PHP/PDO: use simple prepared statement with query return/affected rows?

[xblackwfos]

I am new to PDO objects and cannot find a single piece of documentation that will help me. Say I got a simple code to delete a row:\[code\]$count = $dbh->exec("DELETE FROM fruit WHERE colour = 'red'");\[/code\]That will return affected rows, but how would I use prepared statements with that? Can use use \[code\]$dbh->prepare\[/code\] AND \[code\]$dbh->exec\[/code\] or query !?