PECL (PHP Extension Community Library) is a repository for PHP extensions that are not included in the core PHP distribution. You can use PECL to easily install and manage PHP extensions.

Step 1: Ensure PECL is Installed

PECL is included with PHP-PEAR, so you may need to install it first:

For cPanel/WHM servers:

yum install ea-phpXX-php-pear ea-phpXX-php-devel -y

Replace XX with your PHP version (e.g., ea-php82-php-pear for PHP 8.2).

For other Linux distributions:

apt install php-pear php-dev -y # Debian/Ubuntu

yum install php-pear php-devel -y # CentOS/RHEL

Step 2: Install the PHP Extension Using PECL

To install an extension, use:

pecl install extension_name

For specific PHP versions on cPanel/WHM:

/opt/cpanel/ea-phpXX/root/usr/bin/pecl install extension_name

Replace XX with the PHP version (e.g., ea-php82 for PHP 8.2).

Example:

pecl install zstd

Step 3: Enable the Installed Extension

After installation, you may need to manually enable the extension in the PHP configuration file.

1. Add the extension to the php.ini or create a .ini file:

   1. echo "extension=extension_name.so" >> /etc/php.d/extension_name.ini

2. For cPanel/WHM:

   1. echo "extension=extension_name.so" >> /opt/cpanel/ea-phpXX/root/etc/php.d/extension_name.ini

3. Restart your web server to apply changes:

   
   

Step 4: Verify the Installation

Check if the extension is installed:

php -m | grep extension_name

or

php -i | grep extension_name

If the extension appears in the output, it has been successfully installed.