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Monolog is the most popular logging library for PHP. You can use Monolog directly to send logs to AppSignal. Install the Monolog auto-instrumentation package:
Shell
composer require open-telemetry/opentelemetry-logger-monolog
Then add Appsignal\Integrations\Monolog\Handler to Monolog’s handler stack.
PHP
use Appsignal\Integrations\Monolog\Handler;
use Monolog\Logger;

$logger = new Logger('app');
$logger->pushHandler(Handler::withLevel('info'));

$logger->info('My log message');
Visit logging documentation to find out more about AppSignal logging capabilities.