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For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
.css - using PHP to make dynamic style sheets

Did you know that you can use PHP to generate dynamic style sheets? If you look at the accessibility options on our new-look website, you'll find you can change the colour and font size on all the pages, and you can select wide and narrow too. And if you're using an older browser that doesn't fully support styles you'll get an older-look menu than if you have IE6 or similar.

A lot of hard work? Oh yes, but all in one set of pages. Our style sheets are not simply flat files - but rather they're php files that generate the necessary style combination from a single master file, with parameters passed in to set all the various parameters. Here, for example, is the start of the file and part that sets one of the font sizes.

<?php
header("content-type: text/css");
$mencolour = "#ffffcc";
$texcolour = "#000000";
$bfsize = 10;
if ($_REQUEST[fsize] == 4) $bfsize = 8;
if ($_REQUEST[fsize] == 2) $bfsize = 12;
if ($_REQUEST[fsize] == 1) $bfsize = 16;
?>

.tierlinks {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: <?= $bfsize ?>px;
color: #000000;
text-align: left;
text-indent: 2pt;
}


Other issues that will arise if you use this "trick" are cache controls - making sure that the style sheet isn't sent our for every page - and ensuring that the file is parted by the PHP handler even if you choose to give it a .css extension.
(written 2005-11-21, updated 2006-06-09)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
W704 - Web and Intranet - Cascading style sheets - putting it all together
  [565] Using PHP to output images, XML, Style sheets, etc - (2006-01-15)
  [994] Training on Cascading Style Sheets - (2006-12-17)
  [996] Setting your colour theme through PHP - (2006-12-17)
  [1677] CSS training - Cascading Style Sheets (UK course) - (2008-06-15)
  [2223] CSS Style Diagrams - working out where attributes come from - (2009-06-08)
  [4037] Cascading Style Sheets and formatting your web page - (2013-03-10)

H118 - Generating CSS through PHP

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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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