gistfile1.aw

<?php

// This:
$slides = array(
  "http://local.dh2i.com/images/slides/slide1.png",
  "http://local.dh2i.com/images/slides/slide2.png",
  "http://local.dh2i.com/images/slides/slide3.png",
  "http://local.dh2i.com/images/slides/slide4.png",
);

// Can be done like this:
$slides = array();
foreach (array(1, 2, 3, 4) as $index) {
	$slides[] = "http://local.dh2i.com/images/slides/slide$index.png";
}

// Or, for max win (functional approach):
$slides = array_map(function($e) {
  return "http://local.dh2i.com/images/slides/slide$e.png";
}, array(1, 2, 3, 4));