MethodCallback.php

<?php

class MethodCallback {
  public static function staticCallback() {
    $args = func_get_args();
    if ($args == array(
      'foo',
      'bar',
    )) {
      return 'pass';
    }
  }
  public function nonStaticCallback() {
    $args = func_get_args();
    if ($args == array(
      'foo',
      'bar',
    )) {
      return 'pass';
    }
  }

}