Generate and restore password hash #php #password #hash

password.php

// Save a password hash:
// ======================

$options = [
    'cost' => 11,
];

// Get the password from post
$passwordFromPost = $_POST['password'];
$hash = password_hash($passwordFromPost, PASSWORD_BCRYPT, $options);

// Now insert it (with login or whatever) into your database, use mysqli or pdo!

// Get the password hash:
// ======================

// Get the password from the database and compare it to a variable (for example post)
$passwordFromPost = $_POST['password'];
$hashedPasswordFromDB = ...;

if (password_verify($passwordFromPost, $hashedPasswordFromDB)) {
    echo 'Password is valid!';
}
else {
    echo 'Invalid password.';
}