我有一个测验网站，随机改组并汇总多项选择题。正确的答案（以及一些其他数据）存储在会话变量中，学生们可以将这些答案存储在会话变量中。答案通过POST发送。在测验表单提交链接到的页面上，将SESSION中的正确答案与POST数据进行比较，并显示测验结果。该网站过去工作得很好，所以我不知道发生了什么让它突然停止工作。
我已经检查过两个页面上的session_id是否相同。我已经确保start_session（）被放置在所有HTML之上（并且甚至通过在第一页和第二页上调用var_dump（$ _ SESSION）来确认它，显示用户登录变量，但没有其他内容。）
以下是＆＃34; startquiz.php＆＃34;的代码。它汇集了测验表格。有问题的会话变量就在＆＃34; DISPLAY A QUESTION LOOP＆＃34;
结束之后。<?php
require_once('appvars.php');
require_once('startsession.php');
require_once('generalauthorize.php');
$page_title = '10 Question Quiz';
require_once('header.php');
require_once('navbar.php');
require_once('connectvars.php');
//=================MySQL HANDLING====================
$dbc = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
$quizcount = count($_GET);
$content_array = [];
foreach($_GET as $quiz_content){
$quiz_content = $quiz_content . ' = 1';
array_push($content_array, $quiz_content);
}
$where_clause = implode(' OR ', $content_array);
$query = 'SELECT * FROM questionbank WHERE ' . $where_clause;
$data = mysqli_query($dbc, $query);
$questions_found = mysqli_num_rows($data);
mysqli_close($dbc);
//==================MySQL HANDLING=======================
if ($questions_found > 9) {
//==========MAKE A LIST OF POSSIBLE QUESTIONS==================
$possible_questions_array = [];
while ($row = mysqli_fetch_array($data)) {
array_push($possible_questions_array, $row);
}
//==========MAKE A LIST OF POSSIBLE QUESTIONS=================
// ============DECIDE WHICH 10 QUESTIONS TO USE=================
$quiz_array = [];
for($i = 0; $i < 10; $i++) {
$question_bank_count = count($possible_questions_array);
$random_question_number = rand(0, ($question_bank_count - 1));
array_push($quiz_array, $possible_questions_array[$random_question_number]);
array_splice($possible_questions_array, $random_question_number, 1);
}
// ============DECIDE WHICH 10 QUESTIONS TO USE=================
//============CREATE QUESTION META DATA ARRAY=================
$quiz_metadata_array = [];
for ($i = 0; $i < count($quiz_array); $i++) {
$question_holder = $quiz_array[$i];
$metadata_only = array_splice($question_holder, 12);
array_push($quiz_metadata_array, $metadata_only);
}
//============CREATE QUESTION META DATA ARRAY=================
echo '<div class="quiz-container">';
echo '<h2 class="mainpagetitles">Good Luck!</h2>';
echo '<br />';
echo '<form role="form" method="post" action="processquiz.php">';
//==============CREATE ARRAYS TO HOLD QUIZ DATA==========
$correct_answers = [];
$question_prompts = [];
//==============CREATE ARRAYS TO HOLD QUIZ DATA==========
//===============DISPLAY A QUESTION LOOP==================
for($i = 0; $i < (count($quiz_array)); $i++){
array_push($question_prompts, $quiz_array[$i]['question']);
//==================ISOLATE THE ANSWERS===============
$answers_array = [];
array_push($correct_answers, $quiz_array[$i]['answer']);
array_push($answers_array, $quiz_array[$i]['answer']);
array_push($answers_array, $quiz_array[$i]['distractor1']);
array_push($answers_array, $quiz_array[$i]['distractor2']);
array_push($answers_array, $quiz_array[$i]['distractor3']);
//==================ISOLATE THE ANSWERS===============
//=================SCRAMBLE THE ANSWERS==============
$scrambled_array = [];
$answer_count = count($answers_array);
for ($j = 0; $j < $answer_count; $j++) {
$random_answer_number = rand(0, (count($answers_array) - 1));
array_push($scrambled_array, $answers_array[$random_answer_number]);
array_splice($answers_array, $random_answer_number, 1);
}
//=================SCRAMBLE THE ANSWERS==============
