PHPSupabase

PHPSupabase is a library written in php language, which allows you to use the resources of a project created in Supabase (supabase.io), through integration with its Rest API.

Content

• About Supabase
• PHPSupabase Features
• Instalation & Loading
• How to use
  • Auth Class
    • Create a new user with email and password
    • Sign in with email and password
    • Get the data of the logged in user
    • Update user data
  • Database class
    • Insert data
    • Update data
    • Delete data
    • Fetch data
    • Comparison operators
  • QueryBuilder class

About Supabase

Supabase is "The Open Source Firebase Alternative". Through it, is possible to create a backend in less than 2 minutes. Start your project with a Postgres Database, Authentication, instant APIs, realtime subscriptions and Storage.

PHPSupabase Features

• Create and manage users of a Supabase project
• Manage user authentication (with email/password, magic links, among others)
• Insert, Update, Delete and Fetch data in Postgres Database (by Supabase project Rest API)
• A QueryBuilder class to filter project data in uncomplicated way

Instalation & loading

PHPSupabase is available on Packagist, and instalation via Composer is the recommended way to install it. Add the follow line to your composer.json file:

"rafaelwendel/phpsupabase" : "^0.0.1"

or run

composer require rafaelwendel/phpsupabase

How to use

To use the PHPSupabse library you must have an account and a project created in the Supabase panel. In the project settings (API section), you should note down your project's API key and URL. (NOTE: Basically we have 2 suffixes to use with the url: /rest/v1 & /auth/v1, but since version 0.0.5 the definition of one of these suffixes is optional)

To start, let's instantiate the Service() class. We must pass the API key and url in the constructor

<?php

require "vendor/autoload.php";

$service = new PHPSupabase\Service(
    "YOUR_API_KEY", 
    "https://aaabbbccc.supabase.co"
);

//In versions 0.0.4 or earlier it is necessary to set the suffix
$service = new PHPSupabase\Service(
    "YOUR_API_KEY", 
    "https://aaabbbccc.supabase.co/auth/v1" // or https://aaabbbccc.supabase.co/rest/v1
);

The Service class abstracts the actions with the project's API and also provides the instances of the other classes (Auth, Database and QueryBuilder).

Auth class

Let's instantiate an object of the Auth class

$auth = $service->createAuth();

The $auth object has several methods for managing project users. Through it, it is possible, for example, to create new users or even validate the sign in of an existing user.

Create a new user with email and password

See how to create a new user with email and password.

$auth = $service->createAuth();

try{
    $auth->createUserWithEmailAndPassword('newuser@email.com', 'NewUserPassword');
    $data = $auth->data(); // get the returned data generated by request
    echo 'User has been created! A confirmation link has been sent to the '. $data->email;
}
catch(Exception $e){
    echo $auth->getError();
}

This newly created user is now in the project's user table and can be seen in the "Authentication" section of the Supabase panel. To be enabled, the user must access the confirmation link sent to the email.

In the third parameter of the createUserWithEmailAndPassword method you can pass an array containing the user_metadata to be saved (Ex: name and age)

$user_metadata = [
    'name' => 'Lebron James',
    'age' => '34'
];
$auth->createUserWithEmailAndPassword('lebron@email.com', 'LebronPassword', $user_metadata);

Sign in with email and password

Now let's see how to authenticate a user. The Authentication request returns a access_token (Bearer Token) that can be used later for other actions and also checks expiration time. In addition, other information such as refresh_token and user data are also returned. Invalid login credentials result in throwing a new exception

$auth = $service->createAuth();

try{
    $auth->signInWithEmailAndPassword('user@email.com', 'UserPassword');
    $data = $auth->data(); // get the returned data generated by request

    if(isset($data->access_token)){
        $userData = $data->user; //get the user data
        echo 'Login successfully for user ' . $userData->email;

        //save the $data->access_token in Session, Cookie or other for future requests.
    }
}
catch(Exception $e){
    echo $auth->getError();
}

Get the data of the logged in user

To get the user data, you need to have the access_token (Bearer Token), which was returned in the login action.

$auth = $service->createAuth();
$bearerToken = 'THE_ACCESS_TOKEN';

try{
    $data = $auth->getUser($bearerToken);
    print_r($data); // show all user data returned
}
catch(Exception $e){
    echo $auth->getError();
}

Update user data

It is possible to update user data (such as email and password) and also create/update metadata, which are additional data that we can create (such as first_name, last_name, instagram_account or any other).

The updateUser method must take the bearerToken as argument. In addition to it, we have three more optional parameters, which are: email, password and data (array). If you don't want to change some of this data, just set it to null.

An example of how to save/update two new meta data (first_name and last_name) for the user.

$auth = $service->createAuth();
$bearerToken = 'THE_ACCESS_TOKEN';

$newUserMetaData = [
    'first_name' => 'Michael',
    'last_name'  => 'Jordan'
];

try{
    //the parameters 2 (email) and 3(password) are null because this data will not be changed
    $data = $auth->updateUser($bearerToken, null, null, $newUserMetaData);
    print_r($data); // show all user data returned
}
catch(Exception $e){
    echo $auth->getError();
}

Note that in the array returned now, the keys first_name and last_name were added to user_metadata.

