// unify newlines to unix format
$file=preg_replace('/[rn]+/', "n", $file);

// get lines from file
$lines=explode("n", $file);

/* cvars array(3)
	0	cvar name
	1	cvar value
	2	comment
*/
$cvars=array();

foreach($lines as $id => &$cvar){
	$cvar=trim($cvar);
	if(substr($cvar, 0, 2)!='//' && preg_match('@(^w+) (("w+")|(w+)) ?(// ?(.*))?$@', $cvar, $matches)){
		$cvars[]=array($matches[1], $matches[2], $matches[6]);
	}
}