如何从数组php中只获取一个元素[重复]

Question

我有这个 JSON 数组数据

{"accessToken":"eyJhbGciOiJSUzUxMiJ9.e","refreshToken":"QErx0bUxyx6wxFj5AXcAh21UuyO8ad/ULIaGlP3LU2lmXGnx0twbYdM+nJyfwAcK9Av50uZ3fSZ/2nhJwIi+bA==","expiresIn":"2021-11-11T10:20:33Z","issuedAt":"2021-11-11T10:05:33Z","tokenType":"Bearer"}

如何从数组中仅获取 accessToken 对象。即yJhbGciOiJSUzUxMiJ9.e

这就是我尝试过的方法

$response = curl_exec($curl);

curl_close($curl);
$token = $response['accessToken'];
echo $token;

但我得到了这个错误

Warning: Illegal string offset 'accessToken'

Answer 1

在尝试访问数组之前尝试一下

json_decode($response, true);

Answer 2

$response = curl_exec($curl);

curl_close($curl);
$data = json_decode($response, true);
echo $data['accessToken'];