Database class

The Database class provides features to perform actions (insert, update, delete and fetch) on the Postgre database tables provided by the Supabase project.

For the samples below, consider the following database structure:

categories (id INT AUTO_INCREMENT, categoryname VARCHAR(32))
products (id INT AUTO_INCREMENT, productname VARCHAR(32), price FLOAT, categoryid INT)

The Database class is also instantiated from the service object. You must pass the table that will be used and its respective primary key (usually id).

Let's create an object to work with the categories table:

$db = $service->initializeDatabase('categories', 'id');

Through the db variable it is possible to perform the actions on the categories table.

NOTE: If Row Level Security (RLS) is enabled in the used table, pass the bearerToken to the Service object:

$bearerToken = 'THE_ACCESS_TOKEN'; //returned in the login action.
$db = $service->setBearerToken($bearerToken)->initializeDatabase('categories', 'id');

Insert data

Inserting a new record in the categories table:

$db = $service->initializeDatabase('categories', 'id');

$newCategory = [
    'categoryname' => 'Video Games'
];

try{
    $data = $db->insert($newCategory);
    print_r($data); //returns an array with the new register data
    /*
        Array
        (
            [0] => stdClass Object
                (
                    [id] => 1
                    [categoryname] => Video Games
                )

        )
    */
}
catch(Exception $e){
    echo $e->getMessage();
}

Now let's insert a new product from category 1 - Video Games:

$db = $service->initializeDatabase('products', 'id');

$newProduct = [
    'productname' => 'XBOX Series S',
    'price'       => '299.99',
    'categoryid'  => '1' //Category "Video Games"
];

try{
    $data = $db->insert($newProduct);
    print_r($data); //returns an array with the new register data
    /*
        Array
        (
            [0] => stdClass Object
                (
                    [id] => 1
                    [productname] => XBOX Series S
                    [price] => 299.99
                    [categoryid] => 1
                )
        )
    */
}
catch(Exception $e){
    echo $e->getMessage();
}

Update data

To update a record in the database, we use the update method, passing as parameter the id (PK) of the record to be updated and an array containing the new data (NOTE: For now, it is not possible to perform an update using a parameter other than the primary key).

In the example below, we will update the productname and price of the product with id=1 ("Xbox Series S" to "XBOX Series S 512GB" and "299.99" to "319.99"):

$db = $service->initializeDatabase('products', 'id');

$updateProduct = [
    'productname' => 'XBOX Series S 512GB',
    'price'       => '319.99'
];

try{
    $data = $db->update('1', $updateProduct); //the first parameter ('1') is the product id
    print_r($data); //returns an array with the product data (updated)
    /*
        Array
        (
            [0] => stdClass Object
                (
                    [id] => 1
                    [productname] => XBOX Series S 512GB
                    [price] => 319.99
                    [categoryid] => 1
                )
        )
    */
}
catch(Exception $e){
    echo $e->getMessage();
}

Delete data

To delete a record from the table, just call the delete method and pass the id (PK) of the record to be deleted as a parameter.

The following code deletes the product of id=1 in the products table:

$db = $service->initializeDatabase('products', 'id');

try{
    $data = $db->delete('1'); //the parameter ('1') is the product id
    echo 'Product deleted successfully';
}
catch(Exception $e){
    echo $e->getMessage();
}

Fetch data

The following methods for fetching data are available in the Database class:

• fetchAll(): fetch all table records;
• findBy(string $column, string $value): fetch records filtereds by a column/value (using the = operator);
• findByLike(string $column, string $value): fetch records filtereds by a column/value (using the LIKE operator);
• join(string $foreignTable, string $foreignKey): make a join between the seted table and another table related and fetch records;
• createCustomQuery(array $args): build a custom SQL query. The following keys are valid for the args argument:
  • select
  • from
  • join
  • where
  • limit
  • range

All the mentioned methods return the self instance of Database class. To access the fetched data, call the getResult method.

See some examples:

$db = $service->initializeDatabase('products', 'id');

try{
    $listProducts = $db->fetchAll()->getResult(); //fetch all products
    foreach ($listProducts as $product){
        echo $product->id . ' - ' . $product->productname . '($' . $product->price . ') <br />';
    }
}
catch(Exception $e){
    echo $e->getMessage();
}

Now, an example using the findBy method:

$db = $service->initializeDatabase('products', 'id');

try{
    $listProducts = $db->findBy('productname', 'PlayStation 5')->getResult(); //Searches for products that have the value "PlayStation 5" in the "productname" column
    foreach ($listProducts as $product){
        echo $product->id . ' - ' . $product->productname . '($' . $product->price . ') <br />';
    }
}
catch(Exception $e){
    echo $e->getMessage();
}

Searching for products and adding a join with the categories table:

