(PECL quickhash >= Unknown)
This method updates an entry in the hash with a new value, or adds a new one if the entry doesn't exist
public int QuickHashIntStringHash::set ( int $key, string $value )
This method tries to update an entry with a new value. In case the entry did not yet exist, it will instead add a new entry. It returns whether the entry was added or update. If there are duplicate keys, only the first found e