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There are two requirements to get started with the PHP package:
  1. An actively supported PHP version. See our maintenance policy.
  2. The OpenTelemetry PHP extension.
We will guide you through installing the OpenTelemetry extension.

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Install OpenTelemetry PHP extension

The OpenTelemetry PHP extension provides hooks in PHP functions that this package uses to instrument your application. This is a PHP extension that you need to install and enable in your PHP environment. First, make sure the required build dependencies are available on your system. 
sudo apt-get install gcc make autoconf
Then, install the OpenTelemetry PHP extension using either PECL, pie, pickle, or docker-php-extension-installer: 
pecl install opentelemetry
Finally, enable the extension in your PHP installation’s configuration file. The configuration file is usually named php.ini, and its location can be found by running php --ini. Add the following lines to it:
INI
[opentelemetry]
extension=opentelemetry.so
When using the docker-php-extension-installer script to install the opentelemetry extension, the extension is automatically enabled and you don’t need to manually edit the php.ini file.

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Create a new AppSignal application

Please follow the installation guide first, when adding a new application to AppSignal. At the end of that guide, you will receive a Push API key and a collector endpoint URL. You will need both to configure AppSignal for PHP.