AngularJs - PHP POST issue - php

Question

I am trying to make a post request with angularjs to php. The post response is always 200 OK and the returned 'data' variable in the response is empty always. I am kind of new at this as you can see, what am I doing wrong here?
AngularJs code:
$scope.postData = function(){
$http.post('send.php', $scope.data).then(function(response){
console.log(response);
});
}
PHP:
$form_data = json_decode(file_get_contents("php://input"));
$data = array();
$error = array();
if(empty($form_data->fullName)){
$error["fullName"] = "Your name is required";
}
if(empty($form_data->email)){
$error["email"] = "Your email is required";
}
if(empty($form_data->message)){
$error["message"] = "Message is required";
}
if(!empty($error)){
$data["error"] = $error;
} else {
$data["message"] = "Ok";
}

Answer 1

You need to echo data back to the client, in your code you not returning anything back hence the response is empty.
<?php
$form_data = json_decode(file_get_contents("php://input"));
$data = array();
$error = array();
if(empty($form_data->fullName)){
$error["fullName"] = "Your name is required";
}
if(empty($form_data->email)){
$error["email"] = "Your email is required";
}
if(empty($form_data->message)){
$error["message"] = "Message is required";
}
if(!empty($error)){
$data["error"] = $error;
} else {
$data["message"] = "Ok";
}
echo json_encode($data); // return data back to the client