Provides a new method to the Date object with properties similar to PHP. Not all PHP date options were ported for the sake of not duplicating too many methods already available.

gistfile1.js

// Pad a number with zeros to specified length.
Number.prototype.pad = function(length)
{
  var str = '' + this.valueOf();
  while (str.length < length) {
    str = '0' + str;
  }

  return str;
}

// Mimics php date() function. See http://php.net/manual/en/function.date.php
// Requires Number.pad() method.
Date.prototype.getDateAdv = function()
{
  // Day
  var days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
  var dayLong = days[this.getDay()];

  this.N = this.getDay() + 1;
  this.w = this.getDay();
  this.d = this.getDate().pad(2);
  this.j = this.getDate();
  this.l = dayLong;
  this.D = dayLong.substr(0, 3);

  // Month
  var months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December']
  var monthLong = months[this.getMonth()];

  this.n = this.getMonth() + 1;
  this.m = (this.getMonth() + 1).pad(2);
  this.F = monthLong;
  this.M = monthLong.substr(0, 3);

  // Year
  this.Y = this.getFullYear();
  this.y = this.getFullYear().toString().substr(2, 2);

  // Time
  var a = (this.getHours() < 12)? 'am':'pm';
  var g = (this.getHours() <= 12)? this.getHours():this.getHours() - 12;

  this.a = a;
  this.A = a.toUpperCase();
  this.g = g;
  this.G = this.getHours();
  this.h = g.pad(2);
  this.H = this.getHours().pad(2);
  this.i = this.getMinutes().pad(2);
  this.s = this.getSeconds().pad(2);
}