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I have a server that has an application that runs with PHP 5.6. But I upgraded the server from Ubuntu 14.04 to 18.04 and in the process I also upgraded PHP to 7.2.
Now I’m trying to uninstall it but I’m finding difficult.

I have run the command:

sudo apt-get remove php

and

sudo apt-get remove --purge php

Its says that PHP it’s not installed, but running
php --version
I’m still seeing the version 7 of PHP.

PHP 7.2.19-0ubuntu0.18.04.2 (cli) (built: Aug 12 2019 19:34:28) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.2.19-0ubuntu0.18.04.2, Copyright (c) 1999-2018, by Zend Technologies

7

Answers


  1. This will remove all php7 versions, be it php 7.0 or php 7.1 etc..

    sudo apt-get purge php7.*
    sudo apt-get autoclean
    sudo apt-get autoremove
    
    • apt/apt-get autoclean → cleans obsolete deb-packages, less than clean
    • apt/apt-get autoremove → removes orphaned packages which are not longer needed from the system, but not purges them, use the --purge option together with the command for that.

    **To Install PHP again **

    sudo add-apt-repository ppa:ondrej/php
    sudo apt-get update
    

    if php7.0

    sudo apt-get install php7.0
    

    if php7.1

    sudo apt-get install php7.1
    

    if php7.2

    sudo apt-get install php7.2
    

    To switch that to the newer 7.1,7.2,7.3,7.4 version, first disable older PHP version:

    user@test:~# sudo a2dismod php7.0
    

    Then enable PHP 7.2:

    user@test:~# sudo a2enmod php7.2
    sudo service apache2 restart
    

    Install all the required extension, so it won’t make any error in future.
    Replace command based on your version. I used 7.2 as I have installed that version.

    sudo apt install php7.2-common php7.2-mysql php7.2-xml php7.2-xmlrpc php7.2-curl php7.2-gd php7.2-imagick php7.2-cli php7.2-dev php7.2-imap php7.2-mbstring php7.2-opcache php7.2-soap php7.2-zip php7.2-intl -y
    
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  2. Firstly you need to restart the apache to take all in effect and also
    You can install mutliple php version using this post
    or just using

    sudo apt update
    sudo apt-add-repository ppa:ondrej/php
    sudo apt update
    sudo apt install -y php5.6 php5.6-cli php5.6-common
    

    disable php7.2:

    sudo a2dismod php7.2
    

    enable php 5.6:

    sudo a2enmod php5.6
    

    After all restart the apache again to take into affect

    service apache2 restart
    
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  3. This is work on my server:

    sudo apt purge php5.6 php5.6-common
    sudo apt purge php7.x php7.x-common
    
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  4. This will remove PHP

    sudo apt-get purge `dpkg -l | grep php7.2| awk '{print $2}' |tr "n" " "`
    sudo apt-get purge php7.*
    sudo apt-get autoremove --purge
    whereis php
    sudo rm -rf /etc/php
    
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  5. To uninstall PHP

    sudo apt-get remove –purge php*
    sudo apt-get purge php*
    sudo apt-get autoremove
    sudo apt-get autoclean
    sudo apt-get remove dbconfig-php
    sudo apt-get dist-upgrade
    

    The output of the below command will provide you with information on the installed package software, version, architecture, and a short description of the package. grep command is used to find the PHP package

    sudo dpkg --get-selections | grep php | cut -f 1
    

    sudo apt-get remove –purge
    sudo whereis php
    sudo rm -rf <directory/file path from the previous command output>

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  6. apt-mark to the rescue

    I think it is a good idea to point out the existence of apt-mark hold <package-name>.
    Once you have a specific version installed that you want to keep, you can prevent accidental upgrades. So you can run apt upgrade, apt full-upgrade and don’t need to worry about which PHP version you will end up with.
    That said, you also prevent scenarios (as seen with the commenters above) where you end up with multiple major and main releases installed next to each other at the same time.

    For example, if you have PHP 7.4 installed, and your App doesn’t support PHP 8.* yet, then:

    apt-mark hold php7.4-common
    apt-mark hold php7.4-fpm
    
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  7. Just run

    sudo apt-get purge 'php*'

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