 1) {
// LAST NAME
$form->addElement('text', 'lastname', get_lang('LastName'), array ('size' => 40));
if (api_get_setting('profile', 'name') !== 'true') {
$form->freeze(array ('lastname'));
}
$form->applyFilter(array ('lastname'), 'stripslashes');
$form->applyFilter(array ('lastname'), 'trim');
$form->addRule('lastname', get_lang('ThisFieldIsRequired'), 'required');
}
if ($list['firstname'] == 1 ) {
//FIRST NAME
$form->addElement('text', 'firstname', get_lang('FirstName'), array ('size' => 40));
if (api_get_setting('profile', 'name') !== 'true') {
$form->freeze(array ('firstname'));
}
$form->applyFilter(array ('firstname'), 'stripslashes');
$form->applyFilter(array ('firstname'), 'trim');
$form->addRule('firstname', get_lang('ThisFieldIsRequired'), 'required');
}
}
if ($list['official_code'] == 1) {
// OFFICIAL CODE
if (CONFVAL_ASK_FOR_OFFICIAL_CODE) {
$form->addElement('text', 'official_code', get_lang('OfficialCode'), array (
'size' => 40
));
if (api_get_setting('profile', 'officialcode') !== 'true')
$form->freeze('official_code');
$form->applyFilter('official_code', 'stripslashes');
$form->applyFilter('official_code', 'trim');
if (api_get_setting('registration', 'officialcode') == 'true' && api_get_setting('profile', 'officialcode') == 'true')
$form->addRule('official_code', get_lang('ThisFieldIsRequired'), 'required');
}
}
if ($list['email'] == 1) {
// EMAIL
$form->addElement('text', 'email', get_lang('Email'), array (
'size' => 40
));
if (api_get_setting('profile', 'email') !== 'true')
$form->freeze('email');
$form->applyFilter('email', 'stripslashes');
$form->applyFilter('email', 'trim');
if (api_get_setting('registration', 'email') == 'true')
$form->addRule('email', get_lang('ThisFieldIsRequired'), 'required');
$form->addRule('email', get_lang('EmailWrong'), 'email');
}
if ($list['phone'] == 1) {
// PHONE
$form->addElement('text', 'phone', get_lang('phone'), array (
'size' => 20
));
if (api_get_setting('profile', 'phone') !== 'true')
$form->freeze('phone');
$form->applyFilter('phone', 'stripslashes');
$form->applyFilter('phone', 'trim');
if (api_get_setting('profile', 'phone') == 'true')
$form->addRule('phone', get_lang('ThisFieldIsRequired'), 'required');
}
if ($list['language'] == 1) {
// LANGUAGE
$form->addElement('select_language', 'language', get_lang('Language'));
if (api_get_setting('profile', 'language') !== 'true')
$form->freeze('language');
if (api_get_setting('profile', 'language') == 'true')
$form->addRule('language', get_lang('ThisFieldIsRequired'), 'required');
}
// EXTRA FIELDS
$extra = UserManager :: get_extra_fields(0, 50, 5, 'ASC');
$extra_data = UserManager :: get_extra_user_data($user_id, true);
foreach ($extra as $id => $field_details) {
if ($field_details[6] == 0) {
continue;
}
if ($list['extra_' . $field_details[1]] == 1) {
switch ($field_details[2]) {
case USER_FIELD_TYPE_TEXT :
$form->addElement('text', 'extra_' . $field_details[1], $field_details[3], array (
'size' => 40
));
$form->applyFilter('extra_' . $field_details[1], 'stripslashes');
$form->applyFilter('extra_' . $field_details[1], 'trim');
if ($field_details[7] == 0)
$form->freeze('extra_' . $field_details[1]);
break;
case USER_FIELD_TYPE_TEXTAREA :
$form->add_html_editor('extra_' . $field_details[1], $field_details[3], false, false, array('ToolbarSet' => 'Profile', 'Width' => '100%', 'Height' => '130'));
$form->applyFilter('extra_' . $field_details[1], 'stripslashes');
$form->applyFilter('extra_' . $field_details[1], 'trim');
if ($field_details[7] == 0)
$form->freeze('extra_' . $field_details[1]);
break;
case USER_FIELD_TYPE_RADIO :
$group = array ();
foreach ($field_details[9] as $option_id => $option_details) {
$options[$option_details[1]] = $option_details[2];
$group[] = & HTML_QuickForm :: createElement('radio', 'extra_' . $field_details[1], $option_details[1], $option_details[2] . '<br />', $option_details[1]);
}
$form->addGroup($group, 'extra_' . $field_details[1], $field_details[3], '');
if ($field_details[7] == 0)
$form->freeze('extra_' . $field_details[1]);
break;
case USER_FIELD_TYPE_SELECT :
$options = array ();
foreach ($field_details[9] as $option_id => $option_details) {
