To test your extension in real-life conditions, install it to Plesk by logging in to Plesk as the administrator and adding the extension on the Server Management > Extensions page. Below you will find Plesk configuration parameters that help you easily debug your extensions. Be sure to comment the parameters (by adding the leading ; symbol) after you complete testing and decide to use Plesk in production.
If your extension uses the Plesk GUI and it exits with an error or an exception, you should see the PHP stack trace. If you do not see it, and, say, see only a blank screen, try to improve the verbosity level of the debug output by adding the following lines to the panel.ini file:
Then, turn on PHP error reporting in
php.ini. The file path is:
Open the file and edit the
display_errors = On
error_reporting = E_ALL & ~E_STRICT & ~E_DEPRECATED
After that, restart the Plesk web server.
If you are testing an extension on Linux, you may run across the problem
with inconsistency between your code and expected result. The
inconsistency happens because Plesk content is cached, so the cache must
expire before you see the update. To mitigate this problem, turn the
Plesk cache off. This is also triggered in
php.ini by the following
apc.enabled = 0
The change will take effect after you restart the web server which handles requests to the Plesk GUI. The restart command is as follows: