$re = '/^(?i:(?:6553[0-5]|655[0-2]\d|65[0-4]\d\d|6[0-4]\d{3}|[0-5]\d{4}|\d{1,4})(?:-(?:6553[0-5]|655[0-2]\d|65[0-4]\d\d|6[0-4]\d{3}|[0-5]\d{4}|\d{1,4}))?|any|rpc|rpc-epmap|teredo|iphttps)(?:,(?i:(?:6553[0-5]|655[0-2]\d|65[0-4]\d\d|6[0-4]\d{3}|[0-5]\d{4}|\d{1,4})(?:-(?:6553[0-5]|655[0-2]\d|65[0-4]\d\d|6[0-4]\d{3}|[0-5]\d{4}|\d{1,4}))?|any|rpc|rpc-epmap|teredo|iphttps))*$/';
$str = '0-154,any';
preg_match($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