$options[$option_details[1]] = $option_details[2];
}
$form->addElement('select', 'extra_' . $field_details[1], $field_details[3], $options, '');
if ($field_details[7] == 0)
$form->freeze('extra_' . $field_details[1]);
break;
case USER_FIELD_TYPE_SELECT_MULTIPLE :
$options = array ();
foreach ($field_details[9] as $option_id => $option_details) {
$options[$option_details[1]] = $option_details[2];
}
$form->addElement('select', 'extra_' . $field_details[1], $field_details[3], $options, array (
'multiple' => 'multiple'
));
if ($field_details[7] == 0)
$form->freeze('extra_' . $field_details[1]);
break;
case USER_FIELD_TYPE_DATE :
$form->addElement('datepickerdate', 'extra_' . $field_details[1], $field_details[3],array('form_name'=>'profile'));
$form->_elements[$form->_elementIndex['extra_' . $field_details[1]]]->setLocalOption('minYear', 1900);
$defaults['extra_'.$field_details[1]] = date('Y-m-d 12:00:00');
$form -> setDefaults($defaults);
if ($field_details[7] == 0)
$form->freeze('extra_' . $field_details[1]);
$form->applyFilter('theme', 'trim');
break;
case USER_FIELD_TYPE_DATETIME :
$form->addElement('datepicker', 'extra_' . $field_details[1], $field_details[3],array('form_name'=>'profile'));
$form->_elements[$form->_elementIndex['extra_'.$field_details[1]]]->setLocalOption('minYear',1900);
$defaults['extra_'.$field_details[1]] = date('Y-m-d 12:00:00');
$form -> setDefaults($defaults);
if ($field_details[7] == 0)
$form->freeze('extra_' . $field_details[1]);
$form->applyFilter('theme', 'trim');
break;
case USER_FIELD_TYPE_DOUBLE_SELECT :
foreach ($field_details[9] as $key => $element) {
if ($element[2][0] == '*') {
$values['*'][$element[0]] = str_replace('*', '', $element[2]);
} else {
$values[0][$element[0]] = $element[2];
}
}
$group = '';
$group[] = & HTML_QuickForm :: createElement('select', 'extra_' . $field_details[1], '', $values[0], '');
$group[] = & HTML_QuickForm :: createElement('select', 'extra_' . $field_details[1] . '*', '', $values['*'], '');
$form->addGroup($group, 'extra_' . $field_details[1], $field_details[3], '&nbsp;');
if ($field_details[7] == 0)
$form->freeze('extra_' . $field_details[1]);
// recoding the selected values for double : if the user has selected certain values, we have to assign them to the correct select form
if (key_exists('extra_' . $field_details[1], $extra_data)) {
// exploding all the selected values (of both select forms)
$selected_values = explode(';', $extra_data['extra_' . $field_details[1]]);
$extra_data['extra_' . $field_details[1]] = array ();
// looping through the selected values and assigning the selected values to either the first or second select form
foreach ($selected_values as $key => $selected_value) {
if (key_exists($selected_value, $values[0])) {
$extra_data['extra_' . $field_details[1]]['extra_' . $field_details[1]] = $selected_value;
} else {
$extra_data['extra_' . $field_details[1]]['extra_' . $field_details[1] . '*'] = $selected_value;
}
}
}
break;
case USER_FIELD_TYPE_DIVIDER :
$form->addElement('static', $field_details[1], '<br /><strong>' . $field_details[3] . '</strong>');
break;
}
$form->addRule('extra_' . $field_details[1], get_lang('ThisFieldIsRequired'), 'required');
}
}
$form->addElement('style_submit_button', '', get_lang('Next'),array('class'=>'next'));
$user_data = array_merge($user_data, $extra_data);
$form->setDefaults($user_data);
}
if ($survey_data['form_fields'] && $survey_data['anonymous'] == 0 && is_array($user_data) && !isset ($_GET['show'])) {
if ($form->validate()) {
$user_data = $form->exportValues();
if (is_array($user_data)) {
if (count($user_data)>0) {
$extras = array ();
// build SQL query
$sql = "UPDATE $table_user SET";
foreach ($user_data as $key => $value) {
if (substr($key, 0, 6) == 'extra_') { //an extra field
$extras[substr($key, 6)] = $value;
} else {
$sql .= " $key = '" . Database :: escape_string($value) . "',";
}
}
// remove trailing , from the query we have so far
$sql = rtrim($sql, ',');
$sql .= " WHERE user_id = '" . $user_id . "'";
Database::query($sql);
//update the extra fields
if (is_array($extras)) {
foreach ($extras as $key => $value) {
