Installing As PHP Extension

Install into php.ini

check ​phpinfo() for php.ini location, supposing it's /etc/php.ini (See also: PhpIni)

Modify php.ini

# cat xcache.ini >> /etc/php.ini

(modify php.ini for your usage)
# $EDITOR /etc/php.ini

WARNING: it's >> not >

Restart php

You know how to restart php than i do. It depends on what your php-sapi is, and how you run your php.

• ​lighttpd or any webserver + mod_fastcgi --> php-fastcgi: just restart php itself, not the webserver

Restart php with daemontools

(in case you run php with daemontools, do)
# svc -d php && svc -u php; echo $?

(or in case you're using gentoo daemontools, do)
# svcinit php restart

(in any other case, you should know better than i do.)

• any webserver + mod_php: restart the webserver. something like:

Restart php with apache

(in case you're using apache, do)
# /etc/init.d/apache* restart

(or do)
# /etc/init.d/httpd* restart

(in any other case, you should know better than i do.)

Make sure XCache is working

• if you're working with php-fcgi, simply run

Check XCache from command line

$ php-fcgi -v
PHP 4.4.3-dev (cgi-fcgi) (built: Mar 10 2006 18:46:02)
Copyright (c) 1997-2006 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2004 Zend Technologies
    with XCache v1.0, Copyright (c) 2005-2006, by mOo

• otherwise, check ​phpinfo():

This program makes use of the Zend Scripting Language Engine: Zend Engine v2.2.0, Copyright (c) 1998-2006 Zend Technologies     with XCache v2.0.0-dev, Copyright (c) 2005-2006, by mOo

See also: BuildingFromSource (prev), InstallAdministration (next), PHP FastCGI on Lighttpd