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How To Build Working CentOS Server with LightTPD and PHP5 (Part 4)

This article is the next part for my tutorial about how to build CentOS server with Lighttpd as its webserver. In previous articles we learned already about how to install Lighttpd, PHP5, MySQL and how to setup Lighttpd to work with PHP5 with FPM. Today in this page you’ll see how to get MySQL support in PHP5. Read on..

In my previous article about how to install PHP5 you can see there’s no MySQL module within the PHP. It means you have to firstly install necessary modules to get MySQL works together with PHP.

How to Get MySQL Support In PHP5

Step 0 – I assumed you’ve followed all the steps in the Part 1. So if at some point you feel confused, go back to read the part 1, 2 and 3.

Step 1 – Issue following command to install necessary PHP5 modules to make MySQL support:

yum install php-mysql php-gd php-imap php-ldap php-odbc php-pear php-xml php-xmlrpc

It asks you for a confirmation, simply type Y then hit Enter.

install php module

Step 2 – Once you see the Complete! message now reload PHP using this command syntax:

/etc/init.d/php-fpm reload

You’ll then see the OK message with no issue.

reload php

Step 3 – Now confirm this by visiting your info.php page again in your browser. This time you should see the MySQL module listed there along with other detailed information:

mysql info

That’s it.

How to Install Other PHP Modules

There are several others PHP modules available for install but make sure you’ll only install what you really need it.

Step 1 – Check all available modules using this command:

yum search php

You’ll then see very long list like below..

php modules

Step 2 – Now find what module you wish to install then use this command to install it:

yum install php-modulename1 php-modulename2 php-modulename3

Replace php-modulename1 with the name of the module. The working example is the one in tutorial above (installing PHP module for MySQL) or this one below..

How to Install APC (Alternative PHP Cache)

APC is a free and open PHP opcode cacher for caching and optimizing PHP intermediate code. It is a free module you can install in your server to optimize how PHP behave by caching some frequently executed codes. This module uses the APC user cache as a cache backend for various PHP-based scripts and CMSs like WordPress and Drupal. PHP must be parsed, compiled and executed everytime a script is called. APC will store the compiled code for execution so there is not a need to parse and compile the code over again. Basically there are several other accelerators (see the list) but APC is the free one that is also very recommended. The best part, APC gives you the ability to not only cache parsed PHP scripts for optimized loading but the ability to cache data as well. Here’s how to install it:

Step 1 – Issue this command:

yum install php-pecl-apc

As usual, your server will ask for confirmation, type Y then hit Enter.

install apc cache

Step 2 – Reload PHP with this Unix command:

/etc/init.d/php-fpm reload

Now if you reload the info.php page again in your browser, you should now see APC is listed there along with detailed information.

apc cache details

How to Avoid TCP Overhead Issue

You may notice that PHP-FPM service is by default listening on port 9000 on localhost However as user you can also make a slight adjustment to make PHP-FPM use a Unix socket with a purpose to avoid the TCP overhead issue. The configuration you can adjust is located in www.conf file.

Step 1 – Edit it:

nano /etc/php-fpm.d/www.conf

Step 2 – Now locate the line that says: listen = Found it? Now add the ; symbol to comment it and add additional line so it looks like this:

;listen =
listen = /tmp/php5-fpm.sock

Here’s the screenshot:

edit listening port

Hit Control+O to save then Control+X to exit once done.

Step 3 – Reload PHP once again:

/etc/init.d/php-fpm reload

Step 4 – yet, you have to also edit fastcgi.conf which is Lighttpd’s PHP configuration file:

nano /etc/lighttpd/conf.d/fastcgi.conf

Step 5 – Now replace the host and port lines with “socket” => “/tmp/php5-fpm.sock”. See below:


before edit


after editing

That’s it. Now you can save it and exit.

Step 6 – Also restart Lighttpd service:

/etc/init.d/lighttpd restart

That’s it. Enjoy!..

Index of this guide: Part 1Part 2Part 3Part 4.


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