index.php

<?php

// first create a new voice chat room:

$options = array(
    'http' => array(
        'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
        'method'  => 'POST',
        'content' => http_build_query(array()),
    )
);
$context = stream_context_create($options);
$result = file_get_contents("http://voicechatapi.com/api/v1/conference/", false, $context);
 
if (!$result) $message = "Unable to create a room (no VoiceChatAPI response)";
else 
{
	$info = json_decode($result);
	$url = $info->conference_url;
	if (!$url) $message = "Unable to create a room (invalid VoiceChatAPI response)";
	else $message = "Your room is ready: <$url>";
}

// then send the voicechatapi room url to the current slack room:

if (!$_POST["channel_id"]) die("Missing Slack channel_id");
 
$data = array(
	"token" => "your slack API token here",
	"channel" => $_POST["channel_id"],
	"text" => $message,
	"username" => "Voice Chat API Bot"
);
 
$options = array(
    'http' => array(
        'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
        'method'  => 'POST',
        'content' => http_build_query($data),
    )
);
$context = stream_context_create($options);
$result = file_get_contents("https://slack.com/api/chat.postMessage", false, $context);
 
if (!$result) $message = "Unable to send message (no Slack API response): $message";
else 
{
	$info = json_decode($result);
	if (!$info->ok) $message = "Unable to send message (invalid Slack API response): $message";
}

// APIs FTW!

?>