How to generate random password using PHP and MySQL

Today, we will learn how to generate random password using PHP and MySQL. In this article, we will show you how to generate random passwords from the given specific string.

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Sometimes it’s required to auto generate secure passwords for user registration or in some other place. So we will show you how to do it.

1. Create signup form

Here, we will create a file named `signup.php` for simple signup form. Also we have to pass another file in the action of the form.

signup.php

<html>
<head>
<title>Simple Signup Form</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>

<div id="container">

<h2>Generator Random Password </h2>
<form method="post" action="generate_password.php">
 <input type="text" name="name" class="form-control" placeholder="Enter Name" placeholder="Enter Name">
 <br>
 <input type="text" name="email" class="form-control" placeholder="Enter Email">
 <br>
 <input type="submit" name="signup" value="DO SIGNUP">
</form>
</div>

</body>
</html>

2. PHP code to generate random password

Now we will create a file named `generate_password.php` and write PHP code for data connection, create function to generate random password and encrypt the generated password to save into database.

generate_password.php

<?php

// database connection
$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = '';
$db = 'test';
$conn = mysqli_connect($dbhost, $dbuser, $dbpass , $db) or die($conn);

// create function for generate random password
function generate_password($len = 8){
	$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
	$password = substr( str_shuffle( $chars ), 0, $len );
	return $password;
}

// insert into database
if(isset($_POST['signup'])) {
	$name=$_POST['name'];
	$email=$_POST['email'];
	$password = generate_password();
	$encpt_password= sha1($password);
	mysqli_query($conn, "insert into registration (name, email, password) values ('$name', '$email', '$encpt_password')");
	echo "Your Password Is : ".$password;
}

?>

// Output: Your password is: 4GQnHTN8

That’s it for today.
Thank you for reading. Happy Coding!

How to generate random password using PHP and MySQL

Steps to generate random password

1. Create signup form

2. PHP code to generate random password

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