Parse error: syntax error, unexpected T_RETURN

[phpboyhelp]

I keep getting this error:

Parse error: syntax error, unexpected T_RETURN in H:\p3t\phpappfolder\public_php\project\addcustomer.php on line 12

Can anyone help me to fix it

Here is the full php code

<?php

		define ("USER", "p04294726");
		define ("PASSWORD", "tInny=29");        	
		define ("HOST", "mysql.cs07.cse.dmu.ac.uk");
    	define ("PORT", "3306");
		define ("DATABASE", "cottage");


		$connection = mysqli_connect (HOST, USER, PASSWORD, DATABASE, PORT);

		return true;

		define ("QUERY", "INSERT INTO customers (title, forename, surname, addressone, addresstwo, city, postcode, phone, email, username, password) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,)");

		$title = $_POST[title];
		$forename = $_POST[name];
    	        $surname = $_POST[surname];
		$addressone = $_POST[firstadd];
		$addresstwo= $_POST[secondadd];
		$city = $_POST[city];
		$postcode = $_POST[postcode];
    	        $phone = $_POST[phone];
		$email = $_POST[email];
		$username = $_POST[user];
		$password = $_POST[password];

	$statement = mysqli_prepare($connection, QUERY);

	mysqli_stmt_bind_param($statement,
		            "sssssssisss",   
					$_POST[title],
					$_POST[name],
					$_POST[surname],
					$_POST[firstadd],
					$_POST[secondadd],
					$_POST[city],
					$_POST[postcode],
					$_POST[phone],
					$_POST[email],
					$_POST[user],
					$_POST[password]);

	mysqli_stmt_execute($statement);


	switch(mysqli_stmt_errno($statement))
	{
		case 0:
				 $addcottageComplete = true;
		     	        $addcottageOutcomeMessage = "Customer " .                      $_POST[name] . " added";
			 break;

		default:
				$addcottageComplete = true;
		    	$addcottageOutcomeMessage = mysqli_stmt_error($statement);
		}

		echo $addcottageOutcomeMessage;

		include ("index.html");

		mysqli_stmt_close($statement);

		mysqli_close($connection);
		?>