funcPHP::TailHead

traverse-array-recursion.php

<?php

  $head = function($a) {
    return array_shift($a);
  };

  $tail = function($a) {
    $first = array_shift($a);
    return $a;
  };


  $loop = function($a) use (&$loop, $head, $tail){
    if (!empty($head($a))){
      print($head($a));
      $loop($tail($a));
    }
  };

  $loop([1,2,3,4,5]);