Submit email address and name to database

[abcde]

I'm looking for a code that allows me to submit email addresses and names to the database

i kinda wonder if this code can do it??

<?php
	include("database.php");
	$e = $_POST['email'];
	$n = $_POST['name'];

	
	if ($e == "" || $n == ""){
		header("location: ../submit.php");
		exit();
	}
	
	$q = mysql_query("SELECT id FROM email WHERE email = '$e' LIMIT 1")or die(mysql_error());
	if ($n = mysql_num_rows($q)){
		echo "already exists";
		exit();
		header("location: ../submit.php");
		
	}
	echo $n;
	exit();

	mysql_query("INSERT INTO email VALUES(null, '$e', '$n', 0)")or die(mysql_error());
	
	header("location: ../Index.php?success=added");
	
?>