PHP implementation code for compressing multiple CSS files

/*
 * Compress css file
 * by bbs.it-home.org
 /*
header('Content-type: text/css');
 ob_start("compress");
function compress($buffer) {
 /* remove comments */
 $buffer = preg_replace('!/*[^*]**+([^/][^*]** +)*/!', '', $buffer);
 /* remove tabs, spaces, newlines, etc. */
 $buffer = str_replace(array("rn", "r", "n", "t ", ' ', ' ', ' '), '', $buffer);
 return $buffer;
}
/* Load the css file to be compressed*/
include(' master.css');
include('typography.css');
include('grid.css');
include('print.css');
include('handheld.css');
ob_end_flush();

Compared with the php code for compressing multiple CSS and JS files introduced before, this one is relatively simple and suitable for use as Getting Started Reference.