After trying your suggestion, thank you by the way, I finally figured it out:
$myItem->BCC=$email_list;
Works like a charm!
It's funny how you would never guess it's so simple...
I really wish there was some sort of guide for how to use com with outlook and php. It's one thing in vb but totally different when php is calling it.
Now I just have to figure out how to attach a file with php, but for now I'll just use outlook because the email is open anyhow... 🙂