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Php versions – How can I downgrade or use PHP 7.2 without uninstalling PHP 7.4? Is it possible to use PHP 7.2 as default instead of the latest version?

I am using linux Ubuntu 18.04
And I wanna revert back to the previous version of PHP.

I’ve seen tutorials that requires me to uninstall the latest version, now I am asking if there is a workaround in this problem such that I can easily switch from using 7.2 or 7.4.

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6

Answers


  1. 0

    You can install multiple php version in ubuntu and can disable the version you don’t need e.g:

    sudo a2dismod php7.4

sudo a2enmod php7.2
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  2. 0

    Yes, you can.

    1- To stop running PHP 7.4, run the commands below to disable it for Apache2:

    sudo a2dismod php7.4

    2- Then run the commands below to enable PHP 7.2 for Apache2 to use:

    sudo a2enmod php7.2

    3- Restart Apache2 for the changes to apply by running the commands below:

    sudo systemctl restart apache2.service
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  3. 0

    I have faced the same problem and Here is the solution:

    sudo update-alternatives --config php

    Now select which version U want on right now, thanks

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  4. 0

    Downgrade from 7.4 to 7.2

    sudo add-apt-repository ppa:ondrej/php

sudo apt-get update

sudo apt-get install php7.2

sudo apt-get install php7.2-cli php7.2-common php7.2-json php7.2-opcache php7.2-mysql php7.2-mbstring  php7.2-zip php7.2-fpm php7.2-intl php7.2-simplexml

   

sudo a2dismod php7.4

sudo a2enmod php7.2

sudo service apache2 restart

sudo update-alternatives --set php /usr/bin/php7.2

sudo update-alternatives --set phar /usr/bin/phar7.2

sudo update-alternatives --set phar.phar /usr/bin/phar.phar7.2

sudo update-alternatives --set phpize /usr/bin/phpize7.2

sudo update-alternatives --set php-config /usr/bin/php-config7.2
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  5. 0

    If you nginx user. first install php 7.4 all necessary item.

    sudo apt-get update

sudo apt -y install software-properties-common

sudo add-apt-repository ppa:ondrej/php

sudo apt-get update

sudo apt-get install php7.4-cli php7.4-json php7.4-common php7.4-mysql php7.4-zip php7.4-gd php7.4-mbstring php7.4-curl php7.4-xml php7.4-bcmath php7.4-fpm -y

systemctl status php7.2-fpm.service #get previous version id 
kill -9 873 #id will be replace with your php.7.2-fpm
service php7.4-fpm restart
systemctl status php7.4-fpm.service #check php status

    Done, All okay

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  6. 0

    We downgrade or upgrade the PHP version using the following steps.
    Let me show how to downgrade (from 7.2 >> 7.0 )
    enter image description here

    step1: sudo a2dismod php7.2

    step2: sudo a2enmod php7.0

    step3: sudo systemctl restart apache2

    step4: sudo update-alternatives –set php /usr/bin/php7.0

    That’s it, version changed to 7.2 as you can see below.

    enter image description here

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