One of our clients server lives inside of tight security VPC.

Therefore, all of our EC2 web server must use HTTP_PROXY, HTTPS_PROXY.

When I try to use Concrete CMS (formally concrete5) to fetch the latest language files from remote server, I've got the curl timeout error and couldn't update the language.

So I need to set the proxy for PHP-FPM.

If you use Apache's PHP module or CLI, PHP will use server's environment settings.

However, for php-fpm you must also configure in php.d/www.conf.

Checked & tested with Amazon Linux 2 with PHP7.4 installed via amazon-linux-extra.

Condition

For example, you have your proxy set for both http and https.

http://10.0.0.1:8080

STEP 1. Set environment globally

Although php-fpm doesn't reference to server's global setting, you may still want to use PHP-CLI to run via SSH. So let's set it.

$ sudo vi /etc/environment
export http_proxy="http://10.0.0.1:8080"
export https_proxy="http://10.0.0.1:8080"
export HTTP_PROXY="http://10.0.0.1:8080"
export HTTPS_PROXY="http://10.0.0.1:8080"
export no_proxy="127.0.0.1,localhost"
export NO_PROXY=$no_proxy

Some middleware may use lowercase or capitol variable, so let's set both.

STEP 2. Set php-fpm environment

Set it to your php-fpm config.

$ sudo vi /etc/php-fpm.d/www.conf
# Add the following two lines anywhere
env[HTTP_PROXY] = 10.0.0.1:8080
env[HTTPS_PROXY] = 10.0.0.1:8080

STEP 3. Set php-fpm environment

Then, reload php-fpm service

sudo service php-fpm reload

STEP 4. Test run

I've prepared the sample PHP script.
Change $proxy variable to your proxy.
And save it to your webroot.

Get my sample PHP script here.
https://en.katzueno.com/2021/10/08/how-to-set-proxy-in-php-fpm/