Embed Quick Chat into my web site using PHP

You advise:

<?php
global $quick_chat;
if(is_object($quick_chat) && method_exists($quick_chat, 'quick_chat')){
    echo $quick_chat->quick_chat(400, 'default', 1, 'left', 0, 0, 1, 1, 1, 1); ?>
}
?>

But in this case appears 500 error. In fact, you have a little mistake, so it is necessary:

<?php
global $quick_chat;
if(is_object($quick_chat) && method_exists($quick_chat, 'quick_chat')){
echo $quick_chat->quick_chat(400, 'default', 1, 'left', 0, 0, 1, 1, 1, 1);} ?>