Question

In PHP + MySQL

This is:

$conn = mysql_connect("server","user","pass");
mysql_select_db("datbasename");

what we do to open a connection.

And this is:

mysql_close($conn);

what we do to close the connection.

• WHAT if we don’t close the connections? What are going to be the effects?
• After what CONDITION the opened connections are automatically closed?

Answer 1

From the PHP documentation for mysql_close:

Using mysql_close() isn’t usually necessary, as non-persistent open links are automatically closed at the end of the script’s execution. See also freeing resources.