I am trying to create a scheduling system in php that is alarming at a predetermined time ... the programming part in php / html to create a schedule and connect to the database is easy for me, but I have no idea what exact equipment I need .
It seems to me that I need some kind of device that will be connected to the web server, and to an alarm that will "translate" the php code into an electrical signal that will trigger an alarm. Does anyone have any idea what this device is? where can i get it? am i on the right track? can i find something that has php api?
in advance for your time and help
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