looping over field, keyword arrays to generate sql

Hey everyone, Was wondering if anyone could point me to a algorithm to loop through two arrays one being a list of keywords and the other a list of field names to generate part of an sql statement like: $sql .= $field " LIKE '%" . $word . "%' OR " Have looked at many search scripts and classes but none really have this part the way I would like it thought maybe someone may alreday have this or could point me to a good example? Any help appreciated, Regards, Joseph Blythe