checking form fields

[peppino]

😕 i have a form that contains some fields that either all or none need to be filled in. these fields are optional, but if someone fills in one of them they need to fill in the remaining two.

form fields are:
field1
field2
field3

how can i have it so that the user must type in either all fields or fill none of them in?

thanks!!

[bogu]

Use javascript to validate your fields ...

[stewartship]

when do any type of user input i always use:

<form action="<?php echo $_SERVER['PHP_SELF'];?>" method="post">

on the form, this way once user has submitted you can write a function or if, if elses etc. to confirm if the user has entered information if any and then direct accordingly.

hope this helps