What is password control in php?

When the user provides their account password, it is always recommended to validate the input. Password strength validation is very useful to check whether the password is strong. A strong password makes the user’s account secure and helps to prevent account hacking.

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What is the purpose of PHP password control?
What is password default in PHP?
What is password salt in PHP?
Is it safe to store password in PHP?

Using Regex (Regular Expression), you can easily validate the password strength in PHP. In the example code, we will show you how to check password strength and validate a strong password in PHP using Regex.

The following code snippet validates the password using preg_match() function in PHP with Regular Expression, to check whether it is strong and difficult to guess.

Password must be at least 8 characters in length.
Password must include at least one upper case letter.
Password must include at least one number.
Password must include at least one special character.

// Given password
$password = 'user-input-pass';// Validate password strength
$uppercase = preg_match('@[A-Z]@', $password);
$lowercase = preg_match('@[a-z]@', $password);
$number    = preg_match('@[0-9]@', $password);
$specialChars = preg_match('@[^\w]@', $password);if(!$uppercase || !$lowercase || !$number || !$specialChars || strlen($password) < 8) {
    echo 'Password should be at least 8 characters in length and should include at least one upper case letter, one number, and one special character.';
}else{
    echo 'Strong password.';
}

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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 'dbconn.php';

if (isset($_POST['submit'])){

$username = $_POST['username'];

$pass = $_POST['password'];

$secure_pass = password_hash($pass, PASSWORD_BCRYPT);

$sql = "INSERT INTO login_tb (u_username, u_password)

VALUES('$username', '$secure_pass')";

$result = mysqli_query($conn, $sql);

}

include 'signup_form.php';

?>

Output:Password In Database.

What is the purpose of PHP password control?

Password protect your content with Web Page Password Protect by just adding one line of PHP code to your page source. Script will present user with password entry form, and will not let visitor see your private content without providing a password.

What is password default in PHP?

PASSWORD_DEFAULT - Use the bcrypt algorithm (default as of PHP 5.5. 0). Note that this constant is designed to change over time as new and stronger algorithms are added to PHP. For that reason, the length of the result from using this identifier can change over time.

What is password salt in PHP?

What is a salt? A cryptographic salt is data which is applied during the hashing process in order to eliminate the possibility of the output being looked up in a list of pre-calculated pairs of hashes and their input, known as a rainbow table.

Is it safe to store password in PHP?

The best way is to store password above your root directory. If you decide to have password in php file then no body would able to view because php files are excuted in the server. But if the server does not support php then those files will be delivered as text files and any one can see the password.