This guide will walk you through installing the php-ext-brotli extension on a CWP (Control Web Panel) server. The Brotli extension enhances performance by compressing data, which is beneficial for serving cached resources in various applications. Follow the steps below to install php-ext-brotli for PHP Switcher, CGI Selector, and PHP-FPM Selector.

Understanding Brotli Compression

Brotli is a lossless compression algorithm that combines:

• A modern variant of the LZ77 algorithm,
• Huffman coding, and
• Second-order context modeling.

It provides compression rates comparable to the best available methods while maintaining speeds similar to the Deflate algorithm but with denser compression.

Prerequisites

Before starting, ensure the following:

1. A CWP Pro license is required to use the CGI and PHP-FPM selectors.
2. Root access to the server.

Installation

Step 1: Install Google Brotli

Begin by installing the Brotli library:

yum install pcre-devel cmake git -y
cd /usr/local/src
git clone https://github.com/google/brotli.git
cd brotli
./configure-cmake
make && make install

Step 2: Installing php-ext-brotli

A. PHP Switcher Installation

1. Download and build the extension:

cd /usr/local/src
rm -rf php-ext-brotli
git clone --recursive --depth=1 https://github.com/kjdev/php-ext-brotli.git
cd php-ext-brotli
phpize
./configure
make && make install

2. Add the extension to PHP:

touch /usr/local/php/php.d/brotli.ini
grep "brotli.so" /usr/local/php/php.d/brotli.ini || echo "extension=brotli.so" >> /usr/local/php/php.d/brotli.ini

B. PHP Selector (CGI) Installation

1. Download and build the extension:

cd /usr/local/src
rm -rf php-ext-brotli
git clone --recursive --depth=1 https://github.com/kjdev/php-ext-brotli.git
cd php-ext-brotli
/opt/alt/php74/usr/bin/phpize
./configure --with-php-config=/opt/alt/php74/usr/bin/php-config
make && make install

2. Add the extension to PHP:

touch /opt/alt/php74/usr/php/php.d/brotli.ini
grep "brotli.so" /opt/alt/php74/usr/php/php.d/brotli.ini || echo "extension=brotli.so" >> /opt/alt/php74/usr/php/php.d/brotli.ini

3. Adjust for other versions: Replace php74 with the corresponding version:

• php73 for PHP 7.3.x
• php72 for PHP 7.2.x
• php71 for PHP 7.1.x
• php70 for PHP 7.0.x
• php56 for PHP 5.6.x

C. PHP-FPM Selector Installation

1. Download and build the extension:

cd /usr/local/src
rm -rf php-ext-brotli
git clone --recursive --depth=1 https://github.com/kjdev/php-ext-brotli.git
cd php-ext-brotli
/opt/alt/php-fpm74/usr/bin/phpize
./configure --with-php-config=/opt/alt/php-fpm74/usr/bin/php-config
make && make install

2. Add the extension to PHP:

touch /opt/alt/php-fpm74/usr/php/php.d/brotli.ini
grep "brotli.so" /opt/alt/php-fpm74/usr/php/php.d/brotli.ini || echo "extension=brotli.so" >> /opt/alt/php-fpm74/usr/php/php.d/brotli.ini

3. Adjust for other versions: Replace php-fpm74 with the corresponding version:

• php-fpm73 for PHP 7.3.x
• php-fpm72 for PHP 7.2.x
• php-fpm71 for PHP 7.1.x
• php-fpm70 for PHP 7.0.x
• php-fpm56 for PHP 5.6.x

Step 3: Restart PHP-FPM

After completing the installation, restart or reload the PHP-FPM service using the CWP PHP-FPM module to apply the changes.

That’s It!

By following these steps, you will have successfully installed the php-ext-brotli extension on your CWP server, enabling efficient Brotli compression for your applications.