//====================CREATE THE HTML=================
echo '<h3>Question ' . ($i + 1) . '.</h3>';
echo '<div class="question-container">';
echo '<p class="question">' . $quiz_array[$i]['question'] . '</p>';
//==============LOOP THROUGH THE SCRAMBLED ANSWERS===========
for($k = 0; $k < (count($scrambled_array)); $k++) {
echo '<label for="' . $i . $k . '" class="answer_choice">' . (chr((65 + $k))) . ': </label>';
echo '<input value="' . $scrambled_array[$k] . '" id="' . $i . $k . '" class="answer_choice" type="radio" name="' . $i . '" required><p class="answer_choice"> ' . $scrambled_array[$k] . '</p><br />';
}
//==============LOOP THROUGH THE SCRAMBLED ANSWERS===========
echo '</div>';
echo '<hr>';
//====================CREATE THE HTML=================
}
//===============DISPLAY A QUESTION LOOP==================
echo '<div class="center">';
$_SESSION['correct_answers'] = $correct_answers;
$_SESSION['question_prompts'] = $question_prompts;
$_SESSION['current_quiz'] = $_GET;
$_SESSION['current_quiz_meta'] = $quiz_metadata_array;
echo session_id();
echo '<button type="submit" class="centered-button">Finished!</button>';
echo '</div>';
echo '</form>';
echo '</div>';
} else {
echo '<div class="quiz-container">';
echo '<h2 class="center">Oh no!</h2>';
echo '<h4 class="center">It looks like there aren\'t enough questions in the database to take a quiz for this category yet!</h4>';
echo '<h4 class="center">Talk to your English teachers about adding some more.</h4>';
echo '<h4 class="center">Sorry about that!</h4><br />';
echo '<a class="main_menu_button" href="quizselect.php"> Okay </a>';
echo '</div>';
}
require_once('bootstrapfooter.php');
?>
以下是测验处理页面的代码。当我在这个页面上插入一个var_dump（$ _ SESSION）时，我得到了会话中的登录变量，但没有别的。
<?php
require_once('appvars.php');
require_once('startsession.php');
require_once('generalauthorize.php');
$page_title = 'Quiz Results';
require_once('header.php');
require_once('navbar.php');
require_once('connectvars.php');
//=====HAND OFF CURRENT QUIZ KEYWORDS TO LOCAL VARIABLE AND RESET GLOBAL====
$current_quiz = [];
foreach ($_SESSION['current_quiz'] as $key => $value) {
array_push($current_quiz, $value);
}
$_SESSION['current_quiz'] = "";
//=====HAND OFF CURRENT QUIZ KEYWORDS TO LOCAL VARIABLE AND RESET GLOBAL====
//=======UPDATE THE NUMBER OF THIS QUIZ TYPE TAKEN FOR THE USER ===========
$increment_these_quizzes = [];
for ($i = 0; $i < count($current_quiz); $i++) {
if ($current_quiz[$i] == "english_1_1" || $current_quiz[$i] == "english_1_2") {
if (!in_array('english_1_quiz_taken = english_1_quiz_taken + 1', $increment_these_quizzes)) {
$array_insert = 'english_1_quiz_taken = english_1_quiz_taken + 1';
array_push($increment_these_quizzes, $array_insert);
}
} elseif ($current_quiz[$i] == "english_2ot_1" || $current_quiz[$i] == "english_2ot_2") {
if (!in_array('english_2ot_quiz_taken = english_2ot_quiz_taken + 1', $increment_these_quizzes)) {
$array_insert = 'english_2ot_quiz_taken = english_2ot_quiz_taken + 1';
array_push($increment_these_quizzes, $array_insert);
}
} elseif ($current_quiz[$i] == "english_2pt_1" || $current_quiz[$i] == "english_2pt_2") {
if (!in_array('english_2pt_quiz_taken = english_2pt_quiz_taken + 1', $increment_these_quizzes)) {
$array_insert = 'english_2pt_quiz_taken = english_2pt_quiz_taken + 1';
array_push($increment_these_quizzes, $array_insert);
}
} elseif ($current_quiz[$i] == "english_2sw_1" || $current_quiz[$i] == "english_2sw_2") {
if (!in_array('english_2sw_quiz_taken = english_2sw_quiz_taken + 1', $increment_these_quizzes)) {
