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Let us use php/mysql to send push notification from a server. I will give you a ubuntu linux server.
You can setup the test app there and save the device info users contacts info (phone,email,birthday,address and other available info) and create the appropriate setup for sending push notifications by GCM from the server.
For this test job, I require an outline of the steps that you take up to setup so that our technical support be able to reproduce if necessary and the instructions about what to test and how.