$myres = UserManager :: update_extra_field_value($user_id, $key, $value);
}
}
echo '<div id="survey_content" class="survey_content">' . get_lang('InformationUpdated') . ' ' . get_lang('PleaseFillSurvey') . '</div>';
}
}
//$_GET['show_form']=0;
//$show_form=0;
$_GET['show']=0;
$show=0;
//we unset the sessions
unset($_SESSION['paged_questions']);
unset($_SESSION['page_questions_sec']);
$paged_questions_sec=array();
}
//elseif ($_GET['show_form']==1) // // displaying the field
else {
echo '<div id="survey_content" class="survey_content">' . get_lang('UpdateInformation') . '</div>';
//we unset the sessions
unset($_SESSION['paged_questions']);
unset($_SESSION['page_questions_sec']);
$paged_questions_sec=array();
$form->display();
}
}
// displaying the survey thanks message
if (isset($_POST['finish_survey']))
{
echo '<div id="survey_content" class="survey_content"><strong>'.get_lang('SurveyFinished').'</strong> <br />'.$survey_data['survey_thanks'].'</div>';
survey_manager::update_survey_answered($survey_data['survey_id'], $survey_invitation['user'], $survey_invitation['survey_code']);
unset($_SESSION['paged_questions']);
unset($_SESSION['page_questions_sec']);
Display :: display_footer();
exit();
}
// sets the random questions
$shuffle='';
if ($survey_data['shuffle']==1)
{
$shuffle= ' BY RAND() ';
}
if ( isset($_GET['show']) || isset($_POST['personality']))
{
// Getting all the questions for this page and add them to a multidimensional array where the first index is the page.
// as long as there is no pagebreak fount we keep adding questions to the page
$questions_displayed = array();
$counter = 0;
$paged_questions = array();
// if non-conditional survey
if ($survey_data['survey_type']==='0')
{
if(empty($_SESSION['paged_questions']))
{
$sql = "SELECT * FROM $table_survey_question
WHERE survey_id = '".Database::escape_string($survey_invitation['survey_id'])."'
ORDER BY sort ASC";
$result = Database::query($sql);
while ($row = Database::fetch_array($result,'ASSOC'))
{
if($row['type'] == 'pagebreak')
{
$counter++;
}
else
{
// ids from question of the current survey
$paged_questions[$counter][] = $row['question_id'];
}
}
$_SESSION['paged_questions'] = $paged_questions;
}
else
{
$paged_questions = $_SESSION['paged_questions'];
}
if (key_exists($_GET['show'], $paged_questions)) {
if (isset($_GET['user_id'])) {
// get the user into survey answer table (user or anonymus)
$my_user_id=($survey_data['anonymous']==1) ? $_SESSION['surveyuser'] :api_get_user_id();
$sql = "SELECT survey_question.survey_group_sec1, survey_question.survey_group_sec2, survey_question.survey_group_pri,
survey_question.question_id, survey_question.survey_id, survey_question.survey_question, survey_question.display, survey_question.sort, survey_question.type, survey_question.max_value,
survey_question_option.question_option_id, survey_question_option.option_text, survey_question_option.sort as option_sort
FROM $table_survey_question survey_question
LEFT JOIN $table_survey_question_option survey_question_option
ON survey_question.question_id = survey_question_option.question_id
WHERE survey_question.survey_id = '" . Database :: escape_string($survey_invitation['survey_id']) . "'
AND survey_question.question_id NOT IN (SELECT sa.question_id FROM ".$table_survey_answer." sa WHERE sa.user='".$my_user_id."')
ORDER BY survey_question.sort, survey_question_option.sort ASC";
} else {
$sql = "SELECT survey_question.survey_group_sec1, survey_question.survey_group_sec2, survey_question.survey_group_pri,
survey_question.question_id, survey_question.survey_id, survey_question.survey_question, survey_question.display, survey_question.sort, survey_question.type, survey_question.max_value,
survey_question_option.question_option_id, survey_question_option.option_text, survey_question_option.sort as option_sort
FROM $table_survey_question survey_question
LEFT JOIN $table_survey_question_option survey_question_option
ON survey_question.question_id = survey_question_option.question_id
WHERE survey_question.survey_id = '".Database::escape_string($survey_invitation['survey_id'])."'
AND survey_question.question_id IN (".implode(',',$paged_questions[$_GET['show']]).")
