如何在php中用POST发送数据，用json接收数据

Question

我想连接到API，但我需要用post发送数据，但用JSON接收。

    <?php
$params = array (
'user_name' => '1521',
'user_password' => '8554',
'webservice_user'=>'test',
'token'=>'202cb962ac59075b964b07152d234b70');
$query = http_build_query ($params);
$contextData = array (
'method' => 'POST',
'header' => "Connection: close\r\n".
"Content-Length: ".strlen($query)."\r\n",
'content'=> $query );
$context = stream_context_create (array ( 'http' => $contextData ));
// Read page rendered as result of your POST request
$json = file_get_contents('url_here');
$obj = json_decode($json);
echo $obj->access_token;
$result =  file_get_contents (
'IP_ex/login',
false,
$context);
echo($result);
?>

file_get_contents(url_here):打开流失败

Answer 1

要以json格式接收in，应该执行echo json_encode($myarray)如下操作

<?PHP
header('Content-Type: application/json');
echo json_encode($myArray);

如果要向服务器发送post请求，应该使用cURL或类似的东西。