Question

I have an array with keys from 0 to n, and i need to exclude the following pattern of keys with continue when the array is iterated:

3,4,8,9,13,14,18,19…

The problem is that i need some kind of formula so that the pattern is not limited only to the numbers above.

Answer 1

$exclude = array(3,4,8,9,13,14,18,19);
foreach ( $inputArray as $key => $value ) {
  if ( in_array($key, $exclude) ) {
    continue;
  }

  // do something
}