Installation process is the same as for any PECL extension. There is a special section on php.net describing the process. But just in case if you get lost, the following may clear up some points.
In most cases, it should be enough to install the PEAR base system package (for pecl command) and then run:
pecl install eio
The command above installs the latest stable release of eio uploaded to the PECL repository. In order to install a beta version, add -beta to the package name:
pecl install eio-beta
If you have the package archive, you can unpack it and then run:
pecl install package.xml
Note, the commands above require root privileges.
Since version 0.4.0 beta libeio is embedded so you don't need to install the library separately.
phpize
./configure --with-eio --enable-eio-sockets --enable-eio-debug
make
Running tests:
make test
make install # (requires root privileges)
In a PHP .ini configuration file, add the following directive:
extension=eio.so
Note that eio.so should be loaded after sockets.so, so the .ini file for eio.so should go after the file with extension=sockets.so in alphabetical order. E.g.
20-sockets.ini
90-eio.ini