CODEWITHSUNDEEP
phpapihttp-postpostman
Prince H
Prince H

Reputation: 95

Undefined index in $_POST

I am using postman to post data to very small php script. When I am trying to dump $_POST, its having some data but it gives me error when I am trying to access the variable in $_POST.

PHP Script

<?php
  header("Access-Control-Allow-Origin: *");
  var_dump($_POST);
  $txt = $_POST['result'];
 ?>

Raw Input in Postman

{"result":"sfd"}

Output

array(1) { ["{"result":"sfd"} "]=> string(0) "" } 
Notice: Undefined index: result in C:\xampp\htdocs\apis\index.php on line 4

Whats happening here?

Upvotes: 2

Views: 3466

Answers (3)

Ajay Kumar
Ajay Kumar

Reputation: 1352

You are getting a JSON string in arrey it can't be accessed like that first you have to decode it

like

as Array

$result = json_decode($_POST, true)
$txt = $result['result']; // text

as Object

$result = json_decode($_POST)
$txt = $result->result; // text


suggestion

if your making request through jQuery ajax, i think you are using JSON.stringify() OR similar method to convert to string so instead of using JSON.stringify() just post as it is. so in this case you no need to using json_decode().

For example 

var data = {"result":"sfd"};

// data = JSON.stringify(data); // don't use this

$.ajax({
    url : url,
    data : data,
    ...
});

Upvotes: 2

SamHecquet
SamHecquet

Reputation: 1836

The answer is in a json format, you need to decode it in order to access to this index.

<?php
  header("Access-Control-Allow-Origin: *");
  var_dump($_POST);
  $result = json_decode($_POST, true)
  $txt = $result['result'];
?>

Upvotes: 0

underscore
underscore

Reputation: 6887

use isset function check

<?php
    header("Access-Control-Allow-Origin: *");
    if(isset($_POST['result'])){
        $txt = $_POST['result'];
    }
 ?>

Upvotes: -1

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