How to secure database passwords in PHP?

Most of the websites are providing sing up and login facility to the user. User has to create a password and use it for login to the website. But it is very important to secure the password of the user. password_hash() function provides the facility to securely store the password of the user to the database.

Syntax

password_hash(Password, PASSWORD_DEFAULT)

Example: First parameter Password will contain the normal password. The second Parameter will contain PASSWORD_BCRYPT to make secure otherwise it contains PASSWORD_DEFAULT as default. Let’s see the example to understand properly. 

• dbconn.php
  

php

<?php
  $db_host = "localhost";
  $db_name = "secure_pass";
  $db_pass = "";
  $db_user = "root";

  $conn = mysqli_connect($db_host, $db_user, $db_pass, $db_name);

  if (!$conn){
    die ('Failed to connect with server');
  }
?>

• Signup Form:
  

html

<form action="index.php" method="POST">
  <label for="username">Username</label>
  <input type="text" name="username" required><br><br>

  <label for="password">Password</label>
  <input type="password" name="password" required><br><br>
  <input type="submit" name="submit" value="submit">
</form>

• index.php
  

php

<?php
  //Include database connection file
  include 'dbconn.php';

  if (isset($_POST['submit'])){
    $username = $_POST['username'];

    // Normal Password
    $pass = $_POST['password'];

    // Securing password using password_hash
    $secure_pass = password_hash($pass, PASSWORD_BCRYPT);

    $sql = "INSERT INTO login_tb (u_username, u_password)
    VALUES('$username', '$secure_pass')";
    $result = mysqli_query($conn, $sql);
  }

  // Include HTML sign up form
  include 'signup_form.php';
?>

• Output:Password In Database.