Setting Up Stackdriver Debugger for PHP

Alpha

This is an alpha release of the Stackdriver Debugger agent for PHP. This library might be changed in backward-incompatible ways and is not recommended for production use. It is not subject to any SLA or deprecation policy.

Note: Stackdriver Debugger is available for PHP versions 7.0 or greater.

This page describes how to configure your environment and your PHP application to use Stackdriver Debugger. For some environments, you must explicitly specify the access scope to let the Stackdriver Debugger agent send data. We recommend setting the broadest possible access scope and then using Cloud Identity and Access Management to restrict access. In keeping with this best practice, set the access scope to be all Cloud APIs with the option cloud-platform.

App Engine standard environment

The Stackdriver Debugger agent for PHP is not supported in App Engine standard environment yet.

App Engine flexible environment

1. Install the stackdriver_debugger extension from PECL:

   pecl install stackdriver_debugger-alpha
   

   If your php.ini file does not include extension=stackdriver_debugger.so after running this step, add it manually.

2. Add the Google Cloud PHP Debugger package to your composer.json file:

   composer require google/cloud-debugger
   

3. Add the Stackdriver Debugger PHP extension via your composer.json file:

   composer require ext-stackdriver_debugger:*
   

4. Enable Stackdriver integrations in your app.yaml file:

   runtime_config:
     enable_stackdriver_integration: true
   

5. Enable the agent.

   Add the following code to your app as early in the request as possible:

   use Google\Cloud\Debugger\Agent;
   
   $agent = new Agent(['sourceRoot' => realpath('/app')]);
   

The debugger is now ready for use with your app.

GKE

1. Make sure your cluster is created with one of the following access scopes:

   • https://www.googleapis.com/auth/cloud-platform
   • https://www.googleapis.com/auth/cloud_debugger

   Example:

   gcloud container clusters create example-cluster-name \
       --scopes https://www.googleapis.com/auth/cloud-platform
   

2. Follow the instructions for Compute Engine.

Compute Engine

1. Make sure your Compute Engine instances are created with the access scope option Allow full access to all Cloud APIs, or have one of the following access scopes:

   • https://www.googleapis.com/auth/cloud-platform
   • https://www.googleapis.com/auth/cloud_debugger

2. Install the stackdriver_debugger extension (if using containers, install to the image) from PECL:

   pecl install stackdriver_debugger-alpha
   

3. Add the Google Cloud PHP Debugger package to your composer.json file:

   composer require google/cloud-debugger
   

4. Configure a daemon to run the Stackdriver Debugger daemon process:

   php /[YOUR-APP-PATH]/vendor/bin/google-cloud-debugger -s /[YOUR-APP-PATH]
   

5. Enable the agent.

   Add the following code to your app as early in the request as possible:

   use Google\Cloud\Debugger\Agent;
   
   $agent = new Agent(['sourceRoot' => realpath('/[YOUR-APP-PATH]')]);
   

The debugger is now ready for use with your app.

Local and Elsewhere

1. Install the stackdriver_debugger extension from PECL:

   pecl install stackdriver_debugger-alpha
   

2. Add the Google Cloud PHP Debugger package to your composer.json file:

   composer require google/cloud-debugger
   

3. Run the Stackdriver Debugger daemon process:

   php /[YOUR-APP-PATH]/vendor/bin/google-cloud-debugger -s /[YOUR-APP-PATH]
   

4. Enable the agent.

   Add the following code to your app as early in the request as possible:

   use Google\Cloud\Debugger\Agent;
   
   $agent = new Agent(['sourceRoot' => realpath('/[YOUR-APP-PATH]')]);
   

The debugger is now ready for use with your app.

The Debug page in the GCP Console can display local source files, without upload, for local development. See Selecting Source Code Manually.

Note: You can find the debugger agent's code and documentation on GitHub: extension, agent.