FiveYellowMice/question-box.php

## question-box.php
<?php

function return_error($code, $message) {
  http_response_code($code);
  header('Content-Type: text/plain');
  echo $message."\n";
  die();
}

if (in_array($_SERVER['REQUEST_METHOD'], ['HEAD', 'GET'])) {
  $alert_type = null;
  $alert_msg = null;
} elseif ($_SERVER['REQUEST_METHOD'] == 'POST') {
  if (strlen($_POST['question'] ?? null) == 0) {
    http_response_code(400);
    $alert_type = 'danger';
    $alert_msg = "提问不能为空。";
  } elseif (strlen($_POST['question']) > 500) {
    http_response_code(400);
    $alert_type = 'danger';
    $alert_msg = "提问不能超过 500 个字符。";
  } elseif (strlen($_POST['email'] ?? null) > 100) {
    http_response_code(400);
    $alert_type = 'danger';
    $alert_msg = "OAO 真、真的有这样长的邮件地址嘛。";
  } else {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_URL, 'https://api.telegram.org/bot<token>/sendMessage');
    curl_setopt($ch, CURLOPT_HTTPHEADER, [ 'Content-Type: application/json; charset=utf-8' ]);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
      'chat_id' => 123020835,
      'text' => "提问箱：\n".$_POST['question']."\n\nEmail: ".($_POST['email'] ?? ''),
      'disable_web_page_preview' => true,
    ]));
    $tg_resp = json_decode(curl_exec($ch), true);
    curl_close($ch);
    if ($tg_resp['ok'] ?? null) {
      $alert_type = 'success';
      $alert_msg = "发送成功。";
      $_POST['question'] = null;
      $_POST['email'] = null;
    } else {
      http_response_code(500);
      $alert_type = 'danger';
      $alert_msg = "发送失败。 ".($tg_resp['description'] ?? 'unknown');
    }
  }
} else {
  return_error(405, 'Method not allowed.');
}

?><!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>提问箱</title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
  </head>
  <body>
    <header class="pt-4 pb-1 px-2 bg-secondary text-light">
      <h1 class="text-center">提问箱</h1>
    </header>
    <div class="my-4 mx-auto px-2" style="max-width: 700px">
      <?php if ($alert_type) { ?>
      <div class="alert alert-<?= $alert_type ?>" role="alert"><?= $alert_msg ?></div>
      <?php } ?>
      <p>这里是 FiveYellowMice 的提问箱，在这里可以匿名地向我提出问题，我愿意回答的话，就会回答啦。也不一定是问题，要是有想匿名说的话，在这里也可以发出。如果有被回答的话，该提问将与回答一起被发布到我的 <a href="https://twitter.com/FiveYellowMice" target="_blank">Twitter</a> 和 <a href="https://mastodon.xyz/@FiveYellowMice" target="_blank">Mastodon</a> 上。</p>
      <p>如果担心 IP 地址被记录什么的，用代理之类的东西就可以了。</p>
      <form method="post">
        <div class="form-group">
          <label for="form-question">提问：</label>
          <textarea id="form-question" name="question" class="form-control" rows="2"><?= htmlspecialchars($_POST['question'] ?? '') ?></textarea>
        </div>
        <div class="form-group">
          <label for="form-email">邮件地址（选填）：</label>
          <input id="form-email" name="email" type="email" class="form-control" aria-describedby="form-email-description" value="<?= htmlspecialchars($_POST['email'] ?? '') ?>">
          <small id="form-email-description" class="form-text">若填写了邮件地址，在提问收到回答时将会收到邮件提醒，但我也会看到邮件地址，所以匿名大概就会被破坏了。</small>
        </div>
        <button type="submit" class="btn btn-primary d-block mx-auto">提交</button>
      </form>
    </div>
  </body>
</html>
	<?php

	function return_error($code, $message) {
	http_response_code($code);
	header('Content-Type: text/plain');
	echo $message."\n";
	die();
	}

	if (in_array($_SERVER['REQUEST_METHOD'], ['HEAD', 'GET'])) {
	$alert_type = null;
	$alert_msg = null;
	} elseif ($_SERVER['REQUEST_METHOD'] == 'POST') {
	if (strlen($_POST['question'] ?? null) == 0) {
	http_response_code(400);
	$alert_type = 'danger';
	$alert_msg = "提问不能为空。";
	} elseif (strlen($_POST['question']) > 500) {
	http_response_code(400);
	$alert_type = 'danger';
	$alert_msg = "提问不能超过 500 个字符。";
	} elseif (strlen($_POST['email'] ?? null) > 100) {
	http_response_code(400);
	$alert_type = 'danger';
	$alert_msg = "OAO 真、真的有这样长的邮件地址嘛。";
	} else {
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_POST, true);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_URL, 'https://api.telegram.org/bot<token>/sendMessage');
	curl_setopt($ch, CURLOPT_HTTPHEADER, [ 'Content-Type: application/json; charset=utf-8' ]);
	curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
	'chat_id' => 123020835,
	'text' => "提问箱：\n".$_POST['question']."\n\nEmail: ".($_POST['email'] ?? ''),
	'disable_web_page_preview' => true,
	]));
	$tg_resp = json_decode(curl_exec($ch), true);
	curl_close($ch);
	if ($tg_resp['ok'] ?? null) {
	$alert_type = 'success';
	$alert_msg = "发送成功。";
	$_POST['question'] = null;
	$_POST['email'] = null;
	} else {
	http_response_code(500);
	$alert_type = 'danger';
	$alert_msg = "发送失败。 ".($tg_resp['description'] ?? 'unknown');
	}
	}
	} else {
	return_error(405, 'Method not allowed.');
	}

	?><!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>提问箱</title>
	<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
	</head>
	<body>
	<header class="pt-4 pb-1 px-2 bg-secondary text-light">
	<h1 class="text-center">提问箱</h1>
	</header>
	<div class="my-4 mx-auto px-2" style="max-width: 700px">
	<?php if ($alert_type) { ?>
	<div class="alert alert-<?= $alert_type ?>" role="alert"><?= $alert_msg ?></div>
	<?php } ?>
	<p>这里是 FiveYellowMice 的提问箱，在这里可以匿名地向我提出问题，我愿意回答的话，就会回答啦。也不一定是问题，要是有想匿名说的话，在这里也可以发出。如果有被回答的话，该提问将与回答一起被发布到我的 <a href="https://twitter.com/FiveYellowMice" target="_blank">Twitter</a> 和 <a href="https://mastodon.xyz/@FiveYellowMice" target="_blank">Mastodon</a> 上。</p>
	<p>如果担心 IP 地址被记录什么的，用代理之类的东西就可以了。</p>
	<form method="post">
	<div class="form-group">
	<label for="form-question">提问：</label>
	<textarea id="form-question" name="question" class="form-control" rows="2"><?= htmlspecialchars($_POST['question'] ?? '') ?></textarea>
	</div>
	<div class="form-group">
	<label for="form-email">邮件地址（选填）：</label>
	<input id="form-email" name="email" type="email" class="form-control" aria-describedby="form-email-description" value="<?= htmlspecialchars($_POST['email'] ?? '') ?>">
	<small id="form-email-description" class="form-text">若填写了邮件地址，在提问收到回答时将会收到邮件提醒，但我也会看到邮件地址，所以匿名大概就会被破坏了。</small>
	</div>
	<button type="submit" class="btn btn-primary d-block mx-auto">提交</button>
	</form>
	</div>
	</body>
	</html>