How to write a simple online questionnaire system through PHP
How to write a simple online questionnaire system through PHP
Introduction:
Online questionnaire system plays an important role in modern data collection and market research character of. In this article, we will learn how to write a simple online questionnaire system using PHP to collect user feedback and data. We will involve the creation and design of the database, the design of the front-end interface, and the writing of back-end PHP code. let's start!
Step One: Database Design
First, we need to create a database to store the data of the questionnaire system. We can use MySQL as the database management system. The following is a simple database design example:
- Create a database named "surveys"
- Create a table named "questions" in the "surveys" database, using Data for storage issues. The table can contain fields: id, question, type, etc.
- Create a table named "answers" in the "surveys" database to store the user's answer data. The table can contain fields: id, question_id, answer, etc.
Step 2: Front-end interface design
Next, we need to design a user-friendly front-end interface to display questions and collect User's answer. We can use HTML and CSS to create the front-end interface. The following is a simple sample code:
<!DOCTYPE html>
<html>
<head>
<title>调查问卷系统</title>
<style>
.question {
margin-bottom: 10px;
}
.submit-btn {
margin-top: 10px;
}
</style>
</head>
<body>
<h1 id="调查问卷">调查问卷</h1>
<form action="submit.php" method="post">
<?php
// 根据数据库中的问题数据，动态生成问题列表
$questions = [
[
'id' => 1,
'question' => '您对公司的产品是否满意？',
'type' => '单选',
'options' => ['非常满意', '满意', '一般', '不满意']
],
[
'id' => 2,
'question' => '您的年龄段是？',
'type' => '单选',
'options' => ['18-25岁', '26-35岁', '36-45岁', '45岁以上']
],
// 添加更多的问题...
];
foreach ($questions as $question) {
echo '<div class="question">';
echo '<label for="question-' . $question['id'] . '">' . $question['question'] . '</label><br>';
if ($question['type'] === '单选') {
foreach ($question['options'] as $option) {
echo '<input type="radio" name="question-' . $question['id'] . '" value="' . $option . '"> ' . $option . '<br>';
}
} elseif ($question['type'] === '多选') {
foreach ($question['options'] as $option) {
echo '<input type="checkbox" name="question-' . $question['id'] . '[]" value="' . $option . '"> ' . $option . '<br>';
}
} elseif ($question['type'] === '文本') {
echo '<textarea name="question-' . $question['id'] . '"></textarea>';
}
echo '</div>';
}
?>
<input type="submit" class="submit-btn" value="提交">
</form>
</body>
</html>Step 3: Back-end code writing
Finally, we need to write PHP code to process the data submitted by the front-end interface and save the data to the database. The following is a simple sample code:
<?php
// 获取问题和答案数据
$questions = [
['id' => 1, 'question' => '您对公司的产品是否满意？'],
['id' => 2, 'question' => '您的年龄段是？'],
// 添加更多的问题...
];
// 创建一个名为“surveys”的数据库连接
$servername = 'localhost';
$username = 'root';
$password = '';
$dbname = 'surveys';
$conn = new mysqli($servername, $username, $password, $dbname);
// 检查数据库连接是否成功
if ($conn->connect_error) {
die('数据库连接失败：' . $conn->connect_error);
}
// 处理提交的表单数据
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
foreach ($questions as $question) {
$questionId = $question['id'];
$answer = isset($_POST['question-' . $questionId]) ? $_POST['question-' . $questionId] : '';
// 将答案保存到数据库中的“answers”表
$sql = "INSERT INTO answers (question_id, answer) VALUES ('$questionId', '$answer')";
if ($conn->query($sql) !== TRUE) {
echo '保存数据时出错：' . $conn->error;
}
}
}
$conn->close();
?>Summary:
Through the above steps, we have learned how to use PHP to write a simple online questionnaire system. Use a database to store question and answer data, design a user-friendly front-end interface to display questions and collect answers, and use PHP code to process user-submitted data and save it to the database. I hope this article is helpful to you, and I wish you a successful online questionnaire system!
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