https://dev.telstra.com/content/500-when-posting-php

telstraSMS

<?php 
$myClientID = "myclientid";
$MyKey = "mykey";
$xml = file_get_contents("https://api.telstra.com/v1/oauth/token?client_id={$myClientID}&client_secret={$MyKey}&grant_type=client_credentials&scope=SMS");
$json_a = json_decode($xml, true);
$access_token = $json_a["access_token"];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api.telstra.com/v1/sms/messages");
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$header= array ('Accept: application/json',
                'content-type: application/json; charset=utf-8',
                'Authorization: ' . sprintf('Bearer %1$s', $access_token));
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
$data= array('to' => '0412345678', 'body' => 'Hello');
$json_string = json_encode($data);
curl_setopt($ch, CURLOPT_POSTFIELDS,$json_string);
$result = curl_exec($ch);
echo $result;
?>