sms sender software [closed]

I need to make an application that sends sms. So I want to register from my site via sms code. To do this, I need to create an app on my phone that stays online 24 hours a day. If someone registers on my site, it will be stored on the site in json format Name: name Number: phone dependent Code: code So my phone, which is online 24 hours a day, reads the json file on the site every 1 minute and has to send codes to the numbers on it. I couldn’t find the right information on the internet. I saw how to send an SMS. But I have to send sms to several people at the same time. The point is, there can be a lot of registrants out there. Who can help write the code. I’ll be mine for any help. Sorry for the errors written in the message google translator