检查$HTTP_RAW_POST_DATA变量

在数组中返回值

 $data = json_decode(file_get_contents('php://input'), true);

检查$HTTP_RAW_POST_DATA变量

如果你安装了pecl/http扩展，你也可以使用这个:

$request = new http\Env\Request();
$request->getBody();

http_get_request_body()根据文档http://php.net/manual/fa/function.http-get-request-body.php显式地用于获取PUT和POST请求的主体

function getPost()
{
    if(!empty($_POST))
    {
        // when using application/x-www-form-urlencoded or multipart/form-data as the HTTP Content-Type in the request
        // NOTE: if this is the case and $_POST is empty, check the variables_order in php.ini! - it must contain the letter P
        return $_POST;
    }

    // when using application/json as the HTTP Content-Type in the request 
    $post = json_decode(file_get_contents('php://input'), true);
    if(json_last_error() == JSON_ERROR_NONE)
    {
        return $post;
    }

    return [];
}

print_r(getPost());