I have an HTML form with a hundred or so elements on it, used for searching a database. When the user submits the form (via GET) the URL is loaded with ALL of these fields, and many of them are not even actually used in the search criteria. https://mypse/dart2/ps_search.php?enter_date=2009-11-30&id_incident=&incide nt_date=&incident_hh=0&incident_mm=0&id_urgency_level=0&problem_description =&immediate_action=&unit_opened=&unit_authorized=&customer=&customer_contac t=&customer_address=&customer_country=&id_location=0&passengers_onboard=&su bmit=Search&part_number=&serial_number=&nomenclature=&manufacture_date=&mod _level=&id_lru_condition=&repair_history=&ac_type=&tail_number=&id_system_t ype=&id_lru_location=0&circuit_breaker=&circuit_breaker_amps=&seat_number=& seat_vendor=&seat_column_zone=&seat_zone=&tc_holder=&stc_holder=&asr_mor=&i mpounded=&id_authority=&id_region=&reported_by=&prepared_by=&preparer_locat ion=&field_engineer=&id_attach_pictures=&id_attach_mlr=&id_attach_lopa=&cab in_log=&parts_inspect=&id_organization=0&id_quality_engineer=0&car_number=& close_date=&closed_by=&qa_comment=&id_priority=&id_action=0&id_incident_sta tus=3&id_failure_type=&detail_status=&investigation_result=&osaka_action=&o saka_request=&newvsrepeat=&related_incident=&unit_received_date=&unit_retur ned_date=&tdr_to_pso_date=&tdr_date=&dcr_date=&dcr_reference_number=&ecr_da te=&ecr_reference_number=&eco_date=&eco_reference_number=&service_bulletin_ date=&sb_reference_number=&sil_issue_date=&sil_reference_number=&til_issue_ date=&til_reference_number=&customer_letter_issue_date=&subassembly=&rdm=&p svector=&oemmanuf=&defective_part_1=&defective_part_2=&defective_part_3=&de fective_part_4= Is there some way via PHP/Apache Mod/Javascript to remove all the keys that don't have any value in them and just distill this down to the elements/keys that the user actually entered some input for? ie. defaulting all the rest to 'blank'. In PHP, this would look something like this: foreach ($_GET as $k => $v) if ($v == '') unset($_GET[$k]); The problem as I see it, is that this "magic" happens when the user hits "Submit", so not sure PHP has any way to intercept at that point. Javascript might be able to do something on the "onClick" event or "onSubmit" I suspect. But this seems like something that someone should have solved before and common enough that I would think Apache could handle it transparently with a directive or module enabled so I don't have to code some hack on every page. I guess I could always redirect to some 'scrubber' page that strips them out and redirects on to the refering page again, but that seems klunky. BTW, I want to use GET so that the page can be bookmarked for future searches of the same data (or modified easily with different dates, etc.), so that's why I don't use POST.
