Custom Settings

Plesk SDK API provides the ability to customize the behavior of
extensions editing the
panel.ini
configuration file.

You can add values to panel.ini for extensions to read. They are
intended to be read-only, and end users should rarely change them. For
example, you can configure the “connectionTimeout” value in
panel.ini instead of hard-coding it. To specify one or more values
to be read by a specific extension, add a section to the file starting
with [ext-<extension-id>], where <extension-id> in the id of the
extension. Consider the following example:

[ext-custom-config]
timeout = 1200
homepage = "https://another-url.com"

Here, the values for timeout and homepage are specified, and
they will be read only by the extension with the id “custom-config”.

Reading the values from the configuration file is implemented via the
pm_Config
class.

Storing the default settings is optional and is implemented via a hook
class implemented within the scope of an extension. The class should be
located at plib/hooks/ConfigDefaults.php and extend
pm_Hook_ConfigDefaults.

Nested configuration settings are not supported.

Examples

Reading values from the configuration file

$timeout = pm_Config::get('timeout');
$homepage = pm_Config::get('homepage');

Providing the default settings

In the plib/hooks/ConfigDefaults.php file:

<?php
// Copyright 1999-2016. Parallels IP Holdings GmbH.
class Modules_CustomConfig_ConfigDefaults extends pm_Hook_ConfigDefaults
{
    public function getDefaults()
    {
        return [
            'homepage' => 'https://plesk.com/',
            'timeout' => 60,
        ];
    }
}

A sample extension demonstrating the principle can be found
here.