I installed the ppa:ondrej/php repository for php and performed an apt-get upgrade. Little did I know it had a lot of libraries packages installed that I have no idea about, so I was wondering if they are safe to stay on the system or not?
2 Answers
The PPA is maintained by Ondřej Surý, a Debian developer who has been packaging PHP for Debian since PHP 5. It's up to you whether that fits your own definition of "safe", whatever that is.
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Sadly, you'll never know. When using Personal Package Archive (PPA) you're by your own.
There's a post which explains with more detailed caveats :