Warning: Mysql_query(): Can't Connect To Local MySQL Server Through Socket '/tmp/mysql.sock' (2)

I'm trying to connect to my MySQL database (sitehosted by GoDaddy) using PHP. I am having these errors and don't understand what they mean

Warning: mysql_query(): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) in /home/content/n/l/a/nladmin/html/v5.0_3/c_register.php on line 6
Warning: mysql_query(): A link to the server could not be established in /home/content/n/l/a/nladmin/html/v5.0_3/c_register.php on line 6

Notice: Query: SELECT * FROM types MySQL error: Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) in /home/content/n/l/a/nladmin/html/v5.0_3/c_register.php on line 6
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Warning: mysql_close(): no MySQL-Link resource supplied in /home/content/n/l/a/nladmin/html/v5.0_3/c_register.php on line 13

I've checked paths and connection settings and don't see any problems. My guess is now that the problem is coming from the opening and closing of the DB. my script, c_register.php uses a require_once('../mysql_connect.php') to open the connection to the database. But I also have a function definition in c_register.php that uses require_once('../mysql_connect.php') when called because it needs a connection to the DB. Here's a visual that might help: