$re = '/^[\{\(\[]?(?P<studio>.+?)[\}\)\]]?([\-\ ]{2,3}|\]\s)(?P<clip_name>.+)/m';
$str = '[studio island mredia] - name
studio island - namde
(studio name) - clip nsme
[raging stallion] - magnetism - scene 2 with tommy defendi and donnie dean
[falcon studios] - out of athens
[falcon studios] out of athens
';
preg_match_all($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