public function Tweet_follower($id_user) { $follow = new Follow($id_user); $id_follower = $follow->id_follower($this->_db, $this->_id_user); $affiche = ''; foreach ($id_follower as $value) { $tweet_follower = $this->getUserTweets($this->_db, $value->id_follower); foreach ($tweet_follower as $val) { $affiche .= $this->display($val); } //function display() } return $affiche; }