Extension Installer/Triggers/onAfterExtensionInstall
From Joomla! Documentation
The onAfterExtensionInstall trigger occurs after the installation of an extension. It has two parameters:
- installer
A copy of the installer instance that was used. This it to get access to any error messages that might have occured. - eid
The extension ID of the installed extension. The extension ID may be either a valid numeric value (positive integer), a zero value (when the extension doesn't have a corresponding entry in the extensions table but it is valid; a combined 1.5 language pack behaves this way) or false if the installation failed.
Note: The extension adapter may shift internally to an update procedure from an install procedure. the same information is passed however the functional actions are different.
