Question

I have several input fields and I want it to submit when there is only one field with entered values and the others are empty (updating user data). I worked by now with isset() but this only sends the form when every field is filledout:

if (isset
   ($_POST['submit']) AND 
   ($_POST['firstname']) AND 
   ($_POST['lastname']) AND 
   ($_POST['address']) AND 
   ($_POST['ZIP']) AND 
   ($_POST['phonenumber']) AND 
   ($_POST['mail']) AND 
   ($_POST['group'])
)

Later on I check in the mail template (another file) if there is a value and wheter to show it in the mail or not:

{if !empty($firstname)}{translate text='First Name'}: {$firstname|escape} {/if}

Is my idea ok or is there an easier way to solve this?

Answer 1

The first if statement is in conflict with your requirements; you are requiring all fields to be filled in by using the AND operation – use OR and it will work with any single field value.

Validation should/could also be performed on the page itself by using javascript as Matt recommends.

To ensure that only one field is set do the following you could count the number of entries in _POST

if(count($_POST) == 1 AND 
   (isset($_POST['submit']) OR 
    isset($_POST['firstname']) OR 
    isset($_POST['lastname']) OR 
    isset($_POST['address']) OR 
    isset($_POST['ZIP']) OR 
    isset($_POST['phonenumber']) OR 
    isset($_POST['mail']) OR 
    isset($_POST['group'])
   ))

Either way it’s not a very elegant way of doing this – but it will work.