I'm trying to switch the PHP version from 8.0 to 7.4. I run the command below without success:
sudo a2dismod php8.0
sudo a2enmod php7.4
sudo service apache2 restart
Then when I open a local webpage with the PHP info <?php phpinfo(); ?>, the PHP version is still 8.0.3 and not 7.4.
Note that when I execute the command sudo a2enmod php7.4 I get the following output:
dan@dan:~$ sudo a2enmod php7.4
Considering dependency mpm_prefork for php7.4:
Considering conflict mpm_event for mpm_prefork:
Considering conflict mpm_worker for mpm_prefork:
Enabling module mpm_prefork.
Considering conflict php5 for php7.4:
Enabling module php7.4.
To activate the new configuration, you need to run:
systemctl restart apache2
Maybe is that the source of the issue?
1 Answer
Do you have PHP5 installed on the system?
You can list all loaded Apache modules with apache2ctl -M:
$ sudo apache2ctl -M
Loaded Modules:
core_module (static)
so_module (static)
watchdog_module (static)
http_module (static)
log_config_module (static)
logio_module (static)
version_module (static)
unixd_module (static)
access_compat_module (shared)
alias_module (shared)
auth_basic_module (shared)
authn_core_module (shared)
authn_file_module (shared)
authz_core_module (shared)
authz_host_module (shared)
authz_user_module (shared)
autoindex_module (shared)
deflate_module (shared)
dir_module (shared)
env_module (shared)
filter_module (shared)
headers_module (shared)
mime_module (shared)
mpm_prefork_module (shared)
negotiation_module (shared)
php7_module (shared)
reqtimeout_module (shared)
rewrite_module (shared)
setenvif_module (shared)
status_module (shared)
If you have multiple php versions, use a2dismod to disable the ones you do not need. From there, you can use update-alternatives to change the default version of PHP:
sudo update-alternatives --set php /usr/bin/php7.4
Note: Be sure to change
php7.4to the version you wish to use.
Once this is done, restart the web server:
sudo service apache2 restart
This should give you what you need.
