Install PHP Extensions on CentOS

PHP Tutorials - Herong's Tutorial Examples

∟Managing PHP Engine and Modules on CentOS

∟Install PHP Extensions on CentOS

This section provides a tutorial example on how to add PHP extensions on CentOS Linux systems by searching and installing the extension using the 'dnf' package manager.

PHP has many extensions. Some of them are pre-installed and some are not. If you are getting errors like "Class ... not found", or "Call to undefined function ...", you need to install the extension that provides the missing class or function.

For example, when I test a new Web application on my CentOS system, I see this error. I know that I need to install the ZIP extension.

PHP Fatal error:  Uncaught Error: Class 'ZipArchive' not found in
   /var/www/html/download.php:361

Stack trace:
#0 download.php(338): zipData()
#1 dowload.php(22): prepareData()
#2 {main}

To fix the problem, I check what PHP extensions have been installed on the system first:

herong$ dnf list installed | grep php

php.x86_64
php-cli.x86_64
php-common.x86_64
php-fpm.x86_64
php-json.x86_64
php-mbstring.x86_64
php-mysqlnd.x86_64
php-pdo.x86_64

There is no ZIP related extensions installed yet. So I search for PHP extensions:

herong$ dnf search php

...
php-opcache.x86_64 : The Zend OPcache
php-pecl-zip.x86_64 : A ZIP archive management extension
php-pecl-apcu.x86_64 : APC User Cache
php-pecl-apcu-devel.x86_64 : APCu developer files (header)

I see that "php-pecl-zip" is available for my system. So I install it:

herong$ sudo dnf install php-pecl-zip
...
Installed:
php-pecl-zip-1.15.3-1.module_el8.1.0+209+03b9a8ff.x86_64
libzip-1.5.1-2.module_el8.1.0+209+03b9a8ff.x86_64
Complete!