php - Edit and redirect a post request with json

Question

For my project, i'm trying to get the post request on my index.php, edit it with some random values, and then redirect it to another page.

I tried the following:

----------- POST REQUEST -----------

Array
(
    [authToken] => 0a65e943412453ecec35c814
    [sessionId] => 431503466924
    [answers] => [{"Boost":false,"answerTime":1300,"id":3},{"Boost":false,"answerTime":800,"id":1},{"Boost":false,"answerTime":900,"id":3},{"Boost":false,"answerTime":1000,"id":1},{"Boost":false,"answerTime":1200,"id":1}]
    [userId] => 2235
)

----------- POST REQUEST -----------

My index.php

<?php
$time=[800,900,1000,1100,1200,1300,1500];
$array = json_decode($_POST['answers'], true);
foreach($array as &$k)
{
    $k['answerTime'] =$time[array_rand($time)];
}

$postpop = json_encode($array);

$url = 'http://127.0.0.1/index2.php';

$ch = curl_init();

curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_POST,count($postpop));
curl_setopt($ch,CURLOPT_POSTFIELDS,$postpop);

$result = curl_exec($ch);

curl_close($ch);

?>

By doing that, i only get the [answers] on my response. How can i get to recompile the full request?

Answer 1

It looks like you are simply failing to reassemble all the parts. Store the POST, manipulate the answer element, and then replace that part.

<?php

$time = [800,900,1000,1100,1200,1300,1500];

//Store the full post as received.
$originalPost = $_POST;

$array = json_decode($_POST['answers'], true);
foreach($array as &$k) {
    $k['answerTime'] = $time[array_rand($time)];
}

//replace just the part of the array we manipulated
$originalPost['answers'] = json_encode($array);

$url = 'http://127.0.0.1/index2.php';

$ch = curl_init();

curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_POST,count($originalPost));
curl_setopt($ch,CURLOPT_POSTFIELDS,$originalPost);

$result = curl_exec($ch);

curl_close($ch);