$array_insert = 'english_2sw_quiz_taken = english_2sw_quiz_taken + 1';
array_push($increment_these_quizzes, $array_insert);
}
} else {
$array_insert = $current_quiz[$i] . '_quiz_taken = ' . $current_quiz[$i] . '_quiz_taken + 1';
array_push($increment_these_quizzes, $array_insert);
}
}
$increment_this = implode(', ', $increment_these_quizzes);
$increase_quiz_count_query = "UPDATE memberinfo SET $increment_this WHERE user_id = $_SESSION[user_id]";
$dbc = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
mysqli_query($dbc, $increase_quiz_count_query);
mysqli_close($dbc);
//=======UPDATE THE NUMBER OF THIS QUIZ TYPE TAKEN FOR THE USER ===========
//================GET QUESTION COUNT & SCORE QUIZ===========
$score = 0;
$question_count = count($_SESSION['correct_answers']);
for($i = 0; $i < $question_count; $i++) {
$switch = 0;
$keywords = [];
//==============CORRECT ANSWER HANDLING=====================
if ($_POST[$i] == $_SESSION['correct_answers'][$i]) {
$generic_array = [];
$correct_array = [];
$score++;
foreach ($_SESSION['current_quiz_meta'][$i] as $key => $value) {
if ($switch == 1) {
if ($value == 1) {
if ($key == "english_1_1" || $key == "english_1_2") {
if (!in_array('english_1_correct = english_1_correct + 1', $correct_array)) {
$key = 'english_1_correct = english_1_correct + 1';
array_push($correct_array, $key);
}
if (!in_array('english_1_answers = english_1_answers + 1', $generic_array)) {
$gkey = 'english_1_answers = english_1_answers + 1';
array_push($generic_array, $gkey);
}
} elseif ($key == "english_2ot_1" || $key == "english_2ot_2") {
if (!in_array('english_2ot_correct = english_2ot_correct + 1', $correct_array)) {
$key = 'english_2ot_correct = english_2ot_correct + 1';
array_push($correct_array, $key);
}
if (!in_array('english_2ot_answers = english_2ot_answers + 1', $generic_array)) {
$gkey = 'english_2ot_answers = english_2ot_answers + 1';
array_push($generic_array, $gkey);
}
} elseif ($key == "english_2pt_1" || $key == "english_2pt_2") {
if (!in_array('english_2pt_correct = english_2pt_correct + 1', $correct_array)) {
$key = 'english_2pt_correct = english_2pt_correct + 1';
array_push($correct_array, $key);
}
if (!in_array('english_2pt_answers = english_2pt_answers + 1', $generic_array)) {
$gkey = 'english_2pt_answers = english_2pt_answers + 1';
array_push($generic_array, $gkey);
}
} elseif ($key == "english_2sw_1" || $key == "english_2sw_2") {
if (!in_array('english_2sw_correct = english_2sw_correct + 1', $correct_array)) {
$key = 'english_2sw_correct = english_2sw_correct + 1';
array_push($correct_array, $key);
}
if (!in_array('english_2sw_answers = english_2sw_answers + 1', $generic_array)) {
$gkey = 'english_2sw_answers = english_2sw_answers + 1';
array_push($generic_array, $gkey);
}
} else {
$keyword_generic = $key . '_answers = ' . $key . '_answers + 1';
$keyword_correct = $key . '_correct = ' . $key . '_correct + 1';
array_push($generic_array, $keyword_generic);
array_push($correct_array, $keyword_correct);
}
}
$switch = 0;
} else {
$switch = 1;
}
}
$set_what_generic = implode(', ', $generic_array);
$set_what = implode(', ', $correct_array);
$update_query = "UPDATE memberinfo SET $set_what WHERE user_id = $_SESSION[user_id]";
$update_generic_query = "UPDATE memberinfo SET $set_what_generic WHERE user_id = $_SESSION[user_id]";
$dbc = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
mysqli_query($dbc, $update_query);
mysqli_query($dbc, $update_generic_query);
mysqli_close($dbc);
//==============CORRECT ANSWER HANDLING=====================
//==============WRONG ANSWER HANDLING=====================
