RE: [PHP] checkbox arrays and validation

On 05 October 2004 11:10, Angelo Zanetti wrote: > Hi all, > > this might be slightly off-topic in a way but Im looking for help not > flaming. > > Ok I have a checkbox array that I populate from a DB using php: > > while ($row = mysql_fetch_array($result)) > echo("<input type=checkbox name=chkmodels[] value=" . > $row['models_id'] . ">" . $row['models_type'] . > "<br>"); > > So when I want to see each variable in the array I use: > > foreach ($_POST['chkmodels'] as $c) > { > echo("<br> value: " . $c); > } > > this is fine. > > but what I want to clarify is that if I change my PHP echo statement > to: > > echo("<input type=checkbox name=chkmodels value=" . $row['models_id'] > . ">" . $row['models_type'] . "<br>"); > > basically without the [] then it is still recognised as an array. But > when the array is passed back it is returned as a string separated by > commas. No, this is incorrect. You will see only the last value selected, returned as a simple scalar. PHP doesn't do automatic array-ification of multiple values -- that's why you need the [] in the name attribute. Cheers! Mike --------------------------------------------------------------------- Mike Ford, Electronic Information Services Adviser, Learning Support Services, Learning & Information Services, JG125, James Graham Building, Leeds Metropolitan University, Headingley Campus, LEEDS, LS6 3QS, United Kingdom Email: m.ford@leedsmet.ac.uk Tel: +44 113 283 2600 extn 4730 Fax: +44 113 283 3211