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.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
H118 - Generating CSS through PHP
  [996] Setting your colour theme through PHP - (2006-12-17)
  [565] Using PHP to output images, XML, Style sheets, etc - (2006-01-15)

W704 - Web and Intranet - Cascading style sheets - putting it all together
  [4037] Cascading Style Sheets and formatting your web page - (2013-03-10)
  [2223] CSS Style Diagrams - working out where attributes come from - (2009-06-08)
  [1677] CSS training - Cascading Style Sheets (UK course) - (2008-06-15)
  [994] Training on Cascading Style Sheets - (2006-12-17)


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