Question

i have this code. Basically identifies if any position of array is empty or have an input equal a zero.

$fields = array("first", "second", "third");

function check($fields, $form) {
    foreach($fields as $field) {
        if(empty($form[$field]) || $form[$field] === 0) {
            echo 'empty';
            return false;
            break;
        }
    }
}

My doubt now, is , how i can do an echo for example to show the second position is empty?

with an if? if ($form[$field][second]) ? i don’t know if this is correct, or exists a better option
thanks

Answer 1

if $field is what you want to echo then just prepend it to ‘is empty’:

$fields = array("first", "second", "third");

function check($fields, $form)
{
    foreach($fields as $field)
    {
        if(empty($form[$field]))
        {
            echo $field.' is empty';
            return false;
        }
    }
}

if you need the index value:

$fields = array("first", "second", "third");

function check($fields, $form)
{
    foreach($fields as $k=>$field)
    {
        if(empty($form[$field]))
        {
            echo $k.' is empty';
            return false;
        }
    }
}

eventually if the aim is retrieve the empty position (if check returns -1 then there are no empty positions):

$fields = array("first", "second", "third");
function check($fields, $form)
{
    foreach($fields as $k=>$field)
    {
        if(empty($form[$field]))
            return $k;
    }
    return -1;
}