Question

使用以下代码从特定ID

获取SQL的值

 include 'classes/connection.class.php';
                        include 'classes/news.class.php';
                        $connection = new Connection('localhost', '1video', 'sanoj', '123456');
                        $news = new News($connection->getDb());
                        $id=$_GET['name'];
                        try {
                            print_r($news->get($id));

它有效 RESULT

Array ( [id] => 103 [title] => bkjbjkuk [location] => 1video.com_81e81be69867c77aea1b9f630c4cf482.mp4 [thumb] => 1video.com_81e81be69867c77aea1b9f630c4cf482.jpg [views] => 1 [likes] => 1 [uploader] => lawrence [added_on] => 19-Feb-16 [tags] => hhuhuhuo [duration] => [comments] => [shortstory] => hihouihohoh )

但我需要在特定位置回显结果但不起作用

方法1

include 'classes/connection.class.php';
                        include 'classes/news.class.php';
                        $connection = new Connection('localhost', '1video', 'sanoj', '123456');
                        $news = new News($connection->getDb());
                        $id = $_GET['name'];
                        try {
                            print_r($news->get($id));
                            foreach ($news->result() as $row) {
                                $news= $row->title;

                            ?>
                            <h3><?php echo $vidid ?></h3>

Fatal error: Call to undefined method News::result()

有人可以指导我如何echo array()在不同的位置

课程新闻

class News {
    private $db;

    private $newsByPage = 5;

    public function  __construct(PDO $db)
    {
        $this->db = $db;
    }  
 public function get($id)
    {
        $q = $this->db->prepare("SELECT * FROM videos WHERE id = :id");
        $q->bindValue(":id", $id, PDO::PARAM_INT);
        if(!$q->execute())
        {
            $errors = $q->errorInfo();
            throw new Exception("Error while getting a news (".$errors[2].").");
        }
        else
        {
            if($res = $q->fetch(PDO::FETCH_ASSOC)){
                return $res;
            }else{
                throw new Exception("No match for id(".$id.").");
        }}
        $q->closeCursor();
    }
}

Answer 1

应该是这样的：

try {
    $myNews = $news->get($_GET['name']);
    echo $myNews['title'];
} // -------

致命错误：不能使用类型为News的对象作为使用foreach尝试的数组

1 个答案: