我无法通过几个页面传递我的变量“quiz_name”以进行测验。将“quiz_name”变量从question_menu.php作为$ _POST []发送到quiz_created.php以处理quiz_created.php之后，假设将变量发送回question_menu.php。我究竟做错了什么。说实话，我觉得我接近错了。
重述：
quiz_name =“如何评分篮子”，提交给question_menu.php作为$ _POST ['quiz_name']。然后提交给quiz_created.php作为$ _POST ['quiz_name']，然后提交回question_menu.php。
我将一个Variable quiz_name undefined错误发送回quesion_menu。
coach_quizzes.php
<head>
<title>Your Quizzes</title>
</head>
<body>
<h1> Current Quizzes </h1>
<form name="submit_button" action="create-quiz.php">
<input type="submit" value="Create Quiz">
</form>
</body>
</html>
提交至 - ＆gt; create_quiz.php
<?php session_start()
?>
<head>
<title>Your Quizzes</title>
</head>
<body>
<h1> Enter Quiz Name </h1>
<form action="questions_menu(test).php" method="post">
<input type="text" name="quiz_name" maxlength="30" size="30">
<input type="submit" value="Create Quiz">
</form>
</body>
</html>
输入：“如何为篮子打分”然后提交到question_menu.php
<!DOCTYPE html>
<html>
<head>
<title>Add Question</title>
<link rel="stylesheet" type="text/css" href="css/info_style.css" />
</head>
<body>
<div id="main">
<header>
<div id="welcome">
<h2>Prairie View A&M University</h2>
</div><!--close welcome-->
</header>
<div id="site_content">
<form enctype="multipart/form-data" method="post" action="quiz_created.php">
<table border="0" name"form_table">
<tr>
<td>Quiz Name</td>
<td><?php echo $_POST['quiz_name']?></td>
</tr>
<tr>
<td>Question</td>
<td><textarea name="description" rows="4" cols="50"></textarea></td>
</tr>
<tr>
<td>Option 1</td>
<td><input type="text" name="option1" maxlength="30" size="30"></td>
</tr>
<tr>
<td>Option 2</td>
<td> <input type="text" name="option2" maxlength="30" size="30"></td>
</tr>
<tr>
<td>Option 3</td>
<td><input type="text" name="option3" maxlength="30" size="30"></td>
</tr>
<tr>
<td>Answer</td>
<td>
<select name="dropdown">
<option value='option1'>Option 1</option>
<option value='option2'>Option 2</option>
<option value='option3'>Option 3</option>
</select>
</td>
</tr>
<tr>
<td>Image</td>
<td><input type="file" name="file" /><br />
<input type="hidden" name="MAX_FILE_SIZE" value="10000" /><br>
</td>
</tr>
<tr>
<td colspan="2"><p>
<input type="submit" value="Add Question">
</p></td>
</tr>
</table>
</form>
<?php
$username = "root";
$password = "";
$hostname = "localhost";
$database = "basketball_database";
$table = "coach_john";
$con = mysql_connect($hostname, $username, $password)
or die("Unable to connect to MYsql");
//echo "Connected to mysql<br>";
mysql_select_db("$database")
or die("Could not select Basketball_database");
//echo "Connected to database";
//update when update button pressed
if(isset($_POST['update'])){
$UpdateQuery = "UPDATE $table SET question_description='$_POST[description]', option_a='$_POST[option1]', option_b='$_POST[option2]', option_c='$_POST[option3]', answer='$_POST[dropdown]', question_id='$_POST[questionID]' WHERE question_id='$_POST[hidden]'";
mysql_query($UpdateQuery, $con);
};//end of if statement
//delete when delete button pressed
if(isset($_POST['delete'])){
$DeleteQuery = "DELETE FROM $table WHERE question_id='$_POST[hidden]'";
mysql_query($DeleteQuery, $con);
};//end of if statement
$mysql = "SELECT * FROM $table";
$mydata = mysql_query($mysql,$con);
//create table
echo "<table border=1
<tr>
<th>Question ID</th>
<th>Quiz Name</th>
<th>Question Description</th>
<th>Option 1</th>
<th>Option 2</th>
<th>Option 3</th>
<th>Answer</th>
<th>Picture</th>
</tr>";
//insert data into rows
while($records = mysql_fetch_array($mydata)){
echo "<form action=questions_menu(test).php method=post>";
echo "<tr>";
echo "<td>"."<input type=text name=questionID size=5 value=".$records['question_id']." </td>";
echo "<td>"."<input type=text name=option1 size=18 value=".$records['quiz_name']." </td>";
echo "<td>"."<textarea name=description rows=1 cols=25>".$records['question_description']."</textarea>"."</td>";
echo "<td>"."<input type=text name=option1 size=18 value=".$records['option_a']." </td>";
