function namePrefix ($number
{
//Similar scrip in jquery https://jsfiddle.net/ayn_/z2677vs5/
$currentNum = $number
$currentNum = preg_replace'{/s|,|$|h}', '', $currentNum);
if ($currentNum > 999 && $currentNum < 999999) {
$newNum = ($currentNum / 1000);
$newNum = floor$newNum*100)/100 . 'k'
} else if ($currentNum > 999999) {
$newNum = ($currentNum / 1000000);
$newNum = floor$newNum*100)/100 . 'M'
} else {
$newNum = 'Error, number format is invalid'
}
return $newNum
}
Category: Algorithm
Hailstone
<?php
/**
* hailstone
*
* Calculates a hailstone sequence.
http://en.wikipedia.org/wiki/Collatz_conjecture
*
* @version 0.3
* @author Contributors at eXorithm
* @link /algorithm/view/hailstone Listing at eXorithm
* @link /algorithm/history/hailstone History at eXorithm
* @license /home/show/license
*
* @param number $number number to start with
* @return array
*/
function hailstone($number=17)
{
$result = array();
while ($number > 1) {
$result[] = $number;
if ($number & 1)
$number = 3 * $number + 1;
else
$number = $number / 2;
}
$result[] = $number;
return $result;
}
?>
eXorithm – Execute Algorithm: View / Run Algorithm allocate_color
function allocate_color ($image, $color, $transparency
{
if (preg_match'/[0-9ABCDEF]{6}/i', $color)==0) {
throw new Exception"Invalid color code.");
}
if ($transparency<0 || $transparency>127) {
throw new Exception"Invalid transparency.");
}
$r = hexdecsubstr$color, 0, 2));
$g = hexdecsubstr$color, 2, 2));
$b = hexdecsubstr$color, 4, 2));
if ($transparency>127) $transparency = 127;
if ($transparency<=0)
return imagecolorallocate$image, $r, $g, $b);
else
return imagecolorallocatealpha$image, $r, $g, $b, $transparency);
}
eXorithm – Execute Algorithm: View / Run Algorithm invert_color
function invert_color ($color
{
$new = ''
for ($i=0;$i<3;$i++){
$c = 255 - hexdecsubstr$color,(2*$i),2));
$c = dechex$c);
$new .= (strlen$c) < 2) ? '0'$c : $c
}
return $new
}
eXorithm – Execute Algorithm: View / Run Algorithm unity
function unity ($passkey
{
  $ubn = array();
 Â
  while ($passkey > 9) {
    if (strlen$passkey) > 1)
      $passkey = array_sumstr_split$passkey));
    else
      $passkey = $passkey
  }Â
 Â
  $ubn[] = $passkey
 Â
  return end$ubn);
}Â
eXorithm – Execute Algorithm: History For Algorithm address_elevation
address_elevation version 0.2 Returns the elevation (in meters) above sea level for an address.
eXorithm – Execute Algorithm: Algorithms Beginning with E
eXorithm – Execute Algorithm: View / Run Algorithm rounded_rectangle
function rounded_rectangle ($height, $width, $corner_radius, $rectangle_color, $background_color, $background_transparent
{
if (($corner_radius>($height/2)) || ($corner_radius>($width/2))) {
throw new Exception'Corner radius may not exceed half the length of any of the sides.');
}
$image = image_create_alpha$width, $height);
if (!$background_transparent) {
$background_color = allocate_color$image, $background_color);
imagefilledrectangle$image, 0, 0, $width, $height, $background_color);
}
$rectangle_color = allocate_color$image, $rectangle_color);
// draw 2 rectangles that overlap (making an image like the cross on the Swiss flag)
imagefilledrectangle$image, $corner_radius, 0, $width$corner_radius-1, $height, $rectangle_color);
imagefilledrectangle$image, 0, $corner_radius, $width, $height$corner_radius-1, $rectangle_color);
// draw 4 circles for the corners
imagefilledellipse$image, $corner_radius, $corner_radius, $corner_radius*2, $corner_radius*2, $rectangle_color);
imagefilledellipse$image, $width$corner_radius-1, $corner_radius, $corner_radius*2, $corner_radius*2, $rectangle_color);
imagefilledellipse$image, $corner_radius, $height$corner_radius-1, $corner_radius*2, $corner_radius*2, $rectangle_color);
imagefilledellipse$image, $width$corner_radius-1, $height$corner_radius-1, $corner_radius*2, $corner_radius*2, $rectangle_color);
return $image
}
eXorithm – Execute Algorithm: Embed Algorithm weather_forecast
Embed This Algorithm
This page will help you embed the algorithm weather_forecast on a page on your own website. Just configure the inputs, then click the generate button to get a snippet of code you can paste onto your site. You have two options.
- You can embed the entire form. Users will be able to enter their own arguments, and will need to press the run button
to execute the algorithm. - You can add only the output of the algorithm to your website. There will be no argument inputs or run button.
eXorithm – Execute Algorithm: View / Run Algorithm radioactive_decay
function radioactive_decay ($half_life, $time
{
$lambda = log(2)/$half_life
return 100 - 100 * powexp(1), -1 * $lambda * $time);
}