Enabling MultiPHP on DirectAdmin

DirectAdmin supports running multiple PHP versions simultaneously, but MultiPHP is not enabled by default. DirectAdmin allows up to 4 PHP versions at a time, selectable per domain through the custombuild script.

Check if MultiPHP is already enabled

1. Log in to the DirectAdmin admin panel at https://your-compute-ip:2222.

2. Under the Admin tab, select Show All Users:

   

3. Click the + button next to a user and select Login as <username>:

   

4. Search for PHP Settings in the menu:

   

If the PHP Settings page shows a version dropdown, MultiPHP is already enabled. If not, continue below.

Installation

Step 1: Set PHP versions

Log in via SSH as root and navigate to the custombuild directory:

cd /usr/local/directadmin/custombuild
./build update

Configure your desired PHP versions (up to 4). All must use php-fpm mode for MultiPHP. For example, to set up PHP 8.1, 8.0, 7.4, and 7.3:

./build set php1_release 8.1
./build set php2_release 8.0
./build set php3_release 7.4
./build set php4_release 7.3
./build set php1_mode php-fpm
./build set php2_mode php-fpm
./build set php3_mode php-fpm
./build set php4_mode php-fpm

Step 2: Build the PHP versions

./build php n

This compiles all configured PHP versions and can take a significant amount of time. We recommend running this inside a screen session to prevent disconnection issues.

Step 3: Build rewrite_confs

./build rewrite_confs

MultiPHP is now installed. Users can select their PHP version from the PHP Settings page:

Select the desired PHP version from the dropdown and click Save.