会话数据问题编号的值没有增加并在 codeigniter 项目中传递
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【中文标题】会话数据问题编号的值没有增加并在 codeigniter 项目中传递【英文标题】：value for session data question number not getting incremented and passed in codeigniter project 【发布时间】：2020-09-05 14:44:36 【问题描述】：请建议我作为会话数据 question_number 的值没有增加并在 Codeigniter 项目中传递 1 的旧值 question_number 始终作为问题编号传递 代码最初应该将question_number设置为1，然后当用户第一次提交表单时，表单数据由同一个文档处理，问题编号应该加一并传递给下面的同一个表单 但不幸的是，这个新的问题编号并没有传递给隐藏的输入类型 看下面的代码
$con = mysqli_connect($dbhost, $dbuser, $dbpass, $dbName);
if (!$this->session->userdata("user_id"))
header("location:" . base_url() . "login");
$_SESSION['error'] = '';
$_SESSION['success'] = '';
// template methods start here ==========================================
if (isset($_POST["LaunchTest"]))
$test_id = addslashes($_POST['id']);
echo("test_id: " . $test_id . "<br />");
$session_id = addslashes($_POST['session_id']);
echo("session_id: " . $session_id . "<br />");
$counter = addslashes($_POST['counter']);
echo("counter: " . $counter . "<br />");
$score = addslashes($_POST['score']);
echo("score: " . $score . "<br />");
$question_number = addslashes($_POST['question_number']);
echo("question_number: " . $question_number . "<br />");
$answer = addslashes($_POST['hidden_answer']);
echo("answer: " . $answer . "<br />");
$user_choice = addslashes($_POST['radio_choice']);
echo("user_choice: " . $user_choice . "<br />");
$start_id = addslashes($_POST['start_id']);
echo("start_id: " . $start_id . "<br />");
$end_id = addslashes($_POST['end_id']);
echo("end_id: " . $end_id . "<br />");
$current_question= $question_number;
if ($user_choice==$answer)
$score++;
$preventRepeat = [];
$question_number = $question_number+1;
echo("new Question number: " . $question_number . "<br />");
$new_question = $question_number;
$_SESSION['question_number'] = $question_number;
$organisation = $_SESSION['organisation'];
date_default_timezone_set('Africa/Lagos');
$today = date('m/d/Y h:i:s a', time());
$sql_query = "UPDATE cbt_attempts_tbl SET "
. "currentQuestion ='"
. $current_question . "',"
. "score ='"
. $score . "',"
. "created_date ='"
. $today . "'"
. " WHERE session_id = '"
. $session_id .
"'";
; //$displayedRowCount = $rowCount;
echo $sql_query . "<br />";
$result = mysqli_query($con, $sql_query) or die("No data returned from DB Query");
//$candidate_quest_count++;
echo "database updated succesfully. <br />";
$current_question++;
if ($question_number > $_SESSION['total_questions'])
//calculate score
$score_output = calculateScore($score, $_SESSION['total_questions']);
//end test
header("location:" . base_url() . "score?id=" . $test_id .
"&test_session=" . $session_id. "score=". $score_output);
else
// myRandomNum = generateSecondRandomNumber();
$myRandomNum = generateRandomNumber($start_id, $end_id);
echo("myRandomNum: " . $myRandomNum . "<br />");
//$myRandomNum = preventRepeatingQuestions($myRandomNum);
$quesionAtRand_str = getQuestionAtRandom($myRandomNum, $con);
$QuestData_arr = explode("~", $quesionAtRand_str);
//echo("QuestData_arr is: " . $QuestData_arr . "<br />");
$Question = $QuestData_arr[1];
//echo("Question is: " . $Question . "<br />");
$OptA = $QuestData_arr[2];
//echo("OptA is: " . $OptA . "<br />");
$OptB = $QuestData_arr[3];
//echo("OptB is: " . $OptB . "<br />");
$OptC = $QuestData_arr[4];
//echo("OptC is: " . $OptC . "<br />");
$OptD = $QuestData_arr[5];
//echo("OptD is: " . $OptD . "<br />");
$Answer = $QuestData_arr[6];
//echo("Answer is: " . $Answer . "<br />");
?>
<?php include('admin_block.php'); ?>
<br/>
<?php
if (!isset($_GET["id"]))
$_SESSION['error'] = '<label class="text-danger">nothing selected.</label><br />';
header("location:" . base_url() . "launchtest");
exit();
$test_id = addslashes($_GET['id']);
//display deleted succesfully
//header return to update screen
$organisation = $_SESSION['organisation'];
$user_name = $_SESSION['user_name'];
// main start
//-----FIRST TIME RUN STARTS HERE---
if (!isset($test_session_id))
$arr_usr_choice = [];
$arr_correct_answer = [];
$arr_usr_choice[0] = "nothing";
$arr_correct_answer[0] = "nothing";
$candidate_quest_count = 1;
$question_number = 1;
$preventRepeat = [];
$counter = 1;
$current_question = 1;
$score = 0;
$_SESSION["score"] = 0;
$test_session_id = generateTestSessionId();
//echo("test_session_id is: " . $test_session_id . "<br />");
//gettestdetails from summary table
$testDetails = getTestDetailsFromSummary($con, $test_id);
//echo("testDetails: " . $testDetails . "<br />");
$dataFromSmryTble_arr = explode("~", $testDetails);
$test_name= $dataFromSmryTble_arr[2];
//echo("test_name: " . $test_name . "<br />");
$type = $dataFromSmryTble_arr[6];
//echo("type: " . $type . "<br />");
$subject = $dataFromSmryTble_arr[5];
//echo("subject: " . $subject . "<br />");
$total_questions = $dataFromSmryTble_arr[3];
//echo("total_questions: " . $total_questions . "<br />");
$start_id = $dataFromSmryTble_arr[0];
//echo("start_id: " . $start_id . "<br />");
$end_id = $dataFromSmryTble_arr[1];
//echo("end_id: " . $end_id . "<br />");
$_SESSION['total_questions'] = $total_questions;
loadDetailsToAttemptsTbl(
$con,
$test_id,
$test_session_id,
$test_name,
$type,
$subject,
$total_questions,
$start_id,
$end_id
);
//1. get test takers first name and lastname
if (!isset($_SESSION['firstname']) || !isset($_SESSION['lastname']))
header("location:" . base_url() . "enter_student_details?id=" . $test_id .
