Square PHP SDK Quickstart

Learn how to quickly set up and test the Square PHP SDK.

Before you begin, you need a Square account and account credentials. You use the Square Sandbox for the Quickstart exercise.

1. Create a Square account and an application. For more information, see Create an Account and Application.

2. Get a Sandbox access token from the Developer Console. For more information, see Get a personal access token.

3. Install the following:

   • PHP - Square supports PHP versions 7.4 to 8.1.
   • Composer - Used for dependency management.

1. Open a new terminal window. Create a new directory for your project, and then go to that directory.

   mkdir quickstart
   cd ./quickstart

2. Install the Square PHP SDK.

   composer require square/square

1. In your project directory, create a new file named quickstart.php with the following content:

   <?php
   
   require 'vendor/autoload.php';
   
   use Square\SquareClientBuilder;
   use Square\Authentication\BearerAuthCredentialsBuilder;
   use Square\Environment;
   use Square\Exceptions\ApiException;
   
   $client = SquareClientBuilder::init()
     ->bearerAuthCredentials(
         BearerAuthCredentialsBuilder::init(
             getenv('SQUARE_ACCESS_TOKEN')
           )
     )
     ->environment(Environment::SANDBOX)
     ->build();
   
   try {
   
       $apiResponse = $client->getLocationsApi()->listLocations();
   
       if ($apiResponse->isSuccess()) {
           $result = $apiResponse->getResult();
           foreach ($result->getLocations() as $location) {
               printf(
                   "%s: %s, %s, %s<p/>", 
                   $location->getId(),
                   $location->getName(),
                   $location->getAddress()->getAddressLine1(),
                   $location->getAddress()->getLocality()
               );
           }
   
       } else {
           $errors = $apiResponse->getErrors();
           foreach ($errors as $error) {
               printf(
                   "%s<br/> %s<br/> %s<p/>", 
                   $error->getCategory(),
                   $error->getCode(),
                   $error->getDetail()
               );
           }
       }
   
   } catch (ApiException $e) {
       echo "ApiException occurred: <b/>";
       echo $e->getMessage() . "<p/>";
   }

2. Save the quickstart.php file.

   This code does the following:

   • Creates a new SquareClient object with your Square access token. For more information, see Set your Square credentials.
   • Calls the listLocations method.
   • If the request is successful, the code prints the location information on the terminal.

The PHP code in this Quickstart reads your Square Sandbox access token from the SQUARE_ACCESS_TOKEN environment variable. This helps avoid the use of hardcoded credentials in the code.

For the following commands, replace yourSandboxAccessToken with your Square Sandbox access token:

export SQUARE_ACCESS_TOKEN=yourSandboxAccessToken

Set-item -Path Env:SQUARE_ACCESS_TOKEN -Value yourSandboxAccessToken

set SQUARE_ACCESS_TOKEN=yourSandboxAccessToken

1. PHP ships with a built-in web server for testing purposes. Start the web server as follows:

   php -S localhost:8000

2. Open a web browser and navigate to http://localhost:8000/quickstart.php.

3. Verify the result. You should see at least one location (Square creates one location when you create a Square account).

• Set up your Square SDK for a PHP Project
• Using the Square PHP SDK
• Common Square API Patterns