小编Jar*_*wol的帖子

在Mysql查询中添加PDO::PARAM_INT或PDO::PARAM_STR有任何意义？

$sql  = 'SELECT TagId FROM tagthread WHERE ThreadId = :ThreadId';

$stmt = $this->db->prepare($sql);
$stmt->bindParam(':ThreadId', $threadid, PDO::PARAM_INT);

$stmt->execute();

序列化和反序列化单个实体对象适合我.

以这种方式可以序列化和反序列化多个对象(对象数组)？

$notifications = $this->getDoctrine()
    ->getRepository('AppBundle:Notification')
    ->findAll();

$encoder = new JsonEncoder();
$normalizer = new ObjectNormalizer();

$serializer = new Serializer(array($normalizer), array($encoder));
$jsonContent = $serializer->serialize($notifications, 'json');

return new Response($jsonContent);

和

$response = curl_exec($ch); // my $jsonContent from previous code

$encoder = new JsonEncoder();
$normalizer = new ObjectNormalizer();

$serializer = new Serializer(array($normalizer), array($encoder));
$notifications = $serializer->deserialize($response, Notification::class, 'json');

然后我得到了:

属性路径构造函数需要字符串或"Symfony\Component\PropertyAccess\PropertyPath"的实例.得到:"整数"500内部服务器错误 - UnexpectedValueException

我有一个经纬度点阵.接下来,我将所有点添加到我的地图中.我需要解决方案/算法在页面加载时使用geoloation将用户移动到我的数组中最近的点.(如果地理位置成功当然)