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Fix space removal so that it doesn't break space-separated values where the developer used more than one space to separate values.
<?php
/**
* On-the-fly CSS Compression
* Copyright (c) 2009 and onwards, Manas Tungare.
* Creative Commons Attribution, Share-Alike.
*
* In order to minimize the number and size of HTTP requests for CSS content,
* this script combines multiple CSS files into a single file and compresses
* it on-the-fly.
*
* To use this in your HTML, link to it in the usual way:
* <link rel="stylesheet" type="text/css" media="screen, print, projection" href="/css/compressed.css.php" />
*/
/* Add your CSS files to this array (THESE ARE ONLY EXAMPLES) */
$cssFiles = array(
"ads.css",
"formatting.css",
"pagesections.css",
"print.css",
"screen.css",
"sidebar.css"
);
/**
* Ideally, you wouldn't need to change any code beyond this point.
*/
$buffer = "";
foreach ($cssFiles as $cssFile) {
$buffer .= file_get_contents($cssFile);
}
// Remove comments
$buffer = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $buffer);
// Remove space after colons
$buffer = str_replace(': ', ':', $buffer);
// Remove whitespace
$buffer = str_replace(array("\r\n", "\r", "\n", "\t"), '', $buffer);
// Collapse adjacent spaces into a single space
$buffer = ereg_replace(" {2,}", ' ',$buffer);
// Remove spaces that might still be left where we know they aren't needed
$buffer = str_replace(array('} '), '}', $buffer);
$buffer = str_replace(array('{ '), '{', $buffer);
$buffer = str_replace(array('; '), ';', $buffer);
$buffer = str_replace(array(', '), ',', $buffer);
$buffer = str_replace(array(' }'), '}', $buffer);
$buffer = str_replace(array(' {'), '{', $buffer);
$buffer = str_replace(array(' ;'), ';', $buffer);
$buffer = str_replace(array(' ,'), ',', $buffer);
// Enable GZip encoding.
ob_start("ob_gzhandler");
// Enable caching
header('Cache-Control: public');
// Expire in one day
header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 86400) . ' GMT');
// Set the correct MIME type, because Apache won't set it for us
header("Content-type: text/css");
// Write everything out
echo($buffer);
?>
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