gistfile1.php

#!/usr/bin/php
<?php
  // define('FORMAT', 'jS F Y');
  // define('FORMAT', 'YYYY/mm/dd MMM M m mmm ddd j S EEEE');
  define('FORMAT', 'dd');
  define('LOCALE', 'nl_NL.UTF-8');

  $alpha = array('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'v', 'w', 'x', 'y', 'z');

  /**
   * a = AM/PM
   * ccc = do
   * cccc = donderdag
   * d = 23
   *
   */

  foreach($alpha as $c) {
    $format = '';
    for ($i = 0; $i <= 3; $i++) {
      $format .= $c;
      $old = date_format(new DateTime(), $format);

      $d = new IntlDateFormatter(
        LOCALE,
        IntlDateFormatter::FULL,
        IntlDateFormatter::FULL,
        date_default_timezone_get(),
        IntlDateFormatter::TRADITIONAL,
        $format);
      $new = $d->format(time());

      echo (($old != $new) ? "-- " :  "   ") . $format . "\t= " . $old . "\n";
      echo (($old != $new) ? "++ " :  "   ") . $format . "\t= " . $new . "\n";

      $furmat = strtoupper($format);
      $old = date_format(new DateTime(), $furmat);

      $d = new IntlDateFormatter(
        LOCALE,
        IntlDateFormatter::FULL,
        IntlDateFormatter::FULL,
        date_default_timezone_get(),
        IntlDateFormatter::TRADITIONAL,
        $furmat);
      $new = $d->format(time());

      echo (($old != $new) ? "-- " :  "   ") . $furmat . "\t= " . $old . "\n";
      echo (($old != $new) ? "++ " :  "   ") . $furmat . "\t= " . $new . "\n";
    }
  }

  die();

  require_once('date_patch.inc');

  if (!empty($_SERVER['argv'][1])) {
    setlocale(LC_ALL, $_SERVER['argv'][1]);
  }

  print date('jS F Y');

  $date_time = date_create('@' . time());
  print date_format($date_time, 'jS F Y m W', 'nl_NL.UTF-8');