codeigniter中的搜索框提供空白数据

<form action="search" method="get">
  <input type="text" name="keyword" placeholder="请输入关键字">
  <input type="submit" value="搜索">
</form>

public function search() {
  $keyword = $this->input->get('keyword');
  
  // 根据关键字进行搜索逻辑处理
  
  // 返回搜索结果到视图
}

public function search($keyword) {
  $this->db->like('title', $keyword);
  $this->db->or_like('content', $keyword);
  $query = $this->db->get('articles');
  
  return $query->result();
}

public function search() {
  $keyword = $this->input->get('keyword');
  $data['results'] = $this->your_model->search($keyword);
  
  $this->load->view('search_results', $data);
}

<?php foreach ($results as $result): ?>
  <h3><?php echo $result->title; ?></h3>
  <p><?php echo $result->content; ?></p>
<?php endforeach; ?>