} else {
$generic_array = [];
foreach ($_SESSION['current_quiz_meta'][$i] as $key => $value) {
if ($switch == 1) {
if ($value == 1) {
if ($key == "english_1_1" || $key == "english_1_2") {
if (!in_array('english_1_answers = english_1_answers + 1', $generic_array)) {
$gkey = 'english_1_answers = english_1_answers + 1';
array_push($generic_array, $gkey);
}
} elseif ($key == "english_2ot_1" || $key == "english_2ot_2") {
if (!in_array('english_2ot_answers = english_2ot_answers + 1', $generic_array)) {
$gkey = 'english_2ot_answers = english_2ot_answers + 1';
array_push($generic_array, $gkey);
}
} elseif ($key == "english_2pt_1" || $key == "english_2pt_2") {
if (!in_array('english_2pt_answers = english_2pt_answers + 1', $generic_array)) {
$gkey = 'english_2pt_answers = english_2pt_answers + 1';
array_push($generic_array, $gkey);
}
} elseif ($key == "english_2sw_1" || $key == "english_2sw_2") {
if (!in_array('english_2sw_answers = english_2sw_answers + 1', $generic_array)) {
$gkey = 'english_2sw_answers = english_2sw_answers + 1';
array_push($generic_array, $gkey);
}
} else {
$keyword_generic = $key . '_answers = ' . $key . '_answers + 1';
array_push($generic_array, $keyword_generic);
}
}
$switch = 0;
} else {
$switch = 1;
}
}
$set_what_generic = implode(', ', $generic_array);
$update_generic_query = "UPDATE memberinfo SET $set_what_generic WHERE user_id = $_SESSION[user_id]";
$dbc = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
mysqli_query($dbc, $update_generic_query);
mysqli_close($dbc);
}
//===============WRONG ANSWER HANDLING=====================
}
//================GET QUESTION COUNT & SCORE QUIZ===========
//============ADJUST OVERALL TOTALS AND SUCCESS RATES===================
$update_score_query = "UPDATE memberinfo SET score = total_answers * overall_success_rate WHERE user_id = $_SESSION[user_id]";
$increase_totals_query = "UPDATE memberinfo SET total_quizzes_taken = total_quizzes_taken + 1, total_answers = total_answers + $question_count, total_correct = total_correct + $score WHERE user_id = $_SESSION[user_id]";
$adjust_success_query = "UPDATE memberinfo SET overall_success_rate = (total_correct / total_answers) * 100, phys_con_success = (phys_con_correct / phys_con_answers) * 100, abbr_success = (abbr_correct / abbr_answers) * 100, anatomy_success = (anatomy_correct / anatomy_answers) * 100, society_success = (society_correct / society_answers) * 100, career_success = (career_correct / career_answers) * 100, ment_heal_success = (ment_heal_correct / ment_heal_answers) * 100, tools_success = (tools_correct / tools_answers) * 100, other_success = (other_correct / other_answers) * 100, english_1_success = (english_1_correct / english_1_answers) * 100, english_2ot_success = (english_2ot_correct / english_2ot_answers) * 100, english_2pt_success = (english_2pt_correct / english_2pt_answers) * 100, english_2sw_success = (english_2sw_correct / english_2sw_answers) * 100 WHERE user_id = $_SESSION[user_id]";
$dbc = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
mysqli_query($dbc, $increase_totals_query);
mysqli_query($dbc, $adjust_success_query);
mysqli_query($dbc, $update_score_query);
//===============UPDATE THE RANKING CHARTS====================
//==========FIRS FLUSH ALL RANKINGS TO 0===================
$flush_rankings = "UPDATE memberinfo SET rank = 0";
mysqli_query($dbc, $flush_rankings);
//==========FIRS FLUSH ALL RANKINGS TO 0===================
//==========NEXT GET ELIGIBLE MEMBERS====================