ORDER BY survey_question.sort, survey_question_option.sort ASC";
}
$result = Database::query($sql);
$question_counter_max = Database::num_rows($result);
$counter = 0;
$limit=0;
$questions = array();
while ($row = Database :: fetch_array($result, 'ASSOC')) {
// if the type is not a pagebreak we store it in the $questions array
if ($row['type'] <> 'pagebreak') {
$questions[$row['sort']]['question_id'] = $row['question_id'];
$questions[$row['sort']]['survey_id'] = $row['survey_id'];
$questions[$row['sort']]['survey_question'] = $row['survey_question'];
$questions[$row['sort']]['display'] = $row['display'];
$questions[$row['sort']]['type'] = $row['type'];
$questions[$row['sort']]['options'][$row['question_option_id']] = $row['option_text'];
$questions[$row['sort']]['maximum_score'] = $row['max_value'];
}
// if the type is a pagebreak we are finished loading the questions for this page
else {
break;
}
$counter++;
}
}
}
elseif ($survey_data['survey_type']==='1')
{
$my_survey_id=Database::escape_string($survey_invitation['survey_id']);
$current_user = Database::escape_string($survey_invitation['user']);
if (isset($_POST['personality']))
{
// Compute the results to get the 3 groups nearest to the user's personality
if ($shuffle=='')
$order = 'BY sort ASC ';
else
$order = $shuffle;
$answer_list=array();
// get current user results
$results=array();
$sql = "SELECT survey_group_pri, user, SUM(value) as value
FROM $table_survey_answer as survey_answer INNER JOIN $table_survey_question as survey_question
ON (survey_question.question_id = survey_answer.question_id)
WHERE survey_answer.survey_id='".$my_survey_id."' AND
survey_answer.user='".$current_user."'
GROUP BY survey_group_pri
ORDER BY survey_group_pri
";
$result = Database::query($sql);
while ($row = Database :: fetch_array($result)) {
$answer_list['value']=$row['value'];
$answer_list['group']=$row['survey_group_pri'];
$results[]=$answer_list;
}
//echo "<br>";print_r($results); echo "<br>";
// get the total score for each group of questions
$totals=array();
$sql = "SELECT SUM(temp.value) as value, temp.survey_group_pri FROM
(SELECT MAX(value) as value, survey_group_pri, survey_question.question_id
FROM $table_survey_question as survey_question
INNER JOIN $table_survey_question_option as survey_question_option
ON (survey_question.question_id = survey_question_option.question_id)
WHERE survey_question.survey_id='".$my_survey_id."' AND survey_group_sec1='0' AND survey_group_sec2='0'
GROUP BY survey_group_pri, survey_question.question_id) as temp
GROUP BY temp.survey_group_pri
ORDER BY temp.survey_group_pri";
$result = Database::query($sql);
while ($row = Database::fetch_array($result))
{
$list['value']=$row['value'];
$list['group']=$row['survey_group_pri'];
$totals[]=$list;
}
//echo '<pre>'; print_r($totals);
$final_results=array();
//get a percentage score for each group
for ($i = 0; $i < count($totals); $i++) {
for ($j = 0; $j < count($results); $j++) {
if ($totals[$i]['group'] == $results[$j]['group']) {
$group=$totals[$i]['group'];
$porcen=($results[$j]['value'] / $totals[$i]['value'] );
$final_results[$group]=$porcen;
}
}
}
// sort the results by score (getting a list of group IDs by score into $groups)
arsort($final_results);
$groups=array_keys($final_results);
/*
echo '<pre>';
echo 'Group id => %';
echo "<br>";
print_r($final_results);
echo '</pre>';
*/
$result=array();
$count_result=0;
foreach ($final_results as $key => $sub_result) {
$result[] = array (
'group' => $key,
'value' => $sub_result
);
$count_result++;
}
/*
//i.e 70% - 70% -70% 70% $equal_count =3
while(1)
{
if ($result[$i]['value'] == $result[$i+1]['value'])
{
$equal_count++;
}
else
{
break;
}
$i++;
}
echo 'eq'. $equal_count;
echo "<br>";
if ($equal_count==0)
{
//i.e 70% 70% -60% 60% $equal_count = 1 only we get the first 2 options
if ( ($result[0]['value'] == $result[1]['value']) && ($result[2]['value']==$result[3]['value']) )
{
$group_cant=1;
}
else
{ // by default we chose the highest 3
$group_cant=2;
}
}
elseif ($equal_count==2)
{
$group_cant=2;
}
else
{
$group_cant=-1;
}
*/
//i.e 70% - 70% -70% 70% $equal_count =3
$i = 0;
$group_cant = 0;
$equal_count = 0;
// this is the case if the user does not select any question
if ($count_result>0)
{
// Count the number of scores equal to the first
while (1)
{
if ($result[$i]['value'] == $result[$i +1]['value'])
{
$equal_count++;
}
else
{
break;
}
$i++;
}
}
else
{
//we force the exit of the survey undeterminated
$equal_count=10;
}
//echo '<pre>';
//print_r($result);
