The current version of PHP in the CentOS 6 official repositories is PHP 5.3, which has reached its end of life and is no longer maintained (in terms of bug fixes and critical security updates) by the developers. You may be exposed to unpatched security vulnerabilities if you are still using it.
Therefore it is recommended for you to upgrade or install a latest supported stable version of PHP 5.4 or PHP 5.6 on a CentOS 6 Linux distribution as soon as possible.
Install EPEL and Remi Repository
1. To install latest stable version of PHP, you need to add EPEL and Remi repository to your CentOS 6 distribution using the following commands as root user.
# wget http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm # wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm # rpm -Uvh epel-release-6-8.noarch.rpm remi-release-6.rpm
Install Yum-Utils to Manage Repository
2. Install yum-utils, a collection of utilities that integrate with yum to extend its native features in several ways, thus making it more powerful and easier to use.
The package yum-utils used to enable or disable packages on the fly without any manual configuration.
# yum install yum-utils
Install PHP 5.4, PHP 5.5 or PHP 5.6 on CentOS 6
3. Once EPEL, Remi and yum-utils has been installed, you can now move ahead to install PHP 5.4, PHP 5.5 or PHP 5.6 with all required modules on CentOS 6 distribution by enabling remi repository using yum-config-manager command as shown.
# yum-config-manager --enable remi-php54 [Intall PHP 5.4] # yum-config-manager --enable remi-php55 [Intall PHP 5.5] # yum-config-manager --enable remi-php56 [Intall PHP 5.6]
4. Once you’ve enabled selected version of PHP, you can install PHP (in my case I have chosen PHP 5.6) with all needed modules as shown.
# yum-config-manager --enable remi-php56 [Intall PHP 5.6] # yum install php php-mcrypt php-cli php-gd php-curl php-mysql php-ldap php-zip php-fileinfo
If you want to downgrade PHP version for any reason, you will need to remove existing PHP version and then reinstall the new PHP with modules you want.
Finally, do not forget to check out these useful PHP articles:
- How to Use and Execute PHP Codes in Linux Command Line
- How to Find MySQL, PHP and Apache Configuration Files
- How to Test PHP MySQL Database Connection Using Script
- How to Run PHP Script as Normal User with Cron
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