Rename & move the script to the right directory

Once the web server is configured to rewrite url requests .well-known/lnurlp/anything to .well-known/lnurlp/anything.php, the index.php (inside public/) script needs to be renamed with the wanted username part of the lightning address, such as for a wanted ln address ben@anything.dne, the script must be named ben.php.

Then, the script needs to be in the subdirectory .well-known/lnurlp/ of your web root directory of your web server such as https://www.yourwebsite.dne/.well-known/lnurlp/ points to your $WEBROOT/.well-known/lnurlp/ directory.

Set API endpoint & API Key

The following need to be changed according to your apiEndpoint and apiKey that your LNbits wallet provides, be sure to use the invoice/read key.

# lightning-config.php
return (new LightningConfig())
    ->setDomain('localhost')
    ->setReceiver('default-receiver')
    ->setSendableRange(min: 100_000, max: 10_000_000_000)
    ->setCallbackUrl('localhost:8000/callback')
    ->setBackends([
        'user-1' => (new LnBitsBackendConfig())
            ->setApiEndpoint('http://localhost:5000')
            ->setApiKey('api_key-1'),
        'user-2' => (new LnBitsBackendConfig())
            ->setApiEndpoint('http://localhost:5000')
            ->setApiKey('api_key-2')
    ]);

Please note that the min and max do not reflect the actual min/max sendable amount, it depends on the capacity of your LN backend