A snippet of how to check for the last element of the array and perform actions on to it.

check_last_element.php

/**
 * Check if the current array element is the last one, if it is, do something.
*/

$array = array('a' => 1,'b' => 2,'c' => 3);
$lastElement = end($array);
foreach($array as $k => $v) {
  echo $v . '<br/>';
  if($v == $lastElement) {
    // This is the last element. Do as you please.
  }
}