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How to send correct data types using ajax?

I want send correct data types to server using ajax, I mean, I want server received boolean as boolean, integer as integer (not string) and so on...

I tried this, but server receives empty array when I check $_POST.

$_POST

params = "firts_step":true;

$.ajax(

contentType: "application/json",
type: "POST",
url: "url_here",
data: JSON.stringify(params),
success: function(msg)



);


if try this:

params = "firts_step":true;

$.ajax(

type: "POST",
url: "url_here",
data: params,
success: function(msg)



);


then there is data in $_POST array, though all values have string data type.

$_POST

4 Answers
4

I don't know why you add two data objects to the ajax call. Remove the one without json.stringify and try this from the php side,

data

json.stringify

$data = json_decode(file_get_contents('php://input'), true);
print_r($data);
echo $data["firts_step"];


If you select JSON as your content type, you will only be able to send data with the types specified by the JSON documentation. Also, before parsing your JSON make sure your object has the correct data types.

Because HTTP is a text protocol with no concept of booleans or integers everything must be stringified

for booleans test this

params = "firts_step":true ? 1 : 0;


and in php

$x = ($_POST['firts_step'] == 1 ) ? true : false;


or

params "firts_step":"TRUE" ;


and in php

$x = ($_POST['firts_step'] == "TRUE" ) ? true : false;


good luck

In php for boolean you can use the filter_var

example:

$params['first_step'] = filter_var( $params['first_step'], FILTER_VALIDATE_BOOLEAN);


here the manual: http://php.net/manual/en/function.filter-var.php

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