php - SMS Gateway setup from localhost server -

i have server computer windows os , mysql database installed.it contains php program has sms sending feature, runs through zend server , apache. server computer connected other client computer networking. client uses internet explorer use php program.

the server has constant internet clients doesn't. thing sms gets delivered if client computer has active internet connection. means whoever using program main server client has have internet connection, no matter if server has internet or not.

i don't want share internet connection clients want them able send sms through program. want if server has internet if client server requesting send sms program use internet server , sen sms.

is there coding or solutions doing that?