准备默认查询

Question

我有工作，但查询不具备绑定值：

$this->_db->query("SELECT * from posts WHERE post_title LIKE '%$this->search_keywords%' OR post_content LIKE '%$this->search_keywords%' LIMIT 100"); 
$this->rows_results_found = $this->_db->resultset(); 

$this->results_found_num = sizeof($this->rows_results_found); 

我就重写这一个，但没有运气：

$this->_db->query('SELECT * from posts WHERE post_title LIKE :search_keywords OR post_content LIKE :search_keywords LIMIT 100'); 
      $this->_db->bind(':search_keywords', '%$this->search_keywords%'); 

      $this->rows_results_found = $this->_db->resultset(); 

      $this->results_found_num = sizeof($this->rows_results_found); 

$ this-> results_found_num总是显示为空数组。

这是我在结果集（）（这是从另一个外部类）：

public function resultset() { 
     $this->execute(); 
     return $this->stmt->fetchAll(PDO::FETCH_ASSOC); 
    } 

我是缺少在这里？

预先感谢您！

Answer 1

假设你有一个有效的连接调整功能为以下内容：

public function get_posts($conn) { 
    $query = 'SELECT * 
       FROM posts 
       WHERE post_title LIKE :search_keywords1 OR 
        post_content LIKE :search_keywords2 LIMIT 100'; 
    $stmt = $conn->prepare($query); 
    $stmt->bindValue(':search_keywords1', '%'.$this->search_keywords.'%'); 
    $stmt->bindValue(':search_keywords2', '%'.$this->search_keywords.'%'); 
    $stmt->execute(); 

    return $stmt->fetchAll(PDO::FETCH_ASSOC); 
} 

用法：

$posts = $this->_db->get_posts($conn); 
//var_dump($post) 
$this->rows_results_found = count($post);