How to enable PEAR support for a domain in Plesk?

Dobrin Ivanov

Updated January 30, 2026 11:30

kb: how-to Plesk for Linux ABT: Group A php php extension

Applicable to:

A website application requires PEAR (PHP Extension and Application Repository) but it shows PEAR is not installed.

How to enable PEAR support for a domain in Plesk?

Log in to Plesk GUI
Go to Plesk > Domains > example.com > PHP settings > Common settings > Make sure that the include_path directive includes PEAR folder path relative to the selected PHP version. For example, if Plesk PHP 7.3 is selected, the PEAR folder is located in:

CONFIG_TEXT: .:/opt/plesk/php/7.3/share/pear

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Copy PEAR folder path from include_path and append it in open_basedir directive as follows:

CONFIG_TEXT: {WEBSPACEROOT}{/}{:}{TMP}{/}:/opt/plesk/php/7.3/share/pear

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Finally, check if PEAR was enabled correctly creating the pear.php file in the website public directory with the following content:

CONFIG_TEXT: <?php
require_once 'System.php';
if (class_exists('System')) {
echo 'PEAR is enabled';
} else {
echo 'PEAR is NOT enabled';
};
?>