This howto will show you how to install playSMS 1.4.2 on Ubuntu 18.04, the latest version as of today. By using Ubuntu 18.04 as base distribution you can test whether or not playSMS 1.4.2 work properly with PHP 7.2 and MySQL 5.7.
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Shameless plug: Notice the referral link there ? Yes, please click it so that you can earn USD 10 credit on DigitalOcean (for testing this howto maybe?) and when you actually use and spent money on DigitalOcean then I’ll also get something from them too :)
Q: Can I install on different server other than DigitalOcean ?
A: Yes of course, you need Internet and preferably CLI root access