条件逻辑形式验证

Question

I'm having some issues writing logic for a script. I can't seem to wrap my head around it.

I have a form that contains 6 quantity fields, and two corresponding check boxes for each quantity field.

Quantity fields are referenced in variables $q1, $q2, $q3, $q4, $q5, $q6. Check boxes are referenced in variables $c1_1, $c1_2, $c2_1, $c2_2... etc.

The logic I want to achieve is, if you input a number into a quantity field, either one of the two corresponding checkboxes must be checked as well or the form invalidates.

My current code looks like this:

if(
   ($q1 !== "" && ($c1_1 == "" || $c1_2 == "")) ||
   ($q2 !== "" && ($c2_1 == "" || $c2_2 == "")) ||
   ($q3 !== "" && ($c3_1 == "" || $c3_2 == "")) ||
   ($q4 !== "" && ($c4_1 == "" || $c4_2 == "")) ||
   ($q5 !== "" && ($c5_1 == "" || $c5_2 == "")) ||
   ($q6 !== "" && ($c6_1 == "" || $c6_2 == ""))
) {
   $is_valid = false;
} else {
   $is_valid = true;
}

What's wrong with that code is that when I go to test that script, it requires both checkboxes to be checked to validate.

Answer 1

If I understood correctly, you want to invalidate if you meet one of this:

• a field is empty
• both checkboxes (belonging to a field) are unchecked

so it would be

if(
   ($q1 !== "" && ($c1_1 == "" && $c1_2 == "")) ||
   ($q2 !== "" && ($c2_1 == "" && $c2_2 == "")) ||
   ($q3 !== "" && ($c3_1 == "" && $c3_2 == "")) ||
   ($q4 !== "" && ($c4_1 == "" && $c4_2 == "")) ||
   ($q5 !== "" && ($c5_1 == "" && $c5_2 == "")) ||
   ($q6 !== "" && ($c6_1 == "" && $c6_2 == ""))
) {
   $is_valid = false;
} else {
   $is_valid = true;
}

with or without the inner ().

haven't tried myself, but should work.