I know this question has been asked before, but the most recent answer I found was here in 2012, now 4 years ago. I know encryption changes, so what are the current encryption algorithms - or PHP commands - to encrypt fields?
Is there a website that would have this info, and which I could check in the future?
Edit: This is different from the question it's marked as a duplicate of because that question was asking about mysql encryption and this one is about PHP encryption. I know I caused the confusion by mistakenly linking the wrong question, but I've fixed the link to prevent further confusion.
I also found out the answer: PHP has built-in encryption algorithms that it updates with new versions.
On the more general note of what encryption algorithms are appropriate for use today: NIST's list of approved algorithms updates every few years and includes only publicly-vetted algorithms. And since writing this question, I've learned that even if using the most up-to-date algorithms, you should not implement your own (i.e. write your own code), you should instead use a crypto library. So this information is only useful for ruling out libraries/products.