Very confused about code that was working yesterday and now not at all

[Rebecca Noonan]

So for the past couple of days I've been trying to get messages sent through an online form to send to my printer URL and automatically print. After much effort I finally got the PHP working last night and was over the moon. When I pressed send, the printer printed the latest message sent via the form. Set the printer up again a while ago and sent a message through the form..and nothing.. No new messages are appearing in my printer archive and I didn't touch or even open the PHP code on the webpage since last night when everything was working. There are no errors on the webpage when I send a message and messages are saving to the database but not sending to the printer anymore. Can anyone explain this?

Here is a video of it working last night:
https://www.youtube.com/watch?v=ltz-vinhIHg

And here's the section of PHP that was sending the messages to the archive last night:

if ($message != null) 
{$qry = "INSERT INTO names1 (name, time, date) 
VALUES ('$message', CURRENT_TIME, CURRENT_DATE);";
$insert = mysqli_query ($db, $qry);
$id = mysqli_insert_id($db);
$printer_id = '6g2o1s6t0f4e7v4a';
$print_url = 'http://printer.exciting.io/print/' . $printer_id;
$fields = array(
'content' => ( '<h1>' . $message . '</h1>')
);


function http_post_lite($url, $data) {
 
    $options = array(
        'http' => array(
            'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
            'method'  => 'POST',
            'content' => http_build_query($data),
        ),
    );
 
    $context  = stream_context_create($options);
    return $result = file_get_contents($url, false, $context);
 
}
  
 $response = http_post_lite($print_url, $fields);
  
  }

[Rebecca Noonan]

I've also just noticed that even test pages or HTML I send in my own printer backend directly (http://printer.exciting.io/my-printer/6g2o1s6t0f4e7v4a) aren't even appearing in my archive. Is there a problem with the server maybe?

[James Adam]

I've just restarted the server - try again now?

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[Rebecca Noonan]

Seems to be working now. I was going mad. Thank you!