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PDO (PHP Data Objects) is the newest and most robust of them.
PDO has a consistent interface across many different types of database, uses an object-oriented approach, and supports more features offered by newer databases.
If that’s the case, Hashing is the standard way of protecting a user’s password before it’s stored in a database.
Many common hashing algorithms like md5 and even sha1 are unsafe for storing passwords, because hackers can easily crack passwords hashed using those algorithms.
This document was last reviewed on January 25, 2019. Drop me a line if you think I can help you with something, or with suggestions or corrections to this document.Because of its long history, you’ll find lots of tutorials on how to do basic things like password hashing and database access.The problem is that out of five tutorials, you have a good chance of finding five totally different ways of doing something. Do any of the other ways have subtle bugs or gotchas?It points to what we consider the state-of-the-art of PHP.However, this means that if you’re using an older version of PHP, some of the features required to pull off these solutions might not be available to you.