Linux Apps Tutorials - Herong's Tutorial Examples - v1.02, by Herong Yang
Install and Manage PHP Modules on CentOS
This section provides a tutorial example on how to search and install additional PHP modules on CentOS 8 systems using 'dnf/yum' as the package manager.
If you are developing a Web application using PHP scripts, you may need to install additional PHP modules as shown in this tutorial.
1. Install php-json package, if you see the "Call to undefined function json_decode()" error:
herong$ test-script.php Call to undefined function json_decode() herong$ sudo yum search php | grep json php-json.x86_64 : JavaScript Object Notation extension for PHP ... herong$ sudo dnf install php-json ... Installed: php-json-7.2.11-2.module_el8.1.0+209+03b9a8ff.x86_64
2. Install php-mbstring package, if you see the "Call to undefined function mb_internal_encoding()" error:
herong$ test-script.php Call to undefined function mb_internal_encoding() herong$ sudo yum search php | grep mb php-embedded.x86_64 : PHP library for embedding in applications php-mbstring.x86_64 : A module for PHP applications which need multi-byte string herong$ sudo dnf install php-mbstring ... Installed: php-mbstring-7.2.11-2.module_el8.1.0+209+03b9a8ff.x86_64
3. Install php-mysqlnd package, if you see the "Call to undefined function mysqli_connect()" error:
herong$ test-script.php Call to undefined function mysqli_connect herong$ sudo yum search php | grep mysql php-mysqlnd.x86_64 : A module for PHP applications that use MySQL databases herong$ sudo dnf install php-mysqlnd ... Installed: php-mysqlnd-7.2.11-2.module_el8.1.0+209+03b9a8ff.x86_64 php-pdo-7.2.11-2.module_el8.1.0+209+03b9a8ff.x86_64
4. Install php-mysqlnd package, if you see the "Call to undefined function mysqli_connect()" error:
herong$ test-script.php Uncaught Error: Class 'ZipArchive' not found... herong$ sudo yum search php | grep zip php-pecl-zip.x86_64 : A ZIP archive management extension herong$ sudo dnf install php-pecl-zip ... Installed: libzip-1.5.1-2.module_el8.2.0+313+b04d0a66.x86_64 php-pecl-zip-1.15.3-1.module_el8.2.0+313+b04d0a66.x86_64
If you see more errors on undefined functions, you can continue to search and install additional PHP modules with the "dnf/yum" command.
Table of Contents
Running Apache Web Server (httpd) on Linux Systems
►Running PHP Scripts on Linux Systems
Install and Manage PHP Packages on CentOS
"php -i" - Dump PHP Environment Information
►Install and Manage PHP Modules on CentOS
Files Used in PHP "include" Statements
Publish PHP Scripts on Apache Web Server
Dump PHP/Apache Environment Information
Change PHP Configuration Settings
Apache PHP file_put_contents() Permission Denied
SELinux Security Context on /var/www/html
Migrate Old Scripts to New PHP Release
Running MySQL Database Server on Linux Systems
Running Python Scripts on Linux Systems
Conda - Environment and Package Manager