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For 2023 - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
Table and graph of same data
Maps, Graphics and Geographics example from a Well House Consultants training course
More on Maps, Graphics and Geographics [link]

This example is described in the following article(s):
   • Computer Graphics in PHP - World (incoming data) to Pixel (screen) conversion - [link]

If you're searching for a page where you can try this code, select here

This example references the following resources:

Source code: railuse.php Module: H309

# Take postcode zone from the URL

$place "SN";
if (
preg_match('/^[A-Z]{1,2}$/',$_REQUEST[place],$gotten)) {
$place $gotten[0]; }

# Generate the table

$fh fopen("railstats.txt","r");

$html "<tr><td>&nbsp;</td>";
for (
$k 7$k 13$k++) {
$html .= "<th>".($k+1998)."</th>";
$html .= "<th>2005 -> 2010<br />change</th>";
$html .= "</tr>";

while (
$vals fgetcsv($fh,0,"\t")) {
$base $vals[7];
$roof $vals[count($vals)-1];

        if (
$base 50 and $roof 50) {
$pci sprintf("%.1f%%",100*$roof/$base);
        } else {
$pci "-";

        if (! 
preg_match("/^$place\\d/",$vals[2])) continue;

$html .= "<tr>";
$html .= "<td>$vals[6]</td>";
        for (
$k 7$k count($vals); $k++) {
$html .= "<td align=right>".htmlspecialchars($vals[$k])."</td>";
$html .= "<td align=right>$pci</td>";
$html .= "</tr>";


<head><title>Rail ticket sales trends <?= $place ?> postcodes</title></head>
<body><h1>Rail ticket sales - 2005 to 2010 - <?= $place ?></h1>
<img src=http://www.wellho.net/demo/railtrends.php?place=<?= $place ?>>
<br /><br />
The diagram shows how rail traffic (measured by tickets sold) has grown or
shunk in the five years since 2005 at each of the various stations in a
postcode region - in this case <?= $place ?>.  Figures for 2004-5 are taken
as 100%, and then each of the following years is shown for each station as
a percentage of that figure.<br><br>
Dark blue - over 500,000 entries / exits in 2005<br>
Red - over 50,000 but less that 500,000 entries<br>
Green - over 5,000 but less than 50,000 entries<br>
Pink - over 500 but less than 5,000 entries<br><br>
Here is the raw data:<br /><br />
<table cellpadding=4><?= $html ?></table><br>
Data is for year up to 31st March (e.g. "2010" is 1st April 2009
to 31st March 2010).  Figures are Department for Transport published
figures for total ticket sales for entrances and exits at specific
stations and are subject to the caveats in their reports. The graph excludes
stations with less that 500 entrances / exits (or not open) in the year
to 31st March 2005. Where a percentage is given in the final column, it's
the data for 2010 as a percentage of the 2005 data; we do not calculate /
display the percentage for stations without data or with very few
passengers indeed in either of these two years as it could mislead.<br><br>
<form>Want to see another postcode zone?  Enter initial letters here:
<input name=place size=2> and <input type=submit></form>

Learn about this subject
This module and example are covered on our public PHP Techniques course. If you have a group of three or more trainees who need to learn the subject, we can also arrange a private or on site course for you.

Books covering this topic
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Other Examples
This example comes from our "Maps, Graphics and Geographics" training module. You'll find a description of the topic and some other closely related examples on the "Maps, Graphics and Geographics" module index page.

Full description of the source code
You can learn more about this example on the training courses listed on this page, on which you'll be given a full set of training notes.

Many other training modules are available for download (for limited use) from our download centre under an Open Training Notes License.

Other resources
• Our Solutions centre provides a number of longer technical articles.
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The Horse's mouth provides a daily tip or thought.
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• And there's a global index here.

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This is a sample program, class demonstration or answer from a training course. It's main purpose is to provide an after-course service to customers who have attended our public private or on site courses, but the examples are made generally available under conditions described below.

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