$db = $service->initializeDatabase('products', 'id');

try{
    $listProducts = $db->join('categories', 'id')->getResult(); //fetch data from "products" JOIN "categories"
    foreach ($listProducts as $product){
        //SHOW "productname" - "categoryname"
        echo $product->productname . ' - ' . $product->categories->categoryname . '<br />';
    }
}
catch(Exception $e){
    echo $e->getMessage();
}

An example of a custom query to search id,productname,price for all products "JOIN" categories filtering by price (price greater than 200.00):

$db = $service->initializeDatabase('products', 'id');

$query = [
    'select' => 'id,productname,price',
    'from'   => 'products',
    'join'   => [
        [
            'table' => 'categories',
            'tablekey' => 'id'
        ]
    ],
    'where' => 
    [
        'price' => 'gt.200' //"gt" means "greater than" (>)
    ]
];

try{
    $listProducts = $db->createCustomQuery($query)->getResult();
    foreach ($listProducts as $product){
        echo $product->id . ' - ' . $product->productname . '($' . $product->price . ') <br />';
    }
}
catch(Exception $e){
    echo $e->getMessage();
}

Other examples for custom query:

//products with price > 200 AND productname LIKE '%n%'
$query = [
    'select' => 'id,productname,price',
    'from'   => 'products',
    'where' => 
    [
        'price' => 'gt.200', //"gt" means "greater than" (>)
        'productname' => 'like.%n%' //like operator
    ]
];

//products with categoryid = 1
$query = [
    'select' => 'id,productname,price',
    'from'   => 'products',
    'where' => 
    [
        'categoryid' => 'eq.1', //"eq" means "equal" (=)
    ]
];

//products with price < 1000 LIMIT 4 results
$query = [
    'select' => 'id,productname,price',
    'from'   => 'products',
    'where' => 
    [
        'price' => 'lt.1000', //"lt" means "less than" (<)
    ],
    'limit' => 4 //4 first rows
];

Comparison operators

The main operators available for the where clause:

• eq: equal
• neq: not equal
• gt: greater than
• gte: greater than or equal
• lt: less than
• lte: less than or equal
• like: search for a specified pattern in a column
• ilike: search for a specified pattern in a column (case insensitive)

Other operators available:

• is
• in
• cs
• cd
• sl
• sr
• nxl
• nxr
• adj
• ov
• fts
• plfts
• phfts
• wfts
• not.eq
• not.neq
• not.gt
• not.gte
• not.lt
• not.lte
• not.like
• not.ilike
• not.is
• not.in
• not.cs
• not.cd
• not.sl
• not.sr
• not.nxl
• not.nxr
• not.adj
• not.ov
• not.fts
• not.plfts
• not.phfts
• not.wfts

QueryBuilder class

The QueryBuilder class provides methods for dynamically building SQL queries. It is instantiated from the service object.

$query = $service->initializeQueryBuilder();

NOTE: If Row Level Security (RLS) is enabled on any of the tables used, pass the bearerToken to the Service object:

$bearerToken = 'THE_ACCESS_TOKEN'; //returned in the login action.
$query = $service->setBearerToken($bearerToken)->initializeQueryBuilder();

Available methods:

• select(string $select): the fields (comma separated) or *
• from(string $from): the table
• join(string $table, string $tablekey, string $select = null): related table
• where(string $column, string $value): conditions
• limit(int $limit): limit rows
• order(string $order): the "order by" field
• range(string $range): results range (E.g. "0-3")

All the mentioned methods return the self instance of QueryBuilder class. To run the mounted query, call the execute method. Then, to access the fetched data, call the getResult method.

An example to fetch all data from the products table:

$query = $service->initializeQueryBuilder();

try{
    $listProducts = $query->select('*')
                ->from('products')
                ->execute()
                ->getResult();
    foreach ($listProducts as $product){
        echo $product->id . ' - ' . $product->productname . '($' . $product->price . ') <br />';
    }
}
catch(Exception $e){
    echo $e->getMessage();
}

An example to fetch all data from the products "JOIN" categories:

$query = $service->initializeQueryBuilder();

try{
    $listProducts = $query->select('*')
                ->from('products')
                ->join('categories', 'id')
                ->execute()
                ->getResult();
    foreach ($listProducts as $product){
        echo $product->id . ' - ' . $product->productname . '($' . $product->price . ') - '. $product->categories->categoryname .' <br />';
    }
}
catch(Exception $e){
    echo $e->getMessage();
}

Fetch products with categoryid=1 and price>200 order by price:

$query = $service->initializeQueryBuilder();

try{
    $listProducts = $query->select('*')
                ->from('products')
                ->join('categories', 'id')
                ->where('categoryid', 'eq.1') //eq -> equal
                ->where('price', 'gt.200') // gt -> greater than
                ->order('price.asc') //"price.desc" for descending
                ->execute()
                ->getResult();
    foreach ($listProducts as $product){
        echo $product->id . ' - ' . $product->productname . '($' . $product->price . ') - '. $product->categories->categoryname .' <br />';
    }
}
catch(Exception $e){
    echo $e->getMessage();
}

Some of the operators to be used in the where method can be seen in the Comparison operators section.