irc-to-slack.php

<?php

$msg = $_POST['msg'];
$nick = $_POST['nick'];
$user = $_POST['user'];
$icon = $_POST['icon'];

if(!preg_match('/^\[/', $nick)) {
  
  $msg = preg_replace(array('/\x03\d{1,2}/','/\x03/'), '', $msg);
  $msg = preg_replace(
    array('/(^|\s)(\/[^ ]+)/i','/\[\[([^\]]+)\]\]/'), 
    array('$1http://indiewebcamp.com$2','[[http://indiewebcamp.com/$1]]'), $msg);
  $msg = str_replace('http://indiewebcamp.com/me', '/me', $msg);
  $msg = str_replace('http://indiewebcamp.com/nick', '/nick', $msg);
  
  // Convert mentions of slack usernames "[aaronpk]" to slack format "@aaronpk"
  $msg = preg_replace('/\[([^@\ ]]+)\]/', '@$1', $msg);
  // Except [mention] and [bridgy]
  $msg = preg_replace('/^@(mention|bridgy)/', '[$1]', $msg);
  
  $payload = array(
    'text' => $msg,
    'username' => $nick,
    'icon_url' => $icon
  );
  
  $ch = curl_init($slack_hook_url);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_POST, true);
  curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array('payload'=>json_encode($payload))));
  $response = curl_exec($ch);
  
}