Slack Incoming Webhook with PHP form - php

Question

I'm trying to create a PHP script that automatically pushes text from <textarea> in my webform to Slack channel.
HTML:
<form action="http://main.xfiddle.com/<?php echo pf_file('g7f-ds0'); ?>" method="post" id="myform" name="myform">
<textarea name="text" id="" rows="3" cols="30">
</textarea> <br /><br />
<button id="mysubmit" type="submit" name="submit">Submit</button><br /><br /></form>
I managed to write a PHP script that posts hard coded message to Slack like this:
<?php
//API Url
$url = 'https://hooks.slack.com/services/T02NZ01FU/B08TTAPGE/000000000000000000';
//Initiate cURL.
$ch = curl_init($url);
//The JSON data.
$payload = array(
’text' => 'Testing text with PHP'
);
//Encode the array into JSON.
$jsonDataEncoded = json_encode($payload);
//Tell cURL that we want to send a POST request.
curl_setopt($ch, CURLOPT_POST, 1);
//Attach our encoded JSON string to the POST fields.
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonDataEncoded);
//Set the content type to application/json
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
//Execute the request
$result = curl_exec($ch);
?>
But for some reason when I try to get text from <textarea name="text" rows="3" cols="30"></textarea> and save it into a variable then it doesn't work. I add this to the beginning of PHP to set the text variable:
if(isset($_POST['submit']))
$textdata = $_POST['text'];
and then change the $payload to
'text' => $textdata

Answer 1

A simple example of how to use slack incoming webhook with curl
<?php
define('SLACK_WEBHOOK', 'https://hooks.slack.com/services/xxx/yyy/zzz');
function slack($txt) {
$msg = array('text' => $txt);
$c = curl_init(SLACK_WEBHOOK);
curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
curl_setopt($c, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($c, CURLOPT_POST, true);
curl_setopt($c, CURLOPT_POSTFIELDS, array('payload' => json_encode($msg)));
curl_exec($c);
curl_close($c);
}
?>
Snippet taken from here

Answer 2

There are two likely issues here.
The PHP formatting in your post is incorrect.
Replace ’text' => 'Testing text with PHP' with
'text' => 'Testing text with PHP'
Your curl is not set up correctly. Please see the following posts to debug curl and to fix what is likely wrong - no trusted SSL certificates