source: wiki.hashphp.org/PDO_Tutorial_for_MySQL_Developers
<?php
try {
$id = "5";
$stmt = $db->prepare("DELETE FROM table WHERE id=:id");
$stmt->bindValue(':id', $id, PDO::PARAM_STR);
$stmt->execute();
$affected_rows = $stmt->rowCount();
} catch(PDOException $ex) {
echo "An Error occured!";
// echo "\nPDO::errorInfo():\n";
// print_r($dbh->errorInfo());
}