Textarea PHP帖子问题

Question

I have a PHP post problem with a textarea. I've searched this site, and the suggested remedies involved pulling the textarea's ID, and making sure you are using htmlspecialchars. I'm doing both, and I still can't figure out why it won't post the contents of my textarea.

HTML

<form method="post" action="email.php" name="contactform" id="contactform" class="form form-stacked c-form">
<input name="name" type="text" id="name" placeholder="Name" />
<input name="email" type="text" id="email" placeholder="E-mail" />
<textarea name="theTextArea" placeholder="Message"></textarea>
<input type="submit" class="submit btn outline" id="submit" value="Send message" />
</form>

PHP

$realName = $name = $theMessage = $subject = $WHATmessage = "";

if ($_SERVER["REQUEST_METHOD"] == "POST") {
  $realName = test_input($_POST["name"]);
  $name = test_input($_POST["email"]);
  $theMessage = test_input($_POST["theTextArea"]);
}
function test_input($data) {
  $data = trim($data);
  $data = stripslashes($data);
  $data = htmlspecialchars($data);
  return $data;
}

$subject = 'SUPERGROUP Inquiry - ' . $realName . ' - [' .date("F j, Y, g:i a").']';
$WHATmessage = $realName . ' is looking forward to hearing from us!'.PHP_EOL.'Their email is: '. $name .'!'.PHP_EOL.'They said: "'.$theMessage.'"';
mail('[e-mail]', $subject, $WHATmessage ); 

Answer 1

Posting comment as answer, as it appears to have worked.

Have you tried all of this with single quotes rather than the double quotes you have there? PHP can be funny about that.