The biggest problem with error tracking, is that you get information about the effect and not the cause.
<?php
// generic database query wrapper
function query_wrapper($query)
{
$r = mysql_query($query)
or trigger_error(mysql_error(), E_USER_ERROR);
return $r;
}
// fetch message based on a numeric identifier
function get_message($id)
{
$result = query_wrapper("SELECT * FROM msg WHERE id=".$id);
return fetch_object_wrapper($result);
}
// main code
// Use pecl/filter to avoid sql injection here
$message = get_message($_GET['id']);
?>
