how to ugrading to php 7.1

Installing my Dolibarr
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Thank You so much @natureclean
Really appreciate it.

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it really depends how you have initially installed PHP 5. did you installed and working with IIS or you are using a WAMP server. If it is a test system I suggest to reinstall everything for faster results. contact me privately if you want a low cost production dolibarr SAAS solution

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  1. May be not too fast! Note that PHP 7.1 comes with some backward incompatibility changes, so make sure to check everything and have backups. …
  2. Add ondrej/ php PPA. Ubuntu. …
  3. List your current PHP packages. …
  4. Install PHP 7.1 . …
  5. Test if PHP version is indeed 7.1 . …
  6. Remove old 7.0 packages.
    Have you tried doing this?
    Regards,
    Lewis