Question

beginner PHP programmer here trying to use the mailchimp API…

I keep getting this PHP error with regard to my first line of code here…. I am posting a value from a form, as you can see, but I am not sure what is going on.

The error:
Warning: Variable passed to each() is not an array or object in xxxxxxx on line 24 (which is the first line)

while (list($key, $val) = each($_POST['MCgroup'])) {
        $interest .= ($count>0 ? ", " : "");
        $interest .= $val;
        $count++;
    }

    echo $interest; //echos NOTHINGblank
    $mergeVars = array(
                       'INTERESTS'=>$interest
                        );

    echo $mergeVars; //echos the word ARRAY

From what I have researched, OBVIOUSLY I am not passing an actual ARRAY… but also from what I have found, my syntax all seems correct. (But I could be overlooking something).

Here is the part of the form code that is passing the values

 <input type="hidden" name="MCgroup" id="MCgroup" value="My Interest One" />
 <input type="hidden" name="MCgroup" id="MCgroup" value="My Interest Two" />

or I COULD change it to

<input type="hidden" name="MCgroup" id="MCgroup" value="My Interest One, My Interest Two" />

I just am not sure how to make THAT into an array.

Help please! Thanks!

Answer 1

You can set your <input> to have an array name by suffixing [], do something like this:

<input type="hidden" name="MCgroup[]" id="MCgroup" value="My Interest One" />
<input type="hidden" name="MCgroup[]" id="MCgroup" value="My Interest Two" />

then check it by:

print_r($_POST['MCgroup']);

Where I assume you set form method to POST.