Switch php versions on commandline ubuntu 16 04

Question

I have installed php 5 6 and and php 7 1 on my Ubuntu 16 04 I know with Apache as my web server  I can do a2enmod php5 6  to enable php5 a2enmod php7 1  to enable php7  When I disable php7 1 in Apache modules and enable php 5 6  Apache recognizes the change and uses php 5 6 interpreter as expected  But when I run internal php web server from the commandline  php -S localhost 8888  php handles requests using php 7  So how do I switch between php 5 6 and php 7 1 in the command line

User · Answer

You can use below command lines to switch between two PHP version.

E.g.

I want to switch PHP Version from 7.1 to 7.2 we can use below command

sudo a2dismod php7.1 &&  sudo update-alternatives --set php /usr/bin/php7.2 && sudo a2enmod php7.2 && sudo service apache2 restart

a2dismod is use to disable the current php version and a2enmod is use to enable the version

User · Answer

You can use the below script to switch between PHP version easily I have included phpize configuration too   https   github com anilkumararumulla switch-php-version  Download the script file and run  sh switch sh

User · Answer

I think you should try this  From php5 6 to php7 1  sudo a2dismod php5 6 sudo a2enmod php7 1 sudo service apache2 restart  sudo update-alternatives --set php  usr bin php7 1 sudo update-alternatives --set phar  usr bin phar7 1 sudo update-alternatives --set phar phar  usr bin phar phar7 1   From php7 1 to php5 6  sudo a2dismod php7 1 sudo a2enmod php5 6 sudo service apache2 restart  sudo update-alternatives --set php  usr bin php5 6 sudo update-alternatives --set phar  usr bin phar5 6 sudo update-alternatives --set phar phar  usr bin phar phar5 6

User · Answer

You can create a script to switch from versions  sudo nano switch php then type this      bin sh    bin bash echo  Switching to PHP 1     case  1 in      7           sudo a2dismod php5 6         sudo a2enmod php7 0         sudo service apache2 restart         sudo ln -sfn  usr bin php7 0  etc alternatives php        5 6           sudo a2dismod php7 0         sudo a2enmod php5 6         sudo service apache2 restart         sudo ln -sfn  usr bin php5 6  etc alternatives php   esac echo  Current version     php -v   head -n 1   cut -c-7      exit and save make it executable  sudo chmod  x switch php  To execute the script just type   switch php  VERSION NUMBER  where the parameter is 7 or 5 6  That s it you can now easily switch form PHP7 to PHP 5 6

User · Answer

To list all available versions and choose from them     sudo update-alternatives --config php   Or do manually  sudo a2dismod php7 1    disable sudo a2enmod php5 6     enable

User · Answer

May be you might have an old PHP version like PHP 5 6 in your system and you installed PHP 7 2 too so thats multiple PHP in your machine  There are some applications which were developed when older PHP 5 6 was latest version  they are still live and you working on those applications  You might be working on Laravel simultaneously but Laravel requires PHP 7  to get started  Getting the picture    In that case you can switch between the PHP versions to suit your requirements   Switch From PHP 5 6    PHP 7 2  Apache -  sudo a2dismod php5 6 sudo a2enmod php7 2 sudo service apache2 restart   Command Line -  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   And vice-versa  Switch From PHP 7 2    PHP 5 6  Apache -  sudo a2dismod php7 2 sudo a2enmod php5 6 sudo service apache2 restart   Command Line -  sudo update-alternatives --set php  usr bin php5 6 sudo update-alternatives --set phar  usr bin phar5 6 sudo update-alternatives --set phar phar  usr bin phar phar5 6 sudo update-alternatives --set phpize  usr bin phpize5 6 sudo update-alternatives --set php-config  usr bin php-config5 6

User · Answer

I actually wouldn t recommend using a2enmod for php 5 or 7  I would use update-alternatives  You can do sudo update-alternatives --config php to set which system wide version of PHP you want to use  This makes your command line and apache versions work the same  You can read more about update-alternatives on the man page

User · Answer

Type given command in your terminal    For disable the selected PHP version       sudo a2dismod php5 sudo service apache2 restart   For enable other PHP version       sudo a2enmod php5 6 sudo service apache2 restart    It will upgrade Php version  same thing reverse if you want version downgrade  you can see it by PHP INFO

User · Answer

please follow the steps     i e   your current version is   current version   7 3   and you want to change it to   new version   7 2  1  sudo a2dismod php current version   2  sudo a2enmod php new version  3  sudo update-alternatives --config php  here you need to select php version number   4  restart apache through      sudo  etc init d apache2 restart OR   sudo service apache2 restart

