php echo htmlspecialchar post error - php

Question

Let me start by saying this is the first time I have touched php since college, and I am very limited in my knowledge. I followed a tutorial in order to implement a contact form on a bootstrap website for a client. Everything works except for the "message" field due to it being a textarea rather than an input. For testing I swapped the textarea with an input, and it worked fine. Is there another method of capturing the user entered text to post? It seems like something simple, but I have been struggling with it for hours, and can't seem to find a solution. I am using the following code for the message html:
<div class="form-group">
<label for="message" class="col-sm-2 control-label">Message</label>
<div class="col-sm-10">
<textarea class="form-control" rows="4" name="Enter Your Message" ><?php echo htmlspecialchars($_POST['message']);?></textarea>
<?php echo "<p class='text-danger'>$errMessage</p>";?>
</div>
</div>
This is the php I am using, and it results in displaying the error message 'Please enter your message'
if ($_POST["submit"]) {
$name = $_POST['name'];
$email = $_POST['email'];
$message = $_POST['message'];
$human = intval($_POST['human']);
$from = 'bot#dtosolutions.com';
$to = 'eric#ericbelldesigns.com';
$subject = 'Message from Contact Form';
$body ="From: $name\n E-mail: $email\n Message:\n $message";
//Check if name is entered
if (!$_POST['name']) {
$errName = 'Please enter your name';
}
//Check if email is valid
if (!$_POST['email'] || !filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)) {
$errEmail = 'Please enter a valid email';
}
//Check if a message is entered
if (!$_POST['message']) {
$errMessage = 'Please enter your message';
}
//Check if anti-bot test is correct
if ($human !== 7) {
$errHuman = 'Your anti-spam is incorrect';
}
// If there are no errors - send the email
if (!$errName && !$errEmail && !$errMessage && !$errHuman) {
if(mail ($to, $subject, $body, $from)) {
$result='<div class="alert alert-success">Thank You! I will be in touch</div>';
} else {
$result='<div class="alert alert-danger">Sorry there was an error sending your message.</div>';
}
}
}

Answer 1

It showing the error message Please Enter you Message because your message is not posting to your php script. According to your code you're checking the message in this line
if (!$_POST['message']) {
$errMessage = 'Please enter your message';
}
but there are no input or textarea field named message. For posting your message to your php script you should change your textarea name Enter Your Message to message and then it will work perfectly.

Answer 2

I'm not sure why you want to print the message with <?php echo htmlspecialchars($_POST['message']);?>, but I see some possible problems here.
There is not an input with name message. The text area's name is
Enter Your Message. And name with spaces will be converted to
underscores in $_POST. That means you need to refer to
$_POST["Enter_Your_Message"].
I suggest you check if an input is filled before assign its value to a variable.