Sending Email with Mailgun via HTTP Request using Curl - api

Question

I am having some issue running the api to send email with attachment via Mail Gun.I tried to run the api via postman and it runs perfectly fine so i know there is no problem with the api but i am unable to send a request via code.
I have added a code sample below:
<?php
$curl_post_data=array(
'from' => 'Excited User <noreply#test.com>',
'to' => 'test#gmail.com',
'subject' => 'Hello',
'text' => 'test'
//,'attachment[1]' => '#https://www.smsglobal.com/docs/HTTP-2WAY.pdf'
,array( 'attachment' => 'https://www.smsglobal.com/docs/HTTP-2WAY.pdf')
);
$service_url = 'https://api.mailgun.net/v3/test.com/messages';
$curl = curl_init($service_url);
curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($curl, CURLOPT_USERPWD, "api:key-testtesttesttes");
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $curl_post_data);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
$curl_response = curl_exec($curl);
$response = json_decode($curl_response);
curl_close($curl);
var_dump($response);
?>

Answer 1

I was able to solve the issue.
My Findings:
1-) You cannot give a live url address as attachment http://test.com/images/logo.png will not work.
2-) only address of files hosted on the server can be given
/var/images/logo.png
<?php
$filePath='#0Wealth_AC_AMF.pdf';
$curl_post_data=array(
'from' => 'Excited User <noreply#test.com>',
'to' => 'test#gmail.com',
'subject' => 'Hello',
'text' => 'test',
'attachment[1]' => $filePath
);
$service_url = 'https://api.mailgun.net/v3/test.com/messages';
$curl = curl_init($service_url);
curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($curl, CURLOPT_USERPWD, "api:key-test");
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $curl_post_data);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
$curl_response = curl_exec($curl);
$response = json_decode($curl_response);
curl_close($curl);
var_dump($response);
?>