Great tutorial! Not sure if anyone else ran into this, but I ended up needing https instead of http to get a response.

$url_to_check = "https://isitup.org/".$text.".json";

David,

Further to twitter DMs, thought I would outline my issues and see if you had any ideas for a noddy newbie:

• Read your article in detail
• Copied your code (inc. https & slack token id) to my 1&1 server
• Successfully connected script to slack - http://3a2.co.uk/slack/isitup/isitup.php
• php is installed: http://3a2.co.uk/slack/isitup/phpinfo.php
• cURL is available: http://3a2.co.uk/slack/isitup/cURL.php
• isitup is up: https://isitup.org/amazon.com.json
• yet every time I /isitup in slack I get "Ironically, isitup could not be reached"

it feels like cURL might to blame, just not sure how to trouble shoot? or what to look for.

Any thoughts gratefully received.

Toby

You mentioned that you will explore sending the response to Slack as a public slash command reply or through an incoming webhook, which gives you more options for formatting and allows you to send the reply to any channel for everyone on the team to see. Does that mean users will be able to access the public slash command and interact with it from any channels?