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phpliteauth

Small authentication library for PHP, using SQLite as a database backend

Installation

composer require tlucas/liteauth

In the project file (e.g. project.php) you wish to use it in make sure you have

require_once('vendor/autoload.php');

Then initialise the authentication object with:

$auth = new liteAuth\liteAuth('path/to/my/auth_database.db');

(Of course, you can call the object anything, but for the rest of this readme, we will assume you called it $auth)

Basic usage

User creation

The very first thing you will have to do, before logging in to liteAuth, is, of course, create a user.

This is done using:

$auth->newUser($user, $pass, $email, $fname, $sname, $admin);

Only the $user and $pass parameters are required, the rest are optional.

So, to give an example:

$auth->newUser('John', 'superstrongpassword');

We now have a user called John in the database, with the password superstrongpassword.

(If newUser() is successful it returns the new user's id , otherwise, it returns False)

(The other fields should be self-explanatory, with the posssible expception of the $admin. This is simply a True/False field, it has no special meaning within liteAuth, so you are free to use it however you will!)

From a form

There is also included a helper method registerFromPost(), to allow for easy registration form creation.

Place it at the target of a form, and it will look for the relevant post variables, to register a new user.

For example, you might have a file register.php containing

$auth->registerFromPost();

And another file signup.html:

<form action="register.php" method="post">
<input type="text" name="user" placeholder="Username"><br>
<input type="text" name="fname" placeholder="First name"><br>
<input type="text" name="sname" placeholder="Surname"><br>
<input type="email" name="email" placeholder="Email Address"><br>
<input type="password" name="pass" placeholder="Password"><br>
<input type="password" name="pass2" placeholder="Password"><br>
<input type="checkbox" name="admin"> Admin?<br>
<input type="submit" value="Register">
</form>

The register.php will take the data from signup.html and create a new user corresponding to the input.

BE CAREFUL: Anyone with access to the script calling registerFromPost() will be able to create a new user. Make sure this is only accessible by people who should have this authority!

One example would be to require an admin user to be logged in:

register.php:

if($auth->user->admin)
    $auth->registerFromPost();

Logging in

Logging in is very similar to creating a user, you have the login() method you can call:

$auth->login($user, $pass);

After which, if the password correctly matches the user, it will return True and populate $auth->user

The following properties are available on the user object, once logged in:

$auth->user->user       // User's username
$auth->user->first_name     // User's first name, if set
$auth->user->surname        // User's surname, if set
$auth->user->email      // User's email address, if set
$auth->user->admin      // If the user is set as an admin

There is also the special method

$auth->name()

Which returns either the user's human name (ie. 'Firstname surname' or 'Firstname'), or falls back to username.

From a form

Just like with registration, there is a helper method for logging in from a form:

$auth->loginFromPost();

If you put that in, for example, login.php, the form at loginform.html:

<form action="login.php" method="post">
<input type="text" name="user" placeholder="Username"><br>
<input type="password" name="pass" placeholder="Password"><br>
<input type="submit" value="Login">
</form>

Will pass the appropriate values to sign in.

Modifying a user

To modify an existing user, you can edit any of the accessible properties, listed above, for example

$auth->user->first_name = 'Stephen';

And then call

$auth->user->save();

And it will update the current user's first name to Stephen in the database.

Other methods

$auth->countUsers();

Returns a count of users that exist in the database

$auth->existUsers();

Returns False if no users exist (This is useful to allow for 'first run' setup procedures)