beginner code help

Hi ! Can anyone tell me why this line returns the parse error if (strstr($name, "firstname") or strstr($ime, "lastname")){ } With this line I'd like to determine if string $name , which contains both first and last name, has earlier defined first and last name, with no difference of the order(name is first, surname last or oposite). Can anyone tell me how to compare string values in non-case sensitive way(with no difference between upper and lower case characters Name == name)