My kickass less apache handler

css-handler.php

<?php
require_once("lessc.php");
$file = $_SERVER["PATH_TRANSLATED"];
$array = explode('.', $file);
$nfile = $array[0] . '.less';
$name = $array[0];
header("Content-type: text/css");
if (file_exists($nfile))
{
	$code = file_get_contents($nfile);
	$lc = new lessc();
	try {
		$code = preg_replace_callback("/border-radius: ([^;]*)/", function($matches) {
			$r = "-webkit-border-radius: ";
			$r .= $matches[1];
			$r .= ";\n-moz-border-radius: ";
			$r .= $matches[1];
			$r .= ";\n-khtml-border-radius: ";
			$r .= $matches[1];
			$r .= ";\nborder-radius: ";
			$r .= $matches[1];
			$r .= ";";
			return $r;
		}, $code);
		
		$code = preg_replace_callback("/box-shadow: ([^;]*)/", function($matches) {
			$r = "-webkit-box-shadow: ";
			$r .= $matches[1];
			$r .= ";\n-moz-box-shadow: ";
			$r .= $matches[1];
			$r .= ";\nbox-shadow: ";
			$r .= $matches[1];
			$r .= ";";
			return $r;
		}, $code);
		$compiled = $code;
		$compiled = preg_replace_callback('/background-size: ?([^;]*)/', function($matches) {
			$string = "-moz-background-size: $matches[1];\n";
			$string .= "-webkit-background-size: $matches[1];\n";
			return $string . "background-size: $matches[1]";
		}, $compiled);
		$compiled = preg_replace_callback('/background: ?linear-gradient\(([^,]*?), ?([^,]*?), ?([^,]*?)\)/', function($matches) {
			$r = "background: $matches[2];\n";
			$r .= "background: -webkit-linear-gradient($matches[1], $matches[2], $matches[3]);\n";
			$r .= "background: -moz-linear-gradient($matches[1], $matches[2], $matches[3]);\n";
			$r .= "background: -ms-linear-gradient($matches[1], $matches[2], $matches[3]);\n";
			$r .= "background: -o-linear-gradient($matches[1], $matches[2], $matches[3]);\n";
			$r .= "background: linear-gradient($matches[1], $matches[2], $matches[3])";
			return $r;
		}, $compiled);
		$code = $compiled;
		$compiled = $lc->parse($code);
				$compiled = preg_replace_callback('/background: ?linear-gradient\(([^,]*), ?([^,]*?), ?([^,]*?), ?([^,]*?)\)/', function($matches) {
			$r = "background: -webkit-linear-gradient($matches[1], $matches[2], $matches[3]);\n";
			$r .= "background: -moz-linear-gradient($matches[1], $matches[2], $matches[3]);\n";
			$r .= "background: -ms-linear-gradient($matches[1], $matches[2], $matches[3]);\n";
			$r .= "background: -o-linear-gradient($matches[1], $matches[2], $matches[3]);\n";
			$r .= "background: linear-gradient($matches[1], $matches[2], $matches[3])";
			if ($matches[2][0] == '#') $matches[2] = substr($matches[2], 1);
			if ($matches[3][0] == '#') $matches[3] = substr($matches[3], 1);
			$d = 'background: url(';
			$d .= file_get_contents("http://localhost/gradient.php?direction=$matches[1]&height=$matches[4]&stop1=$matches[2]&stop2=$matches[3];");
			$d .= ") repeat-x;\n";
			$r = $d . $r;
			return $r;
		}, $compiled);
		$compiled = preg_replace('/([0-9]+?) ([px|%|em|pt])/', '\1\2', $compiled);
		file_put_contents($name . '.bak', file_get_contents($file));
		file_put_contents($file, $compiled);
		echo $compiled;
	} catch (exception $ex) {
		echo '/* Problem with LESSCSS, reverting to normal css - ' . $ex . ' */';
		echo file_get_contents($file);
	}
} else {
	echo file_get_contents($file);
}
?>