too long

Question

I needed try PHP 5.6 and 5.5 on on Centos 7. So, I installed them overtop of a perfect working installation of PHP 7.1. I followed the instructions here: https://www.mojowill.com/geek/howto-install-php-5-4-5-5-or-5-6-on-centos-6-and-centos-7/

Basically, I edited the remi repo config file to enable PHP 5.6 and 5.5 and installed PHP 5.6. I tested what I wanted to test and tried to switch back by disabling the repos and uninstall all php and then reinstall again. Now I have problems.

Here are the symptoms and what I've tried.

I get a message on a WordPress installation "Your PHP installation appears to be missing the MySQL extension which is required by WordPress."

# php -v
PHP **7.2.14** (cli) (built: Jan  8 2019 14:05:15) ( NTS )
Copyright (c) 1997-2018 The PHP Group

<? phpinfo() ?> works but says php version **7.1.24**

I tried to check if php-mysql is still installed:

# yum list installed | grep php
php.x86_64                              7.2.14-1.el7.remi              @remi-php72
php-cli.x86_64                          7.2.14-1.el7.remi              @remi-php72
php-common.x86_64                       7.2.14-1.el7.remi              @remi-php72
php-gd.x86_64                           7.2.14-1.el7.remi              @remi-php72
php-json.x86_64                         7.2.14-1.el7.remi              @remi-php72
php-mysqlnd.x86_64                      7.2.14-1.el7.remi              @remi-php72
php-pdo.x86_64                          7.2.14-1.el7.remi              @remi-php72
php-pecl-mcrypt.x86_64                  1.0.1-6.el7.remi.7.2           @remi-php72


# yum install php-mysql
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: mirror.layeronline.com
 * epel: mirror.uic.edu
 * extras: centos.mirror.globo.tech
 * nux-dextop: mirror.li.nux.ro
 * remi: repo1.ash.innoscale.net
 * remi-php72: repo1.ash.innoscale.net
 * remi-safe: repo1.ash.innoscale.net
 * updates: centos.mirror.ca.planethoster.net
 * webtatic: us-east.repo.webtatic.com
Package php-mysql-5.4.45-16.el7.remi.x86_64 is obsoleted by php-mysqlnd-7.2.14-1.el7.remi.x86_64 which is already installed

Is there any easy resolution to this mess, or should I just fresh install the whole development machine.

Answer 1

First remove everything regarding old php version (will take some time...)

    sudo yum remove --setopt=clean_requirements_on_remove=1 php php-pear php-mysql php-cli php-common mod-php

then, install newer version (will take even more time)

    sudo yum install mod_php70u php70u-cli php70u-mysqlnd

dont forget to do restart and check sudo apachectl restart systemctl status httpd

If you're running fpm with NGinX then use following uninstall (this will keep the config's just o remove packages / dependencies)

    sudo yum remove --setopt=clean_requirements_on_remove=1 php-fpm php-cli php-common php7-fpm php7-cli php7-common

and install

    sudo yum install php7-fpm-nginx php7-cli php7-mysqlnd

(use [72] instead of [7] if you need to)

save, exit and restart

    sudo systemctl restart php-fpm
    sudo systemctl restart nginx #(or whatever you use)

please consider stepping down to version 7.1, as that might be a little less pain connecting modules than latest version, especially on always problematic centOS

(thanks @fyrye for options on remove)