Error messages?

[RockItTonite]

Hello all! I'm fairly new here, so apologies if I'm posting in the wrong place.

I'm just starting to code in PHP and currently am coding a page for my bass guitar tutorial website. This particular page is a song request form, where users can fill out a song they would like to see turned into a video tutorial. I am just about to go punch a wall because of all the error messages I keep receiving. I fix one, and then another occurs, and so on.

Here's a screenshot of the current error I am receiving:
[ATTACH]5201[/ATTACH]

I'm not sure why I am getting these errors, I believe everything is defined as a variable...

Here is my current code:

<?php
	$to = '[e-mail]';
	$subject = 'Song Request';
	$message = $name . " " . $email . " " . $song . " " . $artist . " " ;
	$headers .= 'To: Amanda <[e-mail]';

mail($to, $subject, $message, $headers);

$nameErr = $emailErr = $songErr = $artistErr = "";
$name = $email = $song = $artist = $comment = "";

if ($_SERVER["REQUEST_METHOD"] == "POST") {
	if (empty($_POST["name"])) {
		$nameErr = "Name is required.";
	}
	else {
		$name = test_input($_POST["name"]);
	}

	if (empty($_POST["email"])) {
		$emailErr = "Email is required.";
	}
	else {
		$email = test_input($_POST["email"]);
	}

	if (empty($_POST["song"])) {
		$songErr = "A song is required.";
	}
	else {
		$song = test_input($_POST["song"]);
	}

	if (empty($_POST["artist"])) {
		$artistErr = "An artist or band is required.";
	}
	else {
		$artist = test_input($_POST["artist"]);
	}

	if (empty($_POST["comment"])) {
    	$comment = "";
  	} 
  	else {
   	 	$comment = test_input($_POST["comment"]);
 	}
}

?>

<center><form method= "post" action=<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>>

Name: <input type = "text" name= "name">
	<span class= "error">* <?php echo $nameErr;?></span> <br><br>
Email: <input type = "text" name= "email">
	<span class= "error">* <?php echo $emailErr;?></span> <br><br>
Song: <input type = "song" name= "song">
	<span class="error">* <?php echo $songErr;?></span> <br><br>
Artist: <input type = "artist" name="artist">
	<span class="error">* <?php echo $artistErr;?></span> <br><br>
Comment: <textarea name="comment" rows="3" cols="20"></textarea> <br><br>
<input type ="submit" name="submit" value="Submit"> <br><br>

</form></center>

Any help would be great! Like I said, I am new to this, so it's most likely a rookie mistake, haha.

error.png

[laserlight]

Basically, you used $name here:

$message = $name . " " . $email . " " . $song . " " . $artist . " " ;

But you only set $name later in your code, if it is set at all:

$name = test_input($_POST["name"]);

What you need to do is to restructure your code such that you only use $name (and call the mail function) after you have processed the incoming variables like $_POST["name"] and found that there were no errors.

[dalecosp]

To elaborate a bit, maybe (?) --- it looks like you're sending the e-mail (first 8 lines of code, more/less) before you validate the form which was submitted to allow the user to send the email ...