Checking Empty Fields

[bjblackmore]

Hi,
I have a form, with a number of fields that I want to make sure are filled in. I have 2 text boxes, that corrispond to each other.

field_1 and field_a,
field_2 and field_b,
field_3 and field_c,
etc...

If '1' is filled in, then 'a' needs to be, and if '2' is, then 'b' needs to be, etc. However the number of fields will vary depending on the user. Some people will have 1 or 2 fields, some will have 20. I know I could just code
if ($field_1 && !field_b) {
feedback .= 'Error';
return false;
} else...
then do
if (field_2 && !$field_b) {
feedback .= 'Error';
return false;
} else...
and do it for field 3,4....20 etc, but it will make the coding huge, and if someone has only 4 fields, and the code is checking for field20 it will fail. Is there anyway I can just check the fields if they exist? Maybe something like
if (field[] && !field[]){
feedback .= 'Error';
return false
}....
Many Thanks
Ben

[amcgrath]

Assuming you know the number of questions displayed, then yea, your last idea shoudl work:

for ($x = 0; $x < $num_of_ques; $x😉 {

if (field[$x] && !field[$x]){
feedback .= 'Error';
break(2);
}
)

[bjblackmore]

Hi,
Thanks for replying to my question on phpbuilder. I was just wondering, when you say 'number of questions displayed' do you mean number of textboxs?
Basically, I have 2 textboxs per record. room_type, and room_code. However
different people will have different number of records.
Some will have
room_type1, room_code1
room_type2, room_code2
room_type3, room_code3

And some will just have
room_type1, room_code1

Some may have as many as 20. But each record is always made up of these 2 fields. Would your idea still work?
Cheers
Ben Blackmore