uniqueginun

function extractUuid(string $string) {
  $uuidPattern = '/[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/i';

  $uuid = preg_match($uuidPattern, $string, $matches) ? $matches[0] : null;

  return $uuid;
} 


echo extractUuid("some other string 42344k-23423-dfs34-9--2342"); // null