// Count total number of elements in an array using an iterative function
function arrElementCounter($vr) {
  $totCnt = 0;
  foreach($vr as $vrVv) {
    if(!empty($vrVv) && is_array($vrVv)) {
      $totCnt += iter8r($vrVv);
    } else {
      $totCnt++;
    }
  }
  return $totCnt;
}

// Test the function output by passing an array
echo arrElementCounter($_POST);