How to encrypt and decrypt password in php mysql

to securely encrypt and decrypt passwords in php with mysql, it's essential to follow best practices for password management. first, never store passwords in plaintext; instead, use hashing techniques. php provides built-in functions like `password_hash()` for hashing passwords, which employs strong algorithms such as bcrypt. when a user creates or updates a password, hash the password before storing it in the mysql database.

for verification during user login, retrieve the hashed password from the database and use `password_verify()` to compare the stored hash with the entered password. this process ensures that even if the database is compromised, the actual passwords remain secure.

avoid using reversible encryption methods for passwords, as they can be decrypted. instead, focus on hashing, which is a one-way function. regularly update your hashing algorithms and keep your php and mysql versions up to date to protect against vulnerabilities.
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