Re: [PHP-PEAR] RFC on merge of PHPLib and Pear

In netuse.lists.php-pear you write:
>class. Could I use a config file without re-writing phplib's DB_sql, or setting 
>the parameters manually after instantiating the object (ugly)? No.

 $db = new DB_Sql; // constructor will terminate immediately
 $db->Host = ...;
 $db->User = ...;
 $db->Password = ...;
 $db->Database = ...;
 $db->query(...);  // query() will detect that there is no connect
                   // and will call connect() automatically.

The DB_Sql standard constructor does not take connection
parameters, but a query instead, because that is much more
useful and conventient in a real deployment scenario: In the
context of a single real world application, you have changing
queries, but your connection parameters change rarely.

Thus, being able to write by default

	$db = new DB_mydatabase("select ..."); // connection parameters known implicitly by subclass

is much more useful as being to write

	$db = new DB_Sql("localhost", "wwwrun", "secret", "test_test");
	$db->query("...");

If you happen to have a scenario where you have need for the
latter, you could always subclass DB_Sql, overwrite the
constructor and use that derived class in the latter style.

Kristian