PHP Forwarding JSON Object

Question

For security reasons I have to forward a JSON Object from a Jquery Script to a PHP Script. Here is what I have done yet:

<?php
header('Access-Control-Allow-Origin: *');

$input = @file_get_contents('php://input');
$content = json_encode( $input );

$url = $_GET["trakt_url"]."KEY";

$ch = curl_init($url);                                                                 
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");                                                                     
curl_setopt($ch, CURLOPT_POSTFIELDS, $content);                                                                  
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);                                                                      
curl_setopt($ch, CURLOPT_HTTPHEADER, array(                                                                          
    'Content-Type: application/json')                                                                       
);                                                                                                                   

$result = curl_exec($ch);
echo $result;
?>

If I log the $content I get the JSON Object but the page($url) at where I post to is getting an empty Object. Does someone have an idea what I am doing wrong?

Solved (someone answered correctly but the answer is deleted?!)

curl_setopt($ch, CURLOPT_POSTFIELDS, "json=$content");

Set the content length.

PeeHaa
– PeeHaa

2013-02-23 13:32:32 +00:00
Commented Feb 23, 2013 at 13:32 — PeeHaa
– PeeHaa, Commented Feb 23, 2013 at 13:32

hohner · Accepted Answer · 2013-02-23 13:46:44Z

1

Try setting the content-length in the request header:

curl_setopt($ch, CURLOPT_HTTPHEADER, array(                                                                          
    'Content-Type: application/json',                                                                                
    'Content-Length: ' . strlen($content))                                                                       
);

You will also need to make sure POSTFIELDS is defined as a urlencoded string, since setting it as an array will override the content-type to multipart/form-data. This will work:

curl_setopt($ch, CURLOPT_POSTFIELDS, "json=$content");

edited Feb 23, 2013 at 13:46

answered Feb 23, 2013 at 13:32

hohner

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1 Comment

hohner Over a year ago

@SimonSchubert Also try this approach

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