$re = '~[^/.]*\.(\w+)[^/]*$~m';
$str = 'http://static.gazeta.ru/nm2012/fonts/light/pts_regular_caption.svg#PTSans-CaptionBold
http://2.cdn.echo.msk.ru/assets/../fonts/echo_font-v5.eot#iefix';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($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