Note:  Modified by Richard Peacock on 08/31/2025 to make compatible with PHP 8.3.

Changed class constructors to use __construct() instead of just the class name again.  This
is required as of PHP 8.0.

Also modified default values of public variables to "public" instead of "var", and set them to "null"
instead of giving them a type.

Made modifications to be more compatible with PHP 8.3


 ╔════════════════════════════════════════════════════════════════════════════╗
 ║                                                                            ║
 ║   pChart - a PHP Charting library                                          ║
 ║                                                                            ║
 ║   Version     : 2.1.4                                                      ║
 ║   Made by     : Jean-Damien POGOLOTTI                                      ║
 ║   Last Update : 19/01/2014                                                 ║
 ║                                                                            ║
 ╚════════════════════════════════════════════════════════════════════════════╝

 ≡ WHAT CAN pCHART DO FOR YOU? ────────────────────────────────────────────────

  pChart is a PHP framework that will help you to create anti-aliased charts or
  pictures directly  from your web  server. You can  then display the result in
  the client browser, sent it by mail or insert it into PDFs. 

  This library  has now reached  an important  point  in its  development cycle
  going out of the beta step. pChart 2.0 is a completly rewritten library based
  on what I've learned doing the first version. 


 ≡ PACKAGE CONTENTS ───────────────────────────────────────────────────────────
 
 ┬
 │
 ├─ /cache			This folder is used by the pCache module.
 │
 ├─ /class			This folder contains the library core classes.
 │   │
 │   ├─ pBarcode39.class	Class to draw Code 39 barcodes.
 │   ├─ pBarcode128.class	Class to draw Code 128 barcodes.
 │   ├─ pBubble.class		Class to draw bubble charts.
 │   ├─ pCache.class		Class enabling chart caching functionalities.
 │   ├─ pData.class		Class to manipulate chart data.
 │   ├─ pDraw.class		Extended drawing functions.
 │   ├─ pIndicator.class	Class to draw indicators.
 │   ├─ pImage.class		Core drawing functions.
 │   ├─ pPie.class		Class to draw pie charts.
 │   ├─ pSplit.class		Class to draw split path charts.
 │   ├─ pSpring.class		Class to draw spring charts.
 │   ├─ pScatter.class		Class to draw scatter charts.
 │   ├─ pStock.class		Class to draw stock charts.
 │   └─ pSurface.class		Class to draw surface charts.
 │
 ├─ /data			This folder contains extended data.
 │   │
 │   ├─ 39.db			Code 39 barcodes static database.
 │   └─ 128.db			Code 128 barcodes static database.
 │
 ├─ /examples			This folder contains some PHP examples.
 │   │
 │   ├─ delayedLoader		Delayed loader script example.
 │   ├─ imageMap		Image map script example.
 │   └─ sandbox			Powerful dev. tool to design your charts.
 │
 ├─ /fonts			This folder contains a bunch of TTF fonts.
 │
 ├─ /palettes			Sample palettes files.
 │
 ├─ change.log			History of all the changes since the 2.0
 ├─ GPLv3.txt			GPLv3 official text.
 └─ readme.txt			This file.


 ≡ PREREQUiSiTES ──────────────────────────────────────────────────────────────

  This library has been written to work with PHP 5+ versions. It will also work
  with PHP 4 but the rendering quality maybe downgraded and the rendering speed
  seriously impacted.

  pChart require the GD and FreeType PHP extensions to be installed on your
  web server. This is an important prerequiste that can't be overrided.  


 ≡ RUNNiNG THE EXAMPLES ───────────────────────────────────────────────────────

  pChart is  shipped with  examples (located  in the /examples folder) that you
  can either render from a web page using your http and pointing to this folder
  or from the command line invoking the php interpreter.

  On windows OS,  assuming that  your PHP binaries  are correctly configured in
  the PATH  environment variable  you can  also execute  the BuildAll.cmd batch
  file.


 ≡ LiCENSE ────────────────────────────────────────────────────────────────────

  The  pChart library  is  released  under  two  different  licenses.  If  your
  application is not a  commercial one (eg: you make no money by redistributing
  it) then the GNU GPLv3 license (General Public License) applies. This license
  allows you to  freely integrate this library in your applications, modify the
  code and redistribute it  in bundled packages  as long as your application is
  also distributed with the GPL license. 

  The GPLv3 license description can be found in GPLv3.txt.

  If your  application can't  meet the GPL  license or is a commercial one (eg:
  the library is  integrated in a software or an appliance you're selling) then
  you'll have to buy a commercial  license. With this license you don't need to
  make publicly available your application code under the GPL license terms.

  Commercial license price are depending of your needs.

  Please consult the web page : http://www.pchart.net/license


 ≡ EXTERNAL COPYRiGHTS ────────────────────────────────────────────────────────

  Those external  components are  only provided as a  base to run examples. The
  pChart library does not depends on any of them to be used.

  Famfamfam  icons has  been made by Mark James,  Rounded corners lite has been
  coded by  Cameron Cooke and  Tim Hutchison, Javascript  Color Picker has been
  written by Honza Odvarko.

  The provided font files are licensed under their own terms :

   │
   ├─ advent_light.ttf	Copyright Andreas K. inde
   ├─ Bedizen.ttf	Copyright Tepid Monkey Fonts
   ├─ calibri.ttf	Copyright Microsoft
   ├─ Forgotte.ttf	Copyright Ray Larabie
   ├─ GeosansLight.ttf	Copyright Manfred Klein
   ├─ MankSans.ttf	Copyright Manfred  Klein
   ├─ pf_arma_five.ttf	Copyright Yusuke Kamiyamane
   ├─ Silkscreen.ttf	Copyright Jason Aleksandr Kottke
   └─ verdana.ttf	Copyright Microsoft


 ≡ SUPPORT ────────────────────────────────────────────────────────────────────

  Since  the  beginning, pChart  is a community  driven project. You're missing
  feature then ask! We'll  try to  get it implemented  in the future version or
  you'll be guided to create a class extension for your own needs. 

  pChart portal      : http://www.pchart.net
  Documentation wiki : http://wiki.pchart.net
  Support forum      : http://wiki.pchart.net/forum


 ---
 (c)2014 Jean-Damien POGOLOTTI - 13k lines of codes