GitHub Webhook Discord filter by branch for PHP

github_webhook_filter.php

<?php

//filter githubs webhooks by using this conditional relay script
//used for discord, but also usable for other needs.
//set the webhook url in github to the public url to this php file

$headers = getallheaders();
//file_put_contents('/home/user/public_html/webhook_data.txt',  json_ensode($headers) );//debug

$rawPostBody = file_get_contents('php://input');
//file_put_contents('/home/user/public_html/webhook_data.txt', $rawPostBody );//debug

$postData = json_decode($rawPostBody, true);

if(!isset($postData['ref']) || $postData['ref'] != "refs/heads/main")return;//push main only

//discord webhook url with /github on end
$webhookurl = '';
  
$request_headers = [
	'Content-type: application/json',
    'X-Github-Event: '.$headers['X-Github-Event'],
    'X-Github-Delivery: '.$headers['X-Github-Delivery']
];

$ch = curl_init( $webhookurl );
curl_setopt( $ch, CURLOPT_HTTPHEADER, $request_headers );
curl_setopt( $ch, CURLOPT_POST, 1);
curl_setopt( $ch, CURLOPT_POSTFIELDS, $rawPostBody);
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt( $ch, CURLOPT_HEADER, 0);
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1);

$response = curl_exec( $ch );

curl_close( $ch );

//file_put_contents('/home/user/public_html/webhook_data.txt', $response );//debug



?>