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Updated: 28 September 2026 · Applies to: cPanel & WHM 138 (WHM, root access)

On cPanel servers with EasyApache 4, PHP extensions are installed as packages per PHP version. (The old /scripts/phpextensionmgr tool belonged to EasyApache 3 and no longer exists.)

With WHM

  1. Log in to WHM as root (https://your-server:2087).
  2. Open Software › EasyApache 4 and click Customize next to the current profile.
  3. Open PHP Extensions, search for the extension (for example gmp, imagick or ioncube) and switch it on for the PHP versions you use.
  4. Click Review and then Provision.

From the command line

dnf install ea-php83-php-gmp ea-php82-php-gmp
/usr/local/cpanel/scripts/restartsrv_apache_php_fpm

Extensions that are not packaged

Use Software › Module Installers › PHP PECL in WHM, choose the PHP version and install the PECL module by name.

Confirm with /opt/cpanel/ea-php83/root/usr/bin/php -m. On CloudLinux servers, users can also switch extensions on themselves in Software › Select PHP Version.

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