eAccelerator is a PHP accelerator and optimizer. It helps improve performance by re-using compiled PHP scripts and optimizing them to speed up their execution.

Installation of eAccelerator on a cPanel server using phpextensionmgr script

login SSH via root user and run this script.

/scripts/phpextensionmgr install EAccelerator

Once completed just check with php -v command.

Uninstall eAccelerator

/scripts/phpextensionmgr uninstall EAccelerator