An example which triggers the bug:

<?PHP
define('DB_CONNECT_STR', 'mysql://username:password@hostname/database');
require_once('DB.php');
$pearDB = DB::connect(DB_CONNECT_STR);
$pearDB->getAll('DELETE FROM test WHERE id=4');
/*
CREATE TABLE test (id int(11) default NULL); INSERT INTO test VALUES(4);
*/
?>

It looks we verify if the query is fine with DB::isError. and it looks a big problem with isError, it looks we thought it returns true on error but in fact it returns false...

Need feedback from cox/ssb please.

getAll checks for pear Error, however most databases just return DB_OK for update/alter queries.. so that check in getAll is incorrect.
I guess just adding 
if ($ret == DB_OK) {
   return DB_OK;
}

should fix it.
(similar comment in the postgres explain bug)

This bug has been fixed in CVS.

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