// if we have only 3 or less equal scores (i.e. 0,1 or 2 equalities), then we can use the three first groups
if ($equal_count<4)
{
//if there is one or less score equalities
if ($equal_count === 0 || $equal_count === 1)
{
//i.e 70% - 70% -60% - 60% $equal_count = 1 we only get the first 2 options
if (($result[0]['value'] == $result[1]['value']) && ($result[2]['value'] == $result[3]['value']))
{
$group_cant = 1;
}
//i.e 70% - 70% -0% - 0% - $equal_count = 0 we only get the first 2 options
/*elseif (($result[0]['value'] == $result[1]['value']) && ($result[1]['value'] != $result[2]['value']) ) {
$group_cant=0;
}*/
/*
//i.e 70% - 70% -60% - 60% $equal_count = 0 we only get the first 2 options
elseif ( ($result[0]['value'] == $result[1]['value']) && ($result[2]['value'] == $result[3]['value']) )
{
$group_cant=0;
}*/
//i.e. 80% - 70% - 70% - 70%
elseif (($result[0]['value'] != $result[1]['value']) && ($result[1]['value'] == $result[2]['value']) && ($result[2]['value'] == $result[3]['value'])) {
$group_cant = 0;
}
else
{
//i.e. 80% - 70% - 70% - 50
//i.e. 80% - 80% - 70% - 50
// by default we choose the highest 3
$group_cant=2;
}
}
else
{
//if there are two score equalities
$group_cant=$equal_count;
}
//@todo
// conditional_status
// 0 no determinado
// 1 determinado
// 2 un solo valor
// 3 valores iguales
if ($group_cant>0)
{
//echo '$equal_count'.$group_cant;
// we only get highest 3
$secondary ='';
$combi='';
for ($i = 0; $i <= $group_cant; $i++) {
$group1=$groups[$i];
$group2=$groups[$i+1];
// here we made all the posibilities with the 3 groups
if ($group_cant == 2 && $i == $group_cant) {
$group2=$groups[0];
$secondary .= " OR ( survey_group_sec1 = '$group1' AND survey_group_sec2 = '$group2') ";
$secondary .= " OR ( survey_group_sec1 = '$group2' AND survey_group_sec2 = '$group1' ) ";
$combi.= $group1.' - '.$group2." or ".$group2.' - '.$group1."<br>";
} else {
if ($i != 0) {
$secondary .= " OR ( survey_group_sec1 = '$group1' AND survey_group_sec2 = '$group2') ";
$secondary .= " OR ( survey_group_sec1 = '$group2' AND survey_group_sec2 = '$group1' ) ";
$combi.= $group1.' - '.$group2." or ".$group2.' - '.$group1."<br>";
} else {
$secondary .= " ( survey_group_sec1 = '$group1' AND survey_group_sec2 = '$group2') ";
$secondary .= " OR ( survey_group_sec1 = '$group2' AND survey_group_sec2 = '$group1' ) ";
$combi.= $group1.' - '.$group2." or ".$group2.' - '.$group1."<br>";
}
}
}
/*
echo '<pre>';
echo "Pair of Groups <br /><br />";
echo $combi;
echo '</pre>';
*/
// create the new select with the questions from the secondary phase
if (empty($_SESSION['page_questions_sec']) && !is_array($_SESSION['page_questions_sec']) && count($_SESSION['page_questions_sec']==0))
{
$sql = "SELECT * FROM $table_survey_question
WHERE survey_id = '".$my_survey_id."'
AND ($secondary )
ORDER BY sort ASC";
$result = Database::query($sql);
$counter=0;
while ($row = Database::fetch_array($result,'ASSOC'))
{
if ($survey_data['one_question_per_page']==1)
{
$paged_questions_sec[$counter][] = $row['question_id'];
$counter++;
}
else
if($row['type'] == 'pagebreak')
{
$counter++;
} else {
// ids from question of the current survey
$paged_questions_sec[$counter][] = $row['question_id'];
}
}
$_SESSION['paged_questions_sec'] = $paged_questions_sec;
}
else
{
$paged_questions_sec = $_SESSION['paged_questions_sec'];
}
//print_r($paged_questions_sec);
$paged_questions = $_SESSION['paged_questions']; //for the sake of pages counting
//$paged_questions = $paged_questions_sec; //for the sake of pages counting coming up at display time...
if ($shuffle=='')
$shuffle=' BY survey_question.sort, survey_question_option.sort ASC ';
//$val=0;
//if ($survey_data['one_question_per_page']==0)
//{
$val=(int)$_POST['personality'];
//}
//echo '<pre>';print_r($paged_questions_sec);echo '</pre>';
if (is_array($paged_questions_sec))
{
$sql = "SELECT survey_question.survey_group_sec1, survey_question.survey_group_sec2, survey_question.survey_group_pri,
survey_question.question_id, survey_question.survey_id, survey_question.survey_question, survey_question.display, survey_question.sort, survey_question.type, survey_question.max_value,
survey_question_option.question_option_id, survey_question_option.option_text, survey_question_option.sort as option_sort
FROM $table_survey_question survey_question
LEFT JOIN $table_survey_question_option survey_question_option
ON survey_question.question_id = survey_question_option.question_id
WHERE survey_question.survey_id = '".$my_survey_id."'
