When sending boolean values through Ajax call, PHP gets the value as a string

Question

Boolean value sent over Ajax (from client) becomes string on the server side:

    var ban_status = null;
    ban_status = true;

    $.ajax({
        type: 'POST',
        url: app.baseUrl + "/admin/users/api-ban-user",
        data: { "userId": user_id, "banStatus": ban_status },
        datatype: "json",
        success: function (response) {
            if (response.status === true) {
                addAlert(response.msg, 'success');
                userList();
            } else {
                addAlert(response.msg, 'error');
            }
        }
    });

In php

$banStatus = $post['banStatus'];

gettype($post['banStatus'])

returns string. How to return the boolean value.

GET or POST parameters are always strings in php, you have to cast them explicetely to number or bool or float — Pierre
– Pierre, Commented Feb 20, 2018 at 7:21

HMR · Accepted Answer · 2018-02-20 08:46:06Z

1

As mentioned; you can use json_decode in php but since the post data is a string you can send one parameter called json and stringify your object in JavaScript:

var ban_status = null;
ban_status = true;

$.ajax({
  type: 'POST',
  url: app.baseUrl + "/admin/users/api-ban-user",
  data: {json:JSON.stringify({ "userId": user_id, "banStatus": ban_status })},
  datatype: "json"
}).then(
  function (response) {
        if (response.status === true) {
            addAlert(response.msg, 'success');
            userList();
        } else {
            addAlert(response.msg, 'error');
        }
  }
).fail(//use .catch if you have a new enough jQuery
  function(err){
    console.warn("something went wrong:",err);
  }
);

In PHP:

$postedObject = json_decode($post['json']);
$banStatus = $postedObject->banStatus;

answered Feb 20, 2018 at 8:46

HMR

39.5k26 gold badges99 silver badges175 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Nikhil Solanki · Accepted Answer · 2018-02-20 07:21:23Z

0

use php typecating

$banStatus = (boolean)$post['banStatus'];
gettype($post['banStatus'])

answered Feb 20, 2018 at 7:21

Nikhil Solanki

3472 gold badges3 silver badges10 bronze badges

1 Comment

rollstuhlfahrer Over a year ago

While this code may answer the question, providing additional context regarding why and/or how this code answers the question improves its long-term value.

Csaba Gergely · Accepted Answer · 2018-02-20 07:26:48Z

0

Use 1 instead of true, and 0 instead of false in your ajax call. Or compare with strings in server side. HTTP is a text protocol everything must be stringified. (int, boolean etc.)

answered Feb 20, 2018 at 7:26

Csaba Gergely

3841 silver badge8 bronze badges

Comments

terraloader · Accepted Answer · 2018-02-20 07:51:44Z

0

The point is you wanted to send a JSON, but giving the object in "data" does not do what you want. It sends data as form elements (see network inspector)

So you have to use:

data: JSON.stringify({ "userId": user_id, "banStatus": ban_status })

to send a real json-string and decode this server side via

json_decode(file_get_contents("php://input"))

In addition: datatype: "json" is only the format option of the incoming response data to the javascript, not the type of data to be send to the server.

Best, Tim

answered Feb 20, 2018 at 7:51

terraloader

3513 silver badges10 bronze badges

Collectives™ on Stack Overflow

When sending boolean values through Ajax call, PHP gets the value as a string

4 Answers 4

Comments

1 Comment

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

1 Comment

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related