curl to php conversion, array + json - php

Question

I have this curl code i need to convert it to php
curl -H "Content-Type: application/json" -d '{"command":"sendoffer",
"steamID":"###############","token":"lkTR4VG2", "itemIDsToRequest":["4942877123","4892501549"],
"message": "Message"}' http://website:1337/
As you can see there is an array along with normal json.
"itemIDsToRequest":["4942877123","4892501549"]
I looked at many question like this and this, but couldn't understand how to implement it.
Im sorry im very new to curl command.

Answer 1

the array is part of a JSON string that is not interpreted but used as plain string data in CURL so it does not really matter what is in there; use the very same JSON string as from your commandline example, so:
$data = '{"command":"sendoffer", "steamID":"###############","token":"lkTR4VG2", "itemIDsToRequest":["4942877123","4892501549"], "message": "Message"}'
curl_setopt($ch, CURLOPT_POSTFIELDS, $data );
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));

Answer 2

If your array is
$data = array("command"=>"sendoffer", "steamID"=>"###############","token"=>"lkTR4VG2", "itemIDsToRequest"=>array("4942877123","4892501549"),"message"=>"Message");
Then send it on its way as json format with curl like that :
$url = 'http://website:1337/';
$ch = curl_init( $url );
// Convert array to json string
$data_json = json_encode( $data );
curl_setopt( $ch, CURLOPT_POSTFIELDS, $data_json );
// Indicate in the header that it is json data
curl_setopt( $ch, CURLOPT_HTTPHEADER, array('Content-Type:application/json'));
// Send request
$result = curl_exec($ch);
curl_close($ch);