I always store database handler in $GLOBALS.
I think that's the best place to save request-level-global.
I wonder where other people save that kind of data.
how about a static variable inside a function or a static member of a class.
e.g.
function getDB($args) {
static $conn = array();
$key = serialize($args);
if (!isset($conn[ $key ])
$conn[ $key ] = new DBConn($args);
return $conn[ $key ];
}
That's surprisingly similar to how I do it. Then it's a simple matter to call getDB() (which you can do no matter what the current scope is) to get the database object.
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