[CentOS] Changing command line version of php for apache

Sun Feb 14 17:51:18 UTC 2021
Kenneth Porter <shiva at sewingwitch.com>

--On Saturday, February 13, 2021 9:59 PM -0500 H <agents at meddatainc.com> 

> But my question is also a more general one: short of ridding the system
> of the old, default php 5 binary, how should I configure a user without a
> shell such as apache to default to the newer php binary? As mentioned
> previously, apache itself runs the new php just fine (except for the imap
> issue above which could also be some other bug...).

CentOS 7 runs apache from systemd. Apache finds programs using the path. So 
you need to customize the systemd unit file for Apache to run it from 
within  a script that first prefixes the path with the location of your 
custom PHP binary. Software Collections provides a script for this.

See the systemd documentation for how to customize a unit file. You 
probably just need a "drop-in" in /etc/systemd/system that replaces the 
ExecStart value in httpd.service.

Another approach is to run php-fpm for your custom PHP (package 
rh-php72-php-fpm) and have Apache connect to this via the SetHandler 
directive. Use SetHandler instead of ProxyPass because the latter doesn't 
play well with FilesMatch.

        # send PHP requests to PHP 7.2 via php-fpm service
        <FilesMatch \.php$>
            SetHandler "proxy:fcgi://"

This will sandbox PHP into its own process.