Json plus post plus curl in PHP

Question

Please don't close this question before read my actual problem. I have seen many related problems but I am still having. Simply I want to send a json_encoded array by POST method using CURL in PHP. When I set content-type as application/json the data is not posted. I receive empty post array. When I remove content-type line the data is posted but not as json. Here is my code

 $data = array('id' => $post['id'], 'action' => $post['action']);
 $post_data = http_build_query($data);
 curl_setopt($ch, CURLOPT_URL, $url);
 curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
 curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($post_data));

I this case I receive empty post. If I comment out the line curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json')); I will receive the post data but not json encoded. I want json_encoded array. Will any one tell me what am I doing wrong?

Best Regards:

Are you certain the target resource allows you to request the response format? — Madbreaks
– Madbreaks, Commented Dec 8, 2012 at 18:36
I am sending request to my other controller. How can I come to know that target resource allows or not? — Awais Qarni
– Awais Qarni, Commented Dec 8, 2012 at 18:39

Musa · Accepted Answer · 2012-12-08 18:41:52Z

1

You are encoding a query string to json not an array remove $post_data = http_build_query($data); and pass $data to json_encode.

 $data = array('id' => $post['id'], 'action' => $post['action']);
 curl_setopt($ch, CURLOPT_URL, $url);
 curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
 curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));

ofcourse for this to work the service nedds to support json posts.

answered Dec 8, 2012 at 18:41

Musa

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4 Comments

Awais Qarni Over a year ago

When I remove http_build_query($data), even then request is not posted. Empty post

Awais Qarni Over a year ago

What is meant by the service nedds to support json posts.? How can I come to know whether the supports or not?

Musa Over a year ago

@AwaisQarni use json_decode(file_get_contents("php://input"), true) to get the posted data.

Awais Qarni Over a year ago

If I want to check whether the posted data is json encoded or not? I am checking if (is_object(json_decode($post))) but now how can I?

Dmitry Bergstein · Accepted Answer · 2012-12-08 18:42:08Z

1

Try send-n-accept RAW POST request, via

<?php $postdata = file_get_contents("php://input"); ?>

RAW POST

answered Dec 8, 2012 at 18:42

Dmitry Bergstein

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