"&test_session=" . $test_session_id);
$firstname = $_SESSION['firstname'];
$lastname = $_SESSION['lastname'];
$output = displayFirstQuestion($con, $test_session_id); // duisplays one Question
//echo("output is: " . $output . "<br />");
$QuestData_arr = explode("~", $output);
//echo("output is: " . $output . "<br />");
$Question = $QuestData_arr[1];
//echo("Question is: " . $Question . "<br />");
$OptA = $QuestData_arr[2];
//echo("OptA is: " . $OptA . "<br />");
$OptB = $QuestData_arr[3];
//echo("OptB is: " . $OptB . "<br />");
$OptC = $QuestData_arr[4];
//echo("OptC is: " . $OptC . "<br />");
$OptD = $QuestData_arr[5];
//echo("OptD is: " . $OptD . "<br />");
$Answer = $QuestData_arr[6];
//echo("Answer is: " . $Answer . "<br />");
$_SESSION['question_number'] = $question_number;
//-----FIRST TIME RUN ENDS HERE---
echo '<form method="post" action="'. $_SERVER['PHP_SELF'].'?id=' . $test_id .
'&test_session=' . $test_session_id .'"';
echo '<h2 class="section-heading animated">'. $test_name .'</h2>';
echo '<TABLE class="my_style" border="0"><TR><TD>' . $firstname . " ". $lastname . '</TD></TR></TABLE>';
echo '<font color="#fff"><table class="my_style" border="0" cellpadding="2">';
echo '<tr >';
echo '<td valign="top" >' . $_SESSION["question_number"] . '</td>';
echo '<td valign="top" colspan="3" scope="col"><b>' . $Question . '</b></td>';
echo '</tr >';
echo '<tr >';
echo '<td></td><TD WIDTH="2%">A.</TD><td WIDTH="2%"><input name="radio_choice" type="radio" value="A" required /></td><td valign="top" >' . $OptA . '</td>';
echo '</tr >';
echo '<tr >';
echo '<td></td><TD WIDTH="2%">B.</TD><td WIDTH="2%"><input name="radio_choice" type="radio" value="B" /></td><td valign="top" >' . $OptB . '</td>';
echo '</tr >';
echo '<tr >';
echo '<td></td><TD WIDTH="2%">C.</TD><td WIDTH="2%"><input name="radio_choice" type="radio" value="C" /><td valign="top" >' . $OptC . '</td>';
echo '</tr >';
echo '<tr >';
echo '<td></td><TD WIDTH="2%">D.</TD><td WIDTH="2%"><input name="radio_choice" type="radio" value="D" /><td valign="top" >' . $OptD. '</td> <input type="hidden" value="'.$Answer.'" name="hidden_answer" /> ';
echo '</tr>';
echo '</tr >';
echo '<td colspan="4" ><input type="submit" style="background-color: #008CBA;" value="Next Question" name ="LaunchTest" onClick="checkRadios()"/>';
echo '<input type="hidden" name="id" value="'. $test_id.'"/>';
echo '<input type="hidden" name="question_number" value="'. $_SESSION["question_number"] .'"/>';
echo '<input type="hidden" name="session_id" value="'.$test_session_id.'"/>';
echo '<input type="hidden" name="counter" value="'.$counter.'"/>';
echo '<input type="hidden" name="score" value="'.$_SESSION["score"] .'"/>';
echo '<input type="hidden" name="start_id" value="'.$start_id.'"/>';
echo '<input type="hidden" name="end_id" value="'.$end_id.'"/>';
echo '</td>';
echo '</tr >';
echo '</table></font>';
echo '</form>';
// main end
?>
【问题讨论】：
1.) 这看起来不像 codeigniter - 它只是用 PHP 编写的代码； 2.）您的格式有点“混乱”，而且您的问题很不清楚恕我直言 - 请澄清问题。 请将视图和控制器代码分开。这就是使用框架背后的全部想法。 粗略一看，我可能漏掉了一些东西：你的代码中的$test_session_id 是什么？如果未设置，$question_number 将始终重置为 1。另外，请格式化问题，这很难理解。
我很尴尬。非常感谢大家的 cmets，@Ynhockey 是对的。 test_session_id 导致了问题。我还将视图与控制器分开
【参考方案1】：
@Ynhockey 是对的。 test_session_id 是导致问题的原因
【讨论】：
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