php curl返回空字符串

Question

我试图调用API并发布一些数据。我收到了以下回复：

string '' (length=0).

以下是代码：

$subscriberInfo = [
    $subscriberEmail => $email,
    $subscriberJobType => $jobType,
    $subscriberLocation => $location
];

$ch = curl_init('https://URLTOEXTERNALSITE');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: MY API KEY HERE', 'Content-Type: text/x-php-serialization'
    ));

// execute!
$response = curl_exec($ch);

// close the connection, release resources
curl_close($ch);

var_dump($response);
die();

为什么我只返回一个空字符串？

修改

这是API docs

中的JSON示例

$ curl -X POST EXTERNAL/URL/GOES/HERE -u $API_KEY: \

--form email=user1@domain1.com \
--form create_time='2012-05-03 09:45:23' \
--form search='Legal Assistant' \
--form location='Houston, TX' \
--form content-type=application/json

Answer 1

你忘了打电话了

  

curl_exec（$ CH）;

后

  

$ response = curl_exec（$ ch）;

    // execute!
    $response = curl_exec($ch);

    curl_exec($ch);

    // close the connection, release resources
    curl_close($ch);