使用PHP中的JSON字符串发送Http post请求

Question

Here is my code,

$url= 'http://dummyhost:8080/admin/EditSubscriber?jsonString={"sub_Id":3,"sub_Fname":"messi","sub_Lname":"lionel"}';
$data_string="";
$request = new HTTPRequest($url, HTTP_METH_POST);
$request->setRawPostData($data_string);
$request->send();    
$response = $request->getResponseBody();
$response= json_decode($response, true);

at the end of url JSON string is concatenated according to server requirement but in response there is nothing i get in response variable. What is wrong with this as when i make this request using chrome extension it shows me the result updated. And when i use the $url= "http://dummyhost:8080/admin/ViewSubsriber?jsonString={"sub_Name":"messi","sub_Password":"password"}"; i get the desired result. i've used curl as well'

i've used Curl as well like this

$ch = curl_init($url);                                                                      
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");                                                                     
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);                                                                  
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);                                                                      
curl_setopt($ch, CURLOPT_HTTPHEADER, array(                                                                          
'Content-Type: application/json',                                                                                
'Content-Length: ' . strlen($data_string))                                                                       
);                                                                                                                   
$result = curl_exec($ch);                            
curl_close($ch);
$json_result = json_decode($result, true);

but the same result i get that is nothing

Answer 1

If you have created JSON string at your own keep following things in mind:
Space in string might result in unnatural behavior from server so for each of the varible or atleast for strings use

urlecode(yourvariable);

then chek the string online wether the JSON string is valid or not like this http://json.parser.online.fr/

Like Brant says use

$json = file_get_contents('php:://input');

for raw data instead of using the empty $data_string="";