Create HTTP GET Header Request - php

Question

I am using php and I want to create a HTTP request to access some API data. I have a document that says, I need to place the following request
GET /abc/api/Payment HTTP/1.1
Content-Type: application/x-www-form-urlencoded
X-PSK: [App Key]
X-Stamp: [UTC Timestamp]
X-Signature: [HMACSHA256 base 64 string]
Body:
var1, var1
I have app key, I can get UTC Timestamp and I can create signature. I am not sure how to start creating this request? I am using codeingiter. If someone can help with example to set the header and body?
I also tried this url https://www.hurl.it/ to place requests but can't make it work. Any suggestions?

Answer 1

You want to use cURL's CURLOPT_HTTPHEADER option.
http://php.net/manual/en/function.curl-setopt.php
This should get you started
function request($url) {
$ch = curl_init();
$curlOpts = array(
CURLOPT_URL => $url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => array(
"Content-Type: application/x-www-form-urlencoded",
"X-PSK: [App Key]",
"X-Stamp: [UTC Timestamp]",
"X-Signature: [HMACSHA256 base 64 string]"
),
CURLOPT_FOLLOWLOCATION => true
);
curl_setopt_array($ch, $curlOpts);
$answer = curl_exec($ch);
// If there was an error, show it
if (curl_error($ch)) die(curl_error($ch));
curl_close($ch);
return $answer;
}