User · Answer

Switch from PHP 5 6 to PHP 7 2 using   sudo a2dismod php5 6  amp  amp  sudo a2enmod php7 2  amp  amp  sudo service apache2 restart     Switch from PHP 7 2 to PHP 5 6 using   sudo a2dismod php7 2  amp  amp  sudo a2enmod php5 6  amp  amp  sudo service apache2 restart

User · Answer

From PHP 5 6    PHP 7 1    sudo a2dismod php5 6   sudo a2enmod php7 1   for old linux versions     sudo service apache2 restart   for more recent version    systemctl restart apache2

User · Answer

Interactive switching mode sudo update-alternatives --config php sudo update-alternatives --config phar sudo update-alternatives --config phar phar  Manual Switching From PHP 5 6   gt  PHP 7 1 Default PHP 5 6 is set on your system and you need to switch to PHP 7 1  Apache    sudo a2dismod php5 6   sudo a2enmod php7 1   sudo service apache2 restart  Command Line    sudo update-alternatives --set php  usr bin php7 1   sudo update-alternatives --set phar  usr bin phar7 1   sudo update-alternatives --set phar phar  usr bin phar phar7 1  From PHP 7 1   gt  PHP 5 6 Default PHP 7 1 is set on your system and you need to switch to PHP 5 6  Apache    sudo a2dismod php7 1   sudo a2enmod php5 6   sudo service apache2 restart  Command Line    sudo update-alternatives --set php  usr bin php5 6  Source

User · Answer

type this in your command line  should work for all ubuntu between 16 04  18 04 and 20 04    sudo update-alternatives --config php  and this is what you will get There are 4 choices for the alternative php  providing  usr bin php      Selection    Path             Priority   Status ------------------------------------------------------------   0             usr bin php7 2   72        auto mode   1             usr bin php5 6   56        manual mode   2             usr bin php7 0   70        manual mode   3             usr bin php7 1   71        manual mode   4             usr bin php7 2   72        manual mode Press  lt enter gt  to keep the current choice     or type selection number   Choose the appropriate version

User · Answer

When installing laravel on Ubuntu 18 04  be default PHP 7 3 0RC3 install selected  but laravel and symfony will not install properly complaining about missin php-xml and php-zip  even though they are installed  You need to switch to php 7 1  using the instructions above or    sudo update-alternatives --set php  usr bin php7 1   now  running laravel new blog  will proceed correctly

User · Answer

I made a bash script to switch between different PHP versions on Ubuntu   Hope it helps someone   Here s the script   save it in  usr local bin sphp sh  don t forget to add  x flag with command  sudo chmod  x  usr local bin sphp sh    x000D   x000D     bin bash x000D   x000D    Usage x000D  if      -ne 1    then x000D    echo  Usage  sphp  phpversion   x000D    echo  Example  sphp 7 2  x000D    exit 1 x000D  fi x000D   x000D  currentversion   php -r   error reporting 0   echo str replace          substr phpversion    0  3        x000D  newversion   1  x000D   x000D  majorOld   currentversion 0 1  x000D  minorOld   currentversion 1 1  x000D  majorNew   newversion 0 1  x000D  minorNew   newversion 2 1  x000D   x000D  if      -eq 0    then x000D    if      newversion         currentversion      then x000D      echo  PHP version    newversion   is already being used  x000D      exit 1 x000D    fi x000D   x000D    echo  PHP version   newversion  found  x000D    echo  Switching from  php  currentversion   to  php  newversion         x000D   x000D    printf  a2dismod php majorOld  minorOld       x000D    sudo a2dismod  php  majorOld    minorOld   x000D    printf   OK  and   x000D   x000D    printf  a2enmod php  newversion        x000D    sudo a2enmod  php  majorNew    minorNew   x000D    printf   OK  n  x000D   x000D    printf  update-alternatives       x000D    sudo update-alternatives --set php   usr bin php  majorNew    minorNew   x000D    printf   OK  n  x000D   x000D    sudo service apache2 restart x000D    printf   OK  apache2 restarted n  x000D  else x000D    echo  PHP version  majorNew  minorNew was not found   x000D    echo  Try   sudo apt install php   newversion    first   x000D    exit 1 x000D  fi x000D   x000D  echo  DONE   x000D   x000D   x000D

User · Answer

You could use these open source PHP Switch Scripts  which were designed specifically for use in Ubuntu 16 04 LTS   https   github com rapidwebltd php-switch-scripts  There is a setup sh script which installs all required dependencies for PHP 5 6  7 0  7 1  amp  7 2  Once this is complete  you can just run one of the following switch scripts to change the PHP CLI and Apache 2 module version     switch-to-php-5 6 sh   switch-to-php-7 0 sh   switch-to-php-7 1 sh   switch-to-php-7 2 sh

[php] Switch php versions on commandline ubuntu 16.04

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