quisido

RewriteEngine On
RewriteRule ^gradients\/(\d+)\-([a-fA-F\d]{6})-([a-fA-F\d]{6})\.gif$ gradient.php?height=$1&from=$2&to=$3 [L,NC]

quisido

<?php

// Validate inputs.
if (
  !array_key_exists('from', $_GET) ||
  !preg_match('/^[a-fA-F\d]{6}$/', $_GET['from']) ||
  !array_key_exists('to', $_GET) ||
  !preg_match('/^[a-fA-F\d]{6}$/', $_GET['to']) ||
  !array_key_exists('height', $_GET) ||
  !is_numeric($_GET['height']) ||

quisido

<style type="text/css">

#my-site-header {
  background-color: #FFFFFF;
  /* gradient: 16px height, #ffffff start, #404080 end */
  background-image: url("http://i.imgur.com/4L3aj.gif");
  background-position: left bottom;
  background-repeat: repeat-x;
}

quisido

<?php

// gradient with 10px height
$height = 10;

// start color is #fa0000
$start = Array(250, 0, 0);

// end color is #00c864
$end = Array(0, 200, 100);

quisido

<?php

// You may replace this with a static height.
$height = $_GET['height'];

// You may replace this with a static start color.
// RGB goes here, e.g. Array(255, 0, 0) for red
$start = Array();

// You may replace this with a static end color.

quisido

<?php

// provide a generic 404 error if...
if (

  // FROM/START color does not exist
  !array_key_exists('from', $_GET) ||

  // FROM/START color is not valid hex
  !preg_match('/^[a-fA-F\d]{6}$/', $_GET['from']) ||

quisido

<?php

// Tell the browser it's a GIF image.
header('Content-Type: image/gif');

/*
Create an image with a width of 1 and height of $height.
Width only needs to be 1px because it will presumably
be tiled horizontally.
*/

quisido

var characters =
  "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" +
  "0123456789`~!@#$%^&*()_-+=[{]}|;:,.<>/?";

quisido

// Valid characters.
var characters =
  "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" +
  "0123456789`~!@#$%^&*()_-+=[{]}|;:,.<>/?";

// password(X) will return a password of length X.
// password() will return a password of length 12.
var password = function(size) {

  // Placeholder string, where our final password will end up.

quisido

<?php

$characters =
  'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' .
  '0123456789`~!@#$%^&*()_-+=[{]}|;:,.<>/?';

$strlen_characters = strlen($characters);

function password($length) {
  $temp = "";