A complete script that grabs SendGrid Stats and displays them

WebAPIstats.php

<?php
$url = 'http://sendgrid.com/';
$user = 'SG_username';
$pass = 'SG_password';
$days = 'x';
         
$params = array(
        'days'      => $days,
        'api_user'  => $user,
        'api_key'   => $pass
        );
 
$request =  $url . 'api/stats.get.json';
 
// Generate curl request
$session = curl_init($request);
       
// Tell curl to use HTTP POST
curl_setopt ($session, CURLOPT_POST, true);
// Tell curl that this is the body of the POST
curl_setopt ($session, CURLOPT_POSTFIELDS, $params);
// Tell curl not to return headers, but do return the response
curl_setopt($session, CURLOPT_HEADER, 0);
curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
// obtain response
$response = curl_exec($session);
curl_close($session);
         
$decoded_file = json_decode($response, true);
       
for ($i = 0; $i <= $days; $i++) {
        ?>
        <h4>Date: <?php echo $decoded_file[$i]['date'];?> </h4>
        <h5>Sent: <?php echo $decoded_file[$i]['delivered'];?> </h5>
        <h5>Opened: <?php echo $decoded_file[$i]['opens'];?></h5>
        <?php  
        }
exit();
?>