AND survey_question.question_id IN (".implode(',',$paged_questions_sec[$val]).")
ORDER $shuffle ";
$result = Database::query($sql);
$question_counter_max = Database::num_rows($result);
$counter = 0;
$limit=0;
$questions = array();
while ($row = Database::fetch_array($result,'ASSOC'))
{
// if the type is not a pagebreak we store it in the $questions array
if ($row['type'] <> 'pagebreak') {
$questions[$row['sort']]['question_id'] = $row['question_id'];
$questions[$row['sort']]['survey_id'] = $row['survey_id'];
$questions[$row['sort']]['survey_question'] = $row['survey_question'];
$questions[$row['sort']]['display'] = $row['display'];
$questions[$row['sort']]['type'] = $row['type'];
$questions[$row['sort']]['options'][$row['question_option_id']] = $row['option_text'];
$questions[$row['sort']]['maximum_score'] = $row['max_value'];
// personality params
$questions[$row['sort']]['survey_group_sec1'] = $row['survey_group_sec1'];
$questions[$row['sort']]['survey_group_sec2'] = $row['survey_group_sec2'];
$questions[$row['sort']]['survey_group_pri'] = $row['survey_group_pri'];
}
// if the type is a pagebreak we are finished loading the questions for this page
else
{
break;
}
$counter++;
}
}
else
{
echo get_lang('SurveyUndetermined');
}
}
else
{
echo get_lang('SurveyUndetermined');
}
}
else
{
echo get_lang('SurveyUndetermined');
}
}
else
{
//We need this variable only in the 2nd set of questions when personality is set.
unset($_SESSION['page_questions_sec']);
$paged_questions_sec=array();
// Only the questions from the basic group
//the 50 questions A B C D E F G
$order_sql= $shuffle;
if ($shuffle=='')
$order_sql=' BY question_id ';
if(empty($_SESSION['paged_questions']))
{
$sql = "SELECT * FROM $table_survey_question
WHERE survey_id = '".Database::escape_string($survey_invitation['survey_id'])."'
AND survey_group_sec1='0' AND survey_group_sec2='0'
ORDER ".$order_sql." ";
//echo "<br>";echo "<br>";
$result = Database::query($sql);
$counter=0;
while ($row = Database::fetch_array($result,'ASSOC'))
{
if ($survey_data['one_question_per_page']==1)
{
$paged_questions[$counter][] = $row['question_id'];
$counter++;
} else {
if ($row['type'] == 'pagebreak') {
$counter++;
} else {
// ids from question of the current survey
$paged_questions[$counter][] = $row['question_id'];
}
}
}
$_SESSION['paged_questions'] = $paged_questions;
}
else
{
$paged_questions = $_SESSION['paged_questions'];
}
//print_r($paged_questions);
//print_r($paged_questions);
//if (key_exists($_GET['show'],$paged_questions))
//{
$order_sql= $shuffle;
if ($shuffle=='')
$order_sql=' BY survey_question.sort, survey_question_option.sort ASC ';
//$val=0;
//if ($survey_data['one_question_per_page']==0)
//{
$val=$_GET['show'];
//}
//echo '<pre>';print_r($paged_questions);echo $val;
$result=null;
if ($val!='')
{
$imploded= implode(',', $paged_questions[$val]);
if ($imploded!=''){
// the answers are always in the same order NO shuffle
$order_sql = ' BY survey_question.sort, survey_question_option.sort ASC ';
$sql = "SELECT survey_question.survey_group_sec1, survey_question.survey_group_sec2, survey_question.survey_group_pri,
survey_question.question_id, survey_question.survey_id, survey_question.survey_question, survey_question.display, survey_question.sort, survey_question.type, survey_question.max_value,
survey_question_option.question_option_id, survey_question_option.option_text, survey_question_option.sort as option_sort
FROM $table_survey_question survey_question
LEFT JOIN $table_survey_question_option survey_question_option
ON survey_question.question_id = survey_question_option.question_id
WHERE survey_question.survey_id = '" . Database :: escape_string($survey_invitation['survey_id']) . "'
AND survey_question.question_id IN (" .$imploded. ")
ORDER $order_sql ";
$result = Database::query($sql);
$question_counter_max = Database :: num_rows($result);
}
}
if (!is_null($result))
{
$counter = 0;
$limit = 0;
$questions = array ();
while ($row = Database :: fetch_array($result, 'ASSOC'))
{
// if the type is not a pagebreak we store it in the $questions array
