处理HTML表单复选框数据并在PHP中发送邮件的教程

<fieldset>
    <legend>选择您的兴趣：</legend>
    <input type="checkbox" name="interests[]" value="Workout" id="workout" /><label for="workout">健身</label><br />
    <input type="checkbox" name="interests[]" value="Practice" id="practice" /><label for="practice">练习</label><br />
    <input type="checkbox" name="interests[]" value="Training" id="training" /><label for="training">训练</label><br />
</fieldset>

<?php

// 假设其他字段也已通过 $_POST 获取
$field_full_name = isset($_POST['names']) ? $_POST['names'] : '';
$field_email = isset($_POST['email']) ? $_POST['email'] : ''; // 假设有一个email字段

$field_interests = [];
if (isset($_POST['interests']) && is_array($_POST['interests'])) {
    $field_interests = $_POST['interests'];
}

// ... 后续处理
?>

<?php
// ... (前一部分代码)

$interests_string = '无'; // 默认值，当用户未选择任何兴趣时
if (count($field_interests) > 0) {
    $interests_string = implode(', ', $field_interests); // 用逗号和空格分隔
}

// ... 后续处理
?>

<?php
// ... (前一部分代码)

$mail_to = 'recipient@example.com'; // 替换为实际收件人邮箱
$subject = '来自访客的消息：' . htmlentities($field_full_name, ENT_QUOTES, 'UTF-8');

// 构建邮件正文
$body_message = sprintf('发件人: %s' . PHP_EOL, htmlentities($field_full_name, ENT_QUOTES, 'UTF-8'));
$body_message .= sprintf('邮箱: %s' . PHP_EOL, htmlentities($field_email, ENT_QUOTES, 'UTF-8'));
$body_message .= sprintf('兴趣: %s' . PHP_EOL, htmlentities($interests_string, ENT_QUOTES, 'UTF-8'));
// 可以添加更多字段

// 设置邮件头
$headers = 'From: ' . htmlentities($field_email, ENT_QUOTES, 'UTF-8') . "\r\n";
$headers .= 'Reply-To: ' . htmlentities($field_email, ENT_QUOTES, 'UTF-8') . "\r\n";
$headers .= 'X-Mailer: PHP/' . phpversion(); // 建议添加，便于调试

// 发送邮件
$mail_status = mail($mail_to, $subject, $body_message, $headers);

if ($mail_status) {
    // 邮件发送成功
    echo "<script language='javascript' type='text/javascript'>window.location = 'success.html';</script>";
} else {
    // 邮件发送失败
    echo "<script language='javascript' type='text/javascript'>alert('邮件发送失败，请稍后再试。'); window.location = 'error.html';</script>";
}
?>

<?php

// 1. 获取并净化用户输入
$field_full_name = isset($_POST['names']) ? htmlentities($_POST['names'], ENT_QUOTES, 'UTF-8') : '';
$field_email = isset($_POST['email']) ? htmlentities($_POST['email'], ENT_QUOTES, 'UTF-8') : '';

// 2. 处理复选框数组
$field_interests_raw = [];
if (isset($_POST['interests']) && is_array($_POST['interests'])) {
    $field_interests_raw = $_POST['interests'];
}

// 净化复选框的每个值，并转换为字符串
$field_interests_purified = array_map(function($item) {
    return htmlentities($item, ENT_QUOTES, 'UTF-8');
}, $field_interests_raw);

$interests_string = '无';
if (count($field_interests_purified) > 0) {
    $interests_string = implode(', ', $field_interests_purified);
}

// 3. 配置邮件参数
$mail_to = 'recipient@example.com'; // 替换为您的收件邮箱
$subject = '来自网站访客的消息：' . $field_full_name;

// 4. 构建邮件正文
$body_message = sprintf('发件人: %s' . PHP_EOL, $field_full_name);
$body_message .= sprintf('邮箱: %s' . PHP_EOL, $field_email);
$body_message .= sprintf('兴趣: %s' . PHP_EOL, $interests_string);
$body_message .= PHP_EOL . '此邮件由网站表单自动发送。';

// 5. 设置邮件头
$headers = 'From: ' . $field_email . "\r\n";
$headers .= 'Reply-To: ' . $field_email . "\r\n";
$headers .= 'X-Mailer: PHP/' . phpversion() . "\r\n";
$headers .= 'Content-Type: text/plain; charset=UTF-8' . "\r\n"; // 明确指定邮件内容类型和编码

// 6. 发送邮件并处理结果
$mail_status = mail($mail_to, $subject, $body_message, $headers);

if ($mail_status) {
    // 邮件发送成功，重定向到成功页面
    echo "<script language='javascript' type='text/javascript'>window.location = 'success.html';</script>";
} else {
    // 邮件发送失败，重定向到错误页面或显示错误信息
    echo "<script language='javascript' type='text/javascript'>alert('邮件发送失败，请稍后再试。'); window.location = 'error.html';</script>";
}
exit; // 确保在重定向后脚本停止执行
?>