The code posted by MatRt is close, but is using + signs instead of . signs for the appending and it doesn't seem to actually send the CSS to the page, even though it will print the CSS.
I managed to get the code supplied here working with a small tweak to it. Here it is:
<?php
// Check the parameter and stop if there is no files param
if (empty($_GET['files']))
die();
// Retrieve the list of files
$files = explode(",", $_GET['files']);
$directoryOfCss = 'C:\xampplite\htdocs\path\to\my\folder\css\\';
$cssContent = "";
// Loop on all potential file and try to retrieve its content
foreach($files as $oneFile)
{
//echo $directoryOfCss . $oneFile . ".css";
if (file_exists($directoryOfCss . $oneFile . ".css")){
//echo $directoryOfCss . $oneFile . ".css<br>";
$cssContent .= file_get_contents($directoryOfCss . $oneFile . ".css");
}
}
// Finally echo the total content of CSS
header("Content-Type: text/css");
header("X-Content-Type-Options: nosniff");
header("Content-Type: text/css;X-Content-Type-Options: nosniff;");
echo $cssContent;
I got the headers part from this post.