$get_eligible_scores = "SELECT user_id FROM memberinfo WHERE total_quizzes_taken > 0 AND overall_success_rate >= 40 ORDER BY score DESC, overall_success_rate DESC, total_correct DESC";
$eligible_data = mysqli_query($dbc, $get_eligible_scores);
//==========NEXT GET ELIGIBLE MEMBERS====================
//==========LOOP THROUGH AND UPDATE THE DATABASE=================
$rank_number = 1;
while ($member_data = mysqli_fetch_array($eligible_data)) {
$rank_update_query = "UPDATE memberinfo SET rank = $rank_number WHERE user_id = $member_data[user_id]";
mysqli_query($dbc, $rank_update_query);
$rank_number++;
}
//==========LOOP THROUGH AND UPDATE THE DATABASE=================
//===============UPDATE THE RANKING CHARTS====================
mysqli_close($dbc);
//============ADJUST OVERALL TOTALS AND SUCCESS RATES===================
//=================DISPLAY SCORE & APPROPRIATE MESSAGE=========
echo '<div class="quiz_results">';
echo '<div class="container">';
if ($score == 10) {
echo '<h2 class="center">Perfect Score!!!</h2>';
} else if ($score > 7 && $score < 10) {
echo '<h2 class="center">Well Done!</h2>';
} else if ($score > 5 && $score < 8) {
echo '<h2 class="center">Good!</h2>';
} else if ($score > 3 && $score < 6) {
echo '<h2 class="center">Try a little harder!</h2>';
} else if ($score > 1 && $score < 4) {
echo '<h2 class="center">Oooh. Not good.</h2>';
} else if ($score <= 1) {
echo '<h2 class="center">Seriously? That bad?</h2>';
} else {
echo '<h2 class="center">How\'d you even get this score??</h2>';
}
echo '<h1 class="center">You scored ' . $score . '/' . $question_count . '</h1>';
//=================DISPLAY SCORE & APPROPRIATE MESSAGE=========
//================COMPARE AND DISPLAY ANSWERS=================
?>
<div id="quiz_table_headings" class="row">
<h2 class="col-xs-6">Correct Answer</h2>
<h2 class="col-xs-6">Your Answer</h2>
</div>
<?php
for ($i = 0; $i < $question_count; $i++) {
echo '<div id="quiz_table_question" class="row">';
echo '<p id="quiz_table_question_inner" class="col-xs-12">Question ' . ($i + 1) . ': ' . $_SESSION['question_prompts'][$i] . '</p>';
echo '</div>';
echo '<div id="quiz_table_data" class="row">';
echo '<p id="quiz_table_answer" class="col-xs-6">' . $_SESSION['correct_answers'][$i] . '</p>';
if ($_POST[$i] == $_SESSION['correct_answers'][$i]) {
echo '<p id="quiz_table_correct" class="col-xs-6">' . $_POST[$i] . '</p>';
} else {
echo '<p id="quiz_table_wrong" class="col-xs-6">' . $_POST[$i] . '</p>';
}
echo '</div>';
echo '<hr>';
}
echo '</div>';
//================COMPARE AND DISPLAY ANSWERS=================
//===========CREATE END OF QUIZ LINKS=====================
$replay_url = 'startquiz.php?';
$args_array = [];
for ($i = 0; $i < count($current_quiz); $i++) {
$arg = 'quiz' . $i . '=' . $current_quiz[$i];
array_push($args_array, $arg);
}
$link_args = "";
$link_args = implode('&', $args_array);
$replay_url .= $link_args;
//=============DISPLAY THE BUTTONS=====================
echo '<div class="container">';
echo '<div id="quiz_finish_buttons_row" class="row">';
echo '<div id="quiz_finish_buttons_col" class="col-xs-6">';
echo '<a class="centered-button" href="' . $replay_url . '">Take This Quiz Again</a>';
echo '</div>';
echo '<div id="quiz_finish_buttons_col" class="col-xs-6">';
echo '<a class="centered-button" href="quizselect.php">Back to Quiz Select</a><br />';
echo '</div>';
echo '</div></div>';
echo '</div>';
//=============DISPLAY THE BUTTONS=====================
//===========CREATE END OF QUIZ LINKS=====================
require_once('bootstrapfooter.php');
?>
我为发布每个页面的整个代码而道歉，但我不是专业的程序员，我不确定什么是相关的，什么不是。