Slack Notifications with PHP

slack-notification.php

<?php
$ch = curl_init();
// The Webhook URL from Slack's integration detail page
curl_setopt($ch, CURLOPT_URL, 'https://hooks.slack.com/services/XXXXXXXXX/XXXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXX');
// Only disable SSL checks like this for TESTING purposes if doesn't work otherwise. Make sure your PHP SSL certificates are up to date. 
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
// Build an HTTP POST instead of a GET request
curl_setopt($ch, CURLOPT_POST, 1);
// CURL will return the actual response as text, "ok" on success
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
// Fail verbosely if Slack returns an error, use for TESTING purposes
curl_setopt($ch, CURLOPT_FAILONERROR, 1);

$payload = json_encode(array(
    "username"    =>  "Waste Seller GmbH",
    "channel"     =>  "#notifications",
    "text"        =>  "New waste entered"
));
curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);

$result = curl_exec($ch);
curl_close($ch);

Looks like this: