$re = '~Garde-(.*?)(svg#Uni)(.*?)\'~';
$str = '@font-face { font-family: \'UniRegular\'; src: url(\'../../assets/type/UniGarde-Book.svg#UniGarde-Book\') format(\'svg\'); }';
preg_match($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