OK, here's the deal:
User clicks button to send sms out, about 15 to 70 at a time.
php on my site sends data to sms company's site which processes the message sending
meanwhile, my site is left inactive and waiting for a response.
After timeout of 30 seconds, I get an internal 500 error.
I cannot change timeout period (shared server).
Is there any way I can fool my website into thinking it is doing something, until all the messages have been sent?