original_string: public static function get_conversation_between_users(array $userids) {
          global $DB;
  
          $conversations = self::get_individual_conversations_between_users([$userids]);
          $conversation = $conversations[0];
  
          if ($conversation) {
              return $conversation->id;
          }
  
          return false;
      }
code: public static function get_conversation_between_users(array $userids) {
          global $DB;
  
          $conversations = self::get_individual_conversations_between_users([$userids]);
          $conversation = $conversations[0];
  
          if ($conversation) {
              return $conversation->id;
          }
  
          return false;
      }
code_tokens: public static function get_conversation_between_users ( array $ userids ) { global $ DB ; $ conversations = self :: get_individual_conversations_between_users ( [ $ userids ] ) ; $ conversation = $ conversations [ 0 ] ; if ( $ conversation ) { return $ conversation -> id ; } return false ; }
docstring: Returns the conversation between two users.
  
  @param array $userids
  @return int|bool The id of the conversation, false if not found
docstring_tokens: Returns the conversation between two users .