$re = '/^GET\ (\/([^\s?#]+)?([?][^?#]*)?(#.*)?)?/sm';
$str = 'GET /flussonic_event.php HTTP/1.1
GET /tnt/index.m3u8 HTTP/1.1
GET /tnt HTTP/1.1
GET /tnt/mpegts HTTP/1.1
';
preg_match($re, $str, $matches, PREG_OFFSET_CAPTURE, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php