if ($row['type'] <> 'pagebreak')
{
$questions[$row['sort']]['question_id'] = $row['question_id'];
$questions[$row['sort']]['survey_id'] = $row['survey_id'];
$questions[$row['sort']]['survey_question'] = $row['survey_question'];
$questions[$row['sort']]['display'] = $row['display'];
$questions[$row['sort']]['type'] = $row['type'];
$questions[$row['sort']]['options'][$row['question_option_id']] = $row['option_text'];
$questions[$row['sort']]['maximum_score'] = $row['max_value'];
// personality params
$questions[$row['sort']]['survey_group_sec1'] = $row['survey_group_sec1'];
$questions[$row['sort']]['survey_group_sec2'] = $row['survey_group_sec2'];
$questions[$row['sort']]['survey_group_pri'] = $row['survey_group_pri'];
}
// if the type is a pagebreak we are finished loading the questions for this page
else {
break;
}
$counter++;
}
}
}
}
else //in case it's another type than 0 or 1
{
echo get_lang('ErrorSurveyTypeUnknown');
}
}
// selecting the maximum number of pages
$sql = "SELECT * FROM $table_survey_question WHERE type='".Database::escape_string('pagebreak')."' AND survey_id='".Database::escape_string($survey_invitation['survey_id'])."'";
$result = Database::query($sql);
$numberofpages = Database::num_rows($result) + 1;
// Displaying the form with the questions
if (isset($_GET['show']))
{
$show = (int)$_GET['show'] + 1;
}
else
{
$show = 0;
}
// Displaying the form with the questions
if (isset($_POST['personality']))
{
$personality = (int)$_POST['personality'] + 1;
}
else
{
$personality= 0;
}
// Displaying the form with the questions
$g_c = (isset($_GET['course'])?Security::remove_XSS($_GET['course']):'');
$g_ic = (isset($_GET['invitationcode'])?Security::remove_XSS($_GET['invitationcode']):'');
$g_cr = (isset($_GET['cidReq'])?Security::remove_XSS($_GET['cidReq']):'');
$p_l = (isset($_POST['language'])?Security::remove_XSS($_POST['language']):'');
$add_parameters=isset($_GET['user_id']) ? 'user_id='.$_GET['user_id'].'&amp;': '';
echo '<form id="question" name="question" method="post" action="' . api_get_self() .'?'.$add_parameters. 'course=' . $g_c . '&invitationcode=' . $g_ic . '&show=' . $show . '&cidReq=' . $g_cr . '">';
echo '<input type="hidden" name="language" value="'.$p_l.'" />';
if(isset($questions) && is_array($questions))
{
foreach ($questions as $key=>$question)
{
$display = new $question['type'];
$display->render_question($question);
}
}
if ($survey_data['survey_type']==='0')
{
if ($survey_data['show_form_profile']==0)
{
// the normal survey as always
if (($show < $numberofpages) || !$_GET['show']) //$show = $_GET['show']+1
{
//echo '<input type="submit" name="next_survey_page" value="' . get_lang('Next') . ' " class="next" />';
echo '<button type="submit" name="next_survey_page" class="next">'.get_lang('NextQuestion').'</button>';
}
if ($show >= $numberofpages && $_GET['show']) {
//echo '<input type="submit" name="finish_survey" value="' . get_lang('FinishSurvey') . '" class="next" />';
echo '<button type="submit" name="finish_survey" class="next">'.get_lang('FinishSurvey').'</button>';
}
}
else
{
// the normal survey as always but with the form profile
if (isset ($_GET['show']))
{
$numberofpages=count($paged_questions);
if (($show < $numberofpages) || !$_GET['show']) //$show = $_GET['show']+1
{
//echo '<input type="submit" name="next_survey_page" value="' . get_lang('Next') . '" class="next" />';
echo '<button type="submit" name="next_survey_page" class="next">'.get_lang('Next').'</button>';
}
if ($show >= $numberofpages && $_GET['show'] )
{
//echo '<input type="submit" name="finish_survey" value="' . get_lang('FinishSurvey') . '" class="next" />';
echo '<button type="submit" name="finish_survey" class="next">'.get_lang('FinishSurvey').'</button>';
}
}
}
}
elseif ($survey_data['survey_type'] === '1') //conditional/personality-test type survey
{
if (isset ($_GET['show']) || isset ($_POST['personality']))
{
$numberofpages = count($paged_questions);
//echo "<br>"; echo 'num pages norma:'.$numberofpages;echo "<br>";
//echo '<pre>';print_r($paged_questions_sec);
