PHP - Need Help With A Webhook From Discord

Hey people of php freaks recently, I've been having issues changing a discord webhook [curl] post request to a website [curl] post request. My knowledge in PHP is very limited so, I really would appreciate some help

This is the function:

function postToDiscord($message)
{
    $data = array("content" => $message, "username" => "Payouts Bot");
    $curl = curl_init("https://discordapp.com/api/webhooks/591662537293168650/eyme87xmCuKne4njucoDSqzojq78NaS9x7t4sgP9m-l5EmrvUeZegkM4wok-L-UdBDxo");
    curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "POST");
    curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($data));
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    return curl_exec($curl);
}

Currently the discord bot transfers the message into a discord channel and, I do not want that. I want it to transfer it onto a website page. As, I said i'm not very keen on this so please help me.