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A plugin is a collection of code and resources which can be dropped in to any esoTalk installation to add additional functionality. Plugins are stored in the addons/plugins folder.

In addition to reading this documentation, a good way to learn how plugins work is to look through the code of existing plugins.


A plugin has the following file structure:

File/Folder Description
ExamplePlugin/ The name of the plugin in StudlyCase.
--plugin.php The main plugin file, where all of the plugin's information and logic is located.
--icon.png A 16x16 icon which is displayed on the Administration > Plugins page.
--index.html An empty file to prevent the directory from being publicly listed.
--resources/ The plugin's publicly-accessible resources (CSS/JS files, images, etc.)
--views/ The plugin's views (see Concepts.)
--... Anything else you may need: class files, libraries, includes, etc.


A plugin's plugin.php file contains two important things: an array of details about the plugin (name, author, etc.) and a class which encapsulates all of the plugin's logic (discussed on the next page.)

Plugin details should be added to the ET::$pluginInfo array at the top of plugin.php. The key must correspond to the name of the plugin's folder.

Defining Plugin Details

ET::$pluginInfo["ExamplePlugin"] = array(
    "name"        => "Example Plugin",
    "description" => "An example plugin.",
    "version"     => "1.0",
    "author"      => "Toby Zerner",
    "authorEmail" => "",
    "authorURL"   => "",
    "license"     => "GPLv2"


Dependencies may be specified as an array under the dependencies key. For each item in the dependencies array, the key may be "esoTalk" or the name of a required plugin, and the value is the minimum version required. If these dependencies are not met, enabling the plugin will not be allowed.

Specifying Plugin Dependencies

ET::$pluginInfo["ExamplePlugin"] = array(
    // ...
    "dependencies" => array(
        "esoTalk"       => "1.0.0g3",
        "AnotherPlugin" => "1.3"


Ideally, you should version-control your plugin and create a repository on GitHub. The plugin.php file should be at the top-level of the repository; there should be no parent folder.

Plugins can be submitted for public listing in the Plugins channel on the esoTalk support forum. Read this conversation for plugin submission guidelines.