PHP/MySQL - Delete Record
I'm trying to make an option to delete an account on my webpage. I can't seem to get the query to run...
This is the code I've been using.

    <?php 
	if (!$con)
		{
			die("<p class='info'>Cannot delete account. Try again later.</p>" . mysql_error());
		}
	$db_query=("DELETE FROM Persons WHERE username='???'");
	echo "Account deleted!"
		?>

Can anyone tell me if this code is correct, and if it is, what goes in ???. 
Thank you! :-)
PHP/MySQL - Delete Record
===

I'm trying to make an option to delete an account on my webpage. I can't seem to get the query to run...
This is the code I've been using.

    <?php 
	if (!$con)
		{
			die("<p class='info'>Cannot delete account. Try again later.</p>" . mysql_error());
		}
	$db_query=("DELETE FROM Persons WHERE username='???'");
	echo "Account deleted!"
		?>

Can anyone tell me if this code is correct, and if it is, what goes in ???. 
Thank you! :-)