Slack - zavolání funkce pomocí url – PHP – Fórum – Programujte.com

Zdravím,

mám tento script  

 public function sendTo($channel,$message){

        $ch = curl_init();

        curl_setopt($ch, CURLOPT_URL,"https://hooks.slack.com/services/...");

        curl_setopt($ch, CURLOPT_POST, 1);

        curl_setopt($ch, CURLOPT_POSTFIELDS,

                    'payload={"username":"Bot","text":"'.$message.'","channel":"'.$channel.'"}');


        // receive server response ...

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

        $server_output = curl_exec ($ch);

        curl_close ($ch);

        // further processing ....

        //if ($server_output == "OK") { ... } else { ... }


    }

a potřebuji, aby fungoval tak, že když zadám url: http://example.com/my-script.php?…

tak to pošle zprávu na slack.

Děkuji za pomoc :)

?text=nejakytext
<input name="text">
<?php
$ch = 0;
$msg = isset($_GET['text']) ? $_GET['text'] : '';
if ($ch>=0 && $msg != '') { sendTo($ch,msg); }
?>