'Installing Multiple PHP Versions on Debian 9'
Sometimes you need more than one PHP version on the same server. Maybe an old project still runs on 5.6, another one needs 7.2, and you want to test something on 7.4 before committing. Debian’s default repositories only ship one version, so you need a third-party source. The Sury repository is the standard way to get multiple PHP versions on Debian. Ondrej Surý has maintained it for years and it’s trusted by most people running PHP on Debian. ...