private function getMatchArrayFromEnvironment($matchString)
    {
        $matches = array();
        foreach (explode(',', $matchString) as $etag) {
            $matches[] = trim($etag, '" ');
        }

        return $matches;
    }
private function getMatchArrayFromEnvironment($matchString)
    {
        $matches = array();
        foreach (explode(',', $matchString) as $etag) {
            $matches[] = trim($etag, '" ');
        }

        return $matches;
    }
private function getMatchArrayFromEnvironment ( $ matchString ) { $ matches = array ( ) ; foreach ( explode ( ',' , $ matchString ) as $ etag ) { $ matches [ ] = trim ( $ etag , '" ' ) ; } return $ matches ; }
Get if-match data from request header
@param  str   $matchString
@return str[]
Get if - match data from request header