Description:
------------
I'm not sure if it's a error in the docs or a PDO bug. http://
www.php.net/manual/en/function.pdostatement-rowcount.php says, 
"PDOStatement::rowCount() returns the number of rows affected 
by the last DELETE, INSERT, or UPDATE statement executed by 
the corresponding PDOStatement object." When I execute my code 
sample, $stmt->rowCount() always returns int(0) instead of the 
expected int(1).

Some lines down the page, the docs say that rowCount() doesn't 
work on a SELECT with the most databases, but there's no 
exception for INSERT, UPDATE or DELETE.

Reproduce code:
---------------
<?php

try {
	$db = new PDO("sqlite:/tmp/sqlite.sdb");
	$stmt = $db->prepare("INSERT INTO test ( name ) VALUES ( :name ) ");
	$stmt->bindParam(':name', $name);
	$name = 'Andreas';
	$stmt->execute();
	var_dump($stmt->rowCount());
	$last_insert_id = $db->lastInsertId();
	$stmt = $db->prepare("UPDATE test SET name = :name ");
	$stmt->bindParam(':name', $name);
	$name = 'Peter';
	$stmt->execute();
	var_dump($stmt->rowCount());
	$stmt = $db->prepare("DELETE FROM test");
	$stmt->execute();
	var_dump($stmt->rowCount());
} catch (Exception $e) {
	echo $e->getMessage();	
}

?>

Expected result:
----------------
int(1)
int(1)
int(1)

Actual result:
--------------
int(0)
int(0)
int(0)