if (!empty ($paged_questions_sec) && count($paged_questions_sec) > 0)
{
//in case we're in the second phase, also sum the second group questions
//echo 'pagesec :'.count($paged_questions_sec);
$numberofpages += count($paged_questions_sec);
//echo 'pagesec :';
}
else
{
// we need this variable only if personality ==1
unset($_SESSION['page_questions_sec']);
$paged_questions_sec=array();
}
/*echo "<br>";
echo 'num pages:'.$numberofpages;echo "<br>";
echo 'show :'.$show;echo "<br>";
echo 'personality :'.$personality;
echo "<br>";
*/
//echo $show.' / '.$numberofpages."<br />";
if ($personality ==0)
if ( ($show <= $numberofpages) || !$_GET['show'] ) //$show = $_GET['show']+1
{
//echo '<input type="submit" name="next_survey_page" value="' . get_lang('Next') . ' " class="next" />';
echo '<button type="submit" name="next_survey_page" class="next">'.get_lang('Next').'</button>';
if ($survey_data['one_question_per_page']==0)
{
if ($personality >= 0 )
{
echo '<input type="hidden" name="personality" value="' . $personality . '">';
}
}
else
{
if ($personality > 0 )
{
echo '<input type="hidden" name="personality" value="' . $personality . '">';
}
}
if ($numberofpages == $show)
echo '<input type="hidden" name="personality" value="' . $personality . '">';
}
if ($show > $numberofpages && $_GET['show'] && $personality==0)
{
echo '<input type="hidden" name="personality" value="' . $personality . '">';
//$numberofpages = count($paged_questions);
//echo $numberofpages = count($paged_questions_sec);
//echo $personality.' / '.$numberofpages;
//echo "<br />";
//if ($personality > count($paged_questions_sec) - 1)
//|| $numberofpages == $show +$personality +1
//echo $show + $personality;
//echo $numberofpages;
}
elseif ($personality >0 )
{
if ($survey_data['one_question_per_page']==1)
{
if ($show >= $numberofpages)
{
//echo '<input type="submit" name="finish_survey" value="' . get_lang('FinishSurvey') . ' " class="next" />';
echo '<button type="submit" name="finish_survey" class="next">'.get_lang('FinishSurvey').'</button>';
}
else
{
echo '<input type="hidden" name="personality" value="' . $personality . '">';
//echo '<input type="submit" name="next_survey_page" value="' . get_lang('Next') . '" class="next" />';
echo '<button type="submit" name="next_survey_page" class="next">'.get_lang('Next').'</button>';
}
}
else
{
// if the personality test hidden input was set.
//echo '<input type="submit" name="finish_survey" value="' . get_lang('FinishSurvey') . ' " class="next" />';
echo '<button type="submit" name="finish_survey" class="next">'.get_lang('FinishSurvey').'</button>';
}
}
}
// this is the case when the show_profile_form is true but there are not form_fields
elseif ($survey_data['form_fields'] == '')
{
//echo '<input type="submit" name="next_survey_page" value="' . get_lang('Next') . ' " class="next" />';
echo '<button type="submit" name="next_survey_page" class="next">'.get_lang('Next').'</button>';
}
elseif(!is_array($user_data))
{ // if the user is not registered in the platform we do not show the form to update his information
//echo '<input type="submit" name="next_survey_page" value="' . get_lang('Next') . ' " class="next" />';
echo '<button type="submit" name="next_survey_page" class="next">'.get_lang('Next').'</button>';
}
}
echo '</form>';
// Footer
Display :: display_footer();
/**
* Check if this survey has ended. If so, display message and exit rhis script
*/
function check_time_availability($surv_data){
$start_date = mktime(0, 0, 0, substr($surv_data['start_date'], 5, 2), substr($surv_data['start_date'], 8, 2), substr($surv_data['start_date'], 0, 4));
$end_date = mktime(0, 0, 0, substr($surv_data['end_date'], 5, 2), substr($surv_data['end_date'], 8, 2), substr($surv_data['end_date'], 0, 4));
$cur_date = time();
if ($cur_date < $start_date) {
Display :: display_warning_message(get_lang('SurveyNotAvailableYet'), false);
Display :: display_footer();
exit;
}
if ($cur_date > $end_date)
{
Display :: display_warning_message(get_lang('SurveyNotAvailableAnymore'), false);
Display :: display_footer();
exit;
}
}
?>