Question

I hope this question isn’t too simple, I tried to go through the postgresql and mysql php pages, but I didn’t understand quite that well.

If you use PHP with MySQL, you can do something like this:

$_connectionID = @mysql_connect(
        $dbConnectionConfig['host'],
        $dbConnectionConfig['user'],
        $dbConnectionConfig['pass'],
        true
    );
@mysql_select_db($dbName, $_connectionID);

Uhmm, two quick questions:

1. What’s the point of doing the above? Why not just do everything at once with mysql_pconnect?

2. What does the true in mysql_connect do? Does it just allow you to have multiple database connections open at the same time?

Now, how would you go and do this in PostgreSQL? I know about pg_connect, but that requires a db name to be specified, so, it’s more of an equivalent to mysql_pconnect. Also, I know that the @ in the mysql php syntax basically hides the errors in case of failure. Does the @ work for postgres as well?

Thanks for your time, have a good day.

Answer 1

1. No reason not to
2. You do not need the true
   • The true is only needed if it is a new connection link and you have already made a link before.
3. Remove the @ symbols because they block any PHP warnings that may come up