Question

I have a Drupal form array that uses a prefix of ‘#’ to indicate that a given array key contains metadata instead of actual values. How can I loop through all array elements except those whose keys begin with ‘#’?

Answer 1

You can use continue to skip to the next iteration in your loop when the current key starts with a #. One way to get the first character is using substr().

foreach ($array as $key => $value) {
    if (substr($key, 0, 1) === '#') continue;
    //do stuff
}