echo "<td>"."<input type=text name=option2 size=15 value=".$records['option_b']." </td>";
echo "<td>"."<input type=text name=option3 size= 15 value=".$records['option_c']." </td>";
echo "<td>"."<input type=text name=answer size=15 value=".$records['answer']." </td>";
echo "<td>". $records['image'] ." </td>";
echo "<td>"."<input type=hidden name=hidden value=".$records['question_id']." </td>";
//update button
echo "<td>"."<input type=submit name=update value=Update onclick='return confirm(\"Are you sure you want to update question?\")'>"." </td>";
//delete button
echo "<td>"."<input type=submit name=delete value=Delete onclick='return confirm(\"Are you sure you want to delete question?\")'>"." </td>";
echo "</tr>";
echo "</form>";//end form
} echo "</table>";
mysql_close();
?> <!-- End of php code-->
</div><!--close site_content-->
<footer>
<a href="test folder/index.html">Home</a> | <a href="test folder/ourwork.html">Photos</a> | <a href="test folder/testimonials.html">Videos</a> | <a href="test folder/projects.html">Schedule</a> | <a href="test folder/contact.html">Contact</a><br/><br/>
</footer>
</div><!--close main-->
</body>
</html>
添加信息后，将submit value =“Add Question”信息发送到quiz_created.php：
<?php
$username = "root";
$password = "";
$hostname = "localhost";
$database = "basketball_database";
$table = "coach_john";
$con = mysql_connect($hostname, $username, $password)
or die("Unable to connect to MYsql");
// echo "Connected to mysql<br>";
$db = mysql_select_db("$database")
or die("Could not select Basketball_database");
//echo "Connected to database";
$mysql = "INSERT INTO $table(question_description, quiz_name, option_a, option_b, option_c, answer) VALUES('$_POST[description]','$_POST[quiz_name]','$_POST[option1]','$_POST[option2]','$_POST[option3]','$_POST[dropdown]')";
if(!mysql_query($mysql))
echo mysql_errno($con) . ": " . mysql_error($con) . "\n";
//die("Disconnected");
$quiz=$_POST['quiz_name'];
//Upload images
if($_POST)
{
if ($_FILES["file"]["error"] > 0)
{
// if there is error in file uploading
echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
}
else
{
// check if file already exit in "images" folder.
if (file_exists("images/" . $_FILES["file"]["name"]))
{
echo $_FILES["file"]["name"] . " already exists. ";
}
else
{ //move_uploaded_file function will upload your image.
if(move_uploaded_file($_FILES["file"]["tmp_name"],"uploaded/" . $_FILES["file"]["name"]))
{
// If file has uploaded successfully, store its name in data base
$image_loc=addslashes (getcwd()."/uploaded"."/".$_FILES["file"]["name"]);
$query_image = "insert into $table (image, img_location) values ('".$_FILES['file']['name']."', '$image_loc')";
if(mysql_query($query_image))
{
echo "Stored in: " . "uploaded/" . $_FILES["file"]["name"];
}
else
{
echo 'File name not stored in database';
}
}
}
}
}
//end of image upload
mysql_close();
?>
<html>
<title>User Added</title>
<body>
<h2>
Question has been added!
</h2>
</body>
<form action="questions_menu(test).php" method="post">
<input type="submit" value="Add Another Question">
<input type="hidden" name="quiz_name" value='<?php echo $quiz;?>'>
</form>
</html>
然后最后发送回question_menu.php，但我得到一个Variable quiz_name undefined错误。 我希望我能得到帮助。谢谢。
答案 0 :(得分：0)
我发现很多问题，但有一个问题是你没有正确地转发你的php插件。
echo "<td>"."<input type=text name=questionID size=5 value=".$records['question_id']." </td>";
应该是：
echo '<td><input type="text" name="questionID" size="5" value="'.$records['question_id'].'" /></td>';
你现在拥有它的方式，你正在使用echo的引号而没有值=＆＃34;＆＃34;。在整个代码中都可以看到这一点。不知道你在哪里获得你的$ records数组，但是你要弄清楚。
这些行也存在问题。
$UpdateQuery = "UPDATE $table SET question_description='$_POST[description]', option_a='$_POST[option1]', option_b='$_POST[option2]', option_c='$_POST[option3]', answer='$_POST[dropdown]', question_id='$_POST[questionID]' WHERE question_id='$_POST[hidden]'";
一个主要问题是您尝试将原始POST数据设置到数据库中。这是一个巨大的安全漏洞。其他问题，如你的其他PHP，与引号和双引号，分号等有关...阅读语法。你的整个剧本基本上都是错的。