Test of test v0.2

ArrayHelperInterface.php

$array = array('_0' => 0);

$array = new ArrayHelper($array);

$func = function ($key, $value, ArrayHelperInterface $array) {
    static $i;
    $i++;
    $c = count($array);
    if (is_string($key) && $c < $value) {
        unset($array[$key]);
        return true;
    } else {
        $array['_'.$i] = --$c;
        return false;
    }
};

$array->each($func);

var_dump(iterator_to_array($array));
/*
 array(2) {
  '_0' =>
  int(0)
  '_1' =>
  int(0)
 }
*/

$array->some($func);

var_dump(iterator_to_array($array));
/*
array(4) {
    '_0' =>
  int(0)
  '_1' =>
  int(0)
  '_2' =>
  int(1)
  '_3' =>
  int(2)
}
*/

$array->every($func);

var_dump(iterator_to_array($array));

/*
 array(5) {
  '_0' =>
  int(0)
  '_1' =>
  int(0)
  '_2' =>
  int(1)
  '_3' =>
  int(2)
  '_